ruby/resources/responses/methods/create/index.md 2026-06-09 06:34 UTC to 2026-06-10 15:48 UTC

Create a model response

responses.create(**kwargs) -> Response

post /responses

Creates a model response. Provide text or image inputs to generate text or JSON outputs. Have the model call your own custom code or use built-in tools like web search or file search to use your own data as input for the model's response.

Parameters

• background: bool

  Whether to run the model response in the background. Learn more.

• context_management: Array[ContextManagement{ type, compact_threshold}]

  Context management configuration for this request.

  • type: String

    The context management entry type. Currently only 'compaction' is supported.

  • compact_threshold: Integer

    Token threshold at which compaction should be triggered for this entry.

• conversation: String | ResponseConversationParam

  The conversation that this response belongs to. Items from this conversation are prepended to input_items for this response request. Input items and output items from this response are automatically added to this conversation after this response completes.

  • String = String

    The unique ID of the conversation.

  • class ResponseConversationParam

    The conversation that this response belongs to.

    • id: String

      The unique ID of the conversation.

• include: Array[ResponseIncludable]

  Specify additional output data to include in the model response. Currently supported values are:

  • web_search_call.action.sources: Include the sources of the web search tool call.

  • code_interpreter_call.outputs: Includes the outputs of python code execution in code interpreter tool call items.

  • computer_call_output.output.image_url: Include image urls from the computer call output.

  • file_search_call.results: Include the search results of the file search tool call.

  • message.input_image.image_url: Include image urls from the input message.

  • message.output_text.logprobs: Include logprobs with assistant messages.

  • reasoning.encrypted_content: Includes an encrypted version of reasoning tokens in reasoning item outputs. This enables reasoning items to be used in multi-turn conversations when using the Responses API statelessly (like when the store parameter is set to false, or when an organization is enrolled in the zero data retention program).

  • :"file_search_call.results"

  • :"web_search_call.results"

  • :"web_search_call.action.sources"

  • :"message.input_image.image_url"

  • :"computer_call_output.output.image_url"

  • :"code_interpreter_call.outputs"

  • :"reasoning.encrypted_content"

  • :"message.output_text.logprobs"

• input: String | ResponseInput

  Text, image, or file inputs to the model, used to generate a response.

  Learn more:

  • Text inputs and outputs

  • Image inputs

  • File inputs

  • Conversation state

  • Function calling

  • String = String

    A text input to the model, equivalent to a text input with the user role.

  • ResponseInput = Array[ResponseInputItem]

    A list of one or many input items to the model, containing different content types.

    • class EasyInputMessage

      A message input to the model with a role indicating instruction following hierarchy. Instructions given with the developer or system role take precedence over instructions given with the user role. Messages with the assistant role are presumed to have been generated by the model in previous interactions.

      • content: String | ResponseInputMessageContentList

        Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses.

        • String = String

          A text input to the model.

        • ResponseInputMessageContentList = Array[ResponseInputContent]

          A list of one or many input items to the model, containing different content types.

          • class ResponseInputText

            A text input to the model.

            • text: String

              The text input to the model.

            • type: :input_text

              The type of the input item. Always input_text.

              • :input_text

          • class ResponseInputImage

            An image input to the model. Learn about image inputs.

            • detail: :low | :high | :auto | :original

              The detail level of the image to be sent to the model. One of high, low, auto, or original. Defaults to auto.

              • :low

              • :high

              • :auto

              • :original

            • type: :input_image

              The type of the input item. Always input_image.

              • :input_image

            • file_id: String

              The ID of the file to be sent to the model.

            • image_url: String

              The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.

          • class ResponseInputFile

            A file input to the model.

            • type: :input_file

              The type of the input item. Always input_file.

              • :input_file

            • detail: :low | :high

              The detail level of the file to be sent to the model. Use low for the default rendering behavior, or high to render the file at higher quality. Defaults to low.

              • :low

              • :high

            • file_data: String

              The content of the file to be sent to the model.

            • file_id: String

              The ID of the file to be sent to the model.

            • file_url: String

              The URL of the file to be sent to the model.

            • filename: String

              The name of the file to be sent to the model.

      • role: :user | :assistant | :system | :developer

        The role of the message input. One of user, assistant, system, or developer.

        • :user

        • :assistant

        • :system

        • :developer

      • phase: :commentary | :final_answer

        Labels an assistant message as intermediate commentary (commentary) or the final answer (final_answer). For models like gpt-5.3-codex and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages.

        • :commentary

        • :final_answer

      • type: :message

        The type of the message input. Always message.

        • :message

    • class Message

      A message input to the model with a role indicating instruction following hierarchy. Instructions given with the developer or system role take precedence over instructions given with the user role.

      • content: ResponseInputMessageContentList

        A list of one or many input items to the model, containing different content types.

      • role: :user | :system | :developer

        The role of the message input. One of user, system, or developer.

        • :user

        • :system

        • :developer

      • status: :in_progress | :completed | :incomplete

        The status of item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

        • :in_progress

        • :completed

        • :incomplete

      • type: :message

        The type of the message input. Always set to message.

        • :message

    • class ResponseOutputMessage

      An output message from the model.

      • id: String

        The unique ID of the output message.

      • content: Array[ResponseOutputText | ResponseOutputRefusal]

        The content of the output message.

        • class ResponseOutputText

          A text output from the model.

          • annotations: Array[FileCitation{ file_id, filename, index, type} | URLCitation{ end_index, start_index, title, 2 more} | ContainerFileCitation{ container_id, end_index, file_id, 3 more} | FilePath{ file_id, index, type}]

            The annotations of the text output.

            • class FileCitation

              A citation to a file.

              • file_id: String

                The ID of the file.

              • filename: String

                The filename of the file cited.

              • index: Integer

                The index of the file in the list of files.

              • type: :file_citation

                The type of the file citation. Always file_citation.

                • :file_citation

            • class URLCitation

              A citation for a web resource used to generate a model response.

              • end_index: Integer

                The index of the last character of the URL citation in the message.

              • start_index: Integer

                The index of the first character of the URL citation in the message.

              • title: String

                The title of the web resource.

              • type: :url_citation

                The type of the URL citation. Always url_citation.

                • :url_citation

              • url: String

                The URL of the web resource.

            • class ContainerFileCitation

              A citation for a container file used to generate a model response.

              • container_id: String

                The ID of the container file.

              • end_index: Integer

                The index of the last character of the container file citation in the message.

              • file_id: String

                The ID of the file.

              • filename: String

                The filename of the container file cited.

              • start_index: Integer

                The index of the first character of the container file citation in the message.

              • type: :container_file_citation

                The type of the container file citation. Always container_file_citation.

                • :container_file_citation

            • class FilePath

              A path to a file.

              • file_id: String

                The ID of the file.

              • index: Integer

                The index of the file in the list of files.

              • type: :file_path

                The type of the file path. Always file_path.

                • :file_path

          • text: String

            The text output from the model.

          • type: :output_text

            The type of the output text. Always output_text.

            • :output_text

          • logprobs: Array[Logprob{ token, bytes, logprob, top_logprobs}]

            • token: String

            • bytes: Array[Integer]

            • logprob: Float

            • top_logprobs: Array[TopLogprob{ token, bytes, logprob}]

              • token: String

              • bytes: Array[Integer]

              • logprob: Float

        • class ResponseOutputRefusal

          A refusal from the model.

          • refusal: String

            The refusal explanation from the model.

          • type: :refusal

            The type of the refusal. Always refusal.

            • :refusal

      • role: :assistant

        The role of the output message. Always assistant.

        • :assistant

      • status: :in_progress | :completed | :incomplete

        The status of the message input. One of in_progress, completed, or incomplete. Populated when input items are returned via API.

        • :in_progress

        • :completed

        • :incomplete

      • type: :message

        The type of the output message. Always message.

        • :message

      • phase: :commentary | :final_answer

        Labels an assistant message as intermediate commentary (commentary) or the final answer (final_answer). For models like gpt-5.3-codex and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages.

        • :commentary

        • :final_answer

    • class ResponseFileSearchToolCall

      The results of a file search tool call. See the file search guide for more information.

      • id: String

        The unique ID of the file search tool call.

      • queries: Array[String]

        The queries used to search for files.

      • status: :in_progress | :searching | :completed | 2 more

        The status of the file search tool call. One of in_progress, searching, incomplete or failed,

        • :in_progress

        • :searching

        • :completed

        • :incomplete

        • :failed

      • type: :file_search_call

        The type of the file search tool call. Always file_search_call.

        • :file_search_call

      • results: Array[Result{ attributes, file_id, filename, 2 more}]

        The results of the file search tool call.

        • attributes: Hash[Symbol, String | Float | bool]

          Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers.

          • String = String

          • Float = Float

          • UnionMember2 = bool

        • file_id: String

          The unique ID of the file.

        • filename: String

          The name of the file.

        • score: Float

          The relevance score of the file - a value between 0 and 1.

        • text: String

          The text that was retrieved from the file.

    • class ResponseComputerToolCall

      A tool call to a computer use tool. See the computer use guide for more information.

      • id: String

        The unique ID of the computer call.

      • call_id: String

        An identifier used when responding to the tool call with output.

      • pending_safety_checks: Array[PendingSafetyCheck{ id, code, message}]

        The pending safety checks for the computer call.

        • id: String

          The ID of the pending safety check.

        • code: String

          The type of the pending safety check.

        • message: String

          Details about the pending safety check.

      • status: :in_progress | :completed | :incomplete

        The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

        • :in_progress

        • :completed

        • :incomplete

      • type: :computer_call

        The type of the computer call. Always computer_call.

        • :computer_call

      • action: Click{ button, type, x, 2 more} | DoubleClick{ keys, type, x, y_} | Drag{ path, type, keys} | 6 more

        A click action.

        • class Click

          A click action.

          • button: :left | :right | :wheel | 2 more

            Indicates which mouse button was pressed during the click. One of left, right, wheel, back, or forward.

            • :left

            • :right

            • :wheel

            • :back

            • :forward

          • type: :click

            Specifies the event type. For a click action, this property is always click.

            • :click

          • x: Integer

            The x-coordinate where the click occurred.

          • y_: Integer

            The y-coordinate where the click occurred.

          • keys: Array[String]

            The keys being held while clicking.

        • class DoubleClick

          A double click action.

          • keys: Array[String]

            The keys being held while double-clicking.

          • type: :double_click

            Specifies the event type. For a double click action, this property is always set to double_click.

            • :double_click

          • x: Integer

            The x-coordinate where the double click occurred.

          • y_: Integer

            The y-coordinate where the double click occurred.

        • class Drag

          A drag action.

          • path: Array[Path{ x, y_}]

            An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg

            [
              { x: 100, y: 200 },
              { x: 200, y: 300 }
            ]
            

            • x: Integer

              The x-coordinate.

            • y_: Integer

              The y-coordinate.

          • type: :drag

            Specifies the event type. For a drag action, this property is always set to drag.

            • :drag

          • keys: Array[String]

            The keys being held while dragging the mouse.

        • class Keypress

          A collection of keypresses the model would like to perform.

          • keys: Array[String]

            The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.

          • type: :keypress

            Specifies the event type. For a keypress action, this property is always set to keypress.

            • :keypress

        • class Move

          A mouse move action.

          • type: :move

            Specifies the event type. For a move action, this property is always set to move.

            • :move

          • x: Integer

            The x-coordinate to move to.

          • y_: Integer

            The y-coordinate to move to.

          • keys: Array[String]

            The keys being held while moving the mouse.

        • class Screenshot

          A screenshot action.

          • type: :screenshot

            Specifies the event type. For a screenshot action, this property is always set to screenshot.

            • :screenshot

        • class Scroll

          A scroll action.

          • scroll_x: Integer

            The horizontal scroll distance.

          • scroll_y: Integer

            The vertical scroll distance.

          • type: :scroll

            Specifies the event type. For a scroll action, this property is always set to scroll.

            • :scroll

          • x: Integer

            The x-coordinate where the scroll occurred.

          • y_: Integer

            The y-coordinate where the scroll occurred.

          • keys: Array[String]

            The keys being held while scrolling.

        • class Type

          An action to type in text.

          • text: String

            The text to type.

          • type: :type

            Specifies the event type. For a type action, this property is always set to type.

            • :type

        • class Wait

          A wait action.

          • type: :wait

            Specifies the event type. For a wait action, this property is always set to wait.

            • :wait

      • actions: ComputerActionList

        Flattened batched actions for computer_use. Each action includes an type discriminator and action-specific fields.

        • class Click

          A click action.

          • button: :left | :right | :wheel | 2 more

            Indicates which mouse button was pressed during the click. One of left, right, wheel, back, or forward.

            • :left

            • :right

            • :wheel

            • :back

            • :forward

          • type: :click

            Specifies the event type. For a click action, this property is always click.

            • :click

          • x: Integer

            The x-coordinate where the click occurred.

          • y_: Integer

            The y-coordinate where the click occurred.

          • keys: Array[String]

            The keys being held while clicking.

        • class DoubleClick

          A double click action.

          • keys: Array[String]

            The keys being held while double-clicking.

          • type: :double_click

            Specifies the event type. For a double click action, this property is always set to double_click.

            • :double_click

          • x: Integer

            The x-coordinate where the double click occurred.

          • y_: Integer

            The y-coordinate where the double click occurred.

        • class Drag

          A drag action.

          • path: Array[Path{ x, y_}]

            An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg

            [
              { x: 100, y: 200 },
              { x: 200, y: 300 }
            ]
            

            • x: Integer

              The x-coordinate.

            • y_: Integer

              The y-coordinate.

          • type: :drag

            Specifies the event type. For a drag action, this property is always set to drag.

            • :drag

          • keys: Array[String]

            The keys being held while dragging the mouse.

        • class Keypress

          A collection of keypresses the model would like to perform.

          • keys: Array[String]

            The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.

          • type: :keypress

            Specifies the event type. For a keypress action, this property is always set to keypress.

            • :keypress

        • class Move

          A mouse move action.

          • type: :move

            Specifies the event type. For a move action, this property is always set to move.

            • :move

          • x: Integer

            The x-coordinate to move to.

          • y_: Integer

            The y-coordinate to move to.

          • keys: Array[String]

            The keys being held while moving the mouse.

        • class Screenshot

          A screenshot action.

          • type: :screenshot

            Specifies the event type. For a screenshot action, this property is always set to screenshot.

            • :screenshot

        • class Scroll

          A scroll action.

          • scroll_x: Integer

            The horizontal scroll distance.

          • scroll_y: Integer

            The vertical scroll distance.

          • type: :scroll

            Specifies the event type. For a scroll action, this property is always set to scroll.

            • :scroll

          • x: Integer

            The x-coordinate where the scroll occurred.

          • y_: Integer

            The y-coordinate where the scroll occurred.

          • keys: Array[String]

            The keys being held while scrolling.

        • class Type

          An action to type in text.

          • text: String

            The text to type.

          • type: :type

            Specifies the event type. For a type action, this property is always set to type.

            • :type

        • class Wait

          A wait action.

          • type: :wait

            Specifies the event type. For a wait action, this property is always set to wait.

            • :wait

    • class ComputerCallOutput

      The output of a computer tool call.

      • call_id: String

        The ID of the computer tool call that produced the output.

      • output: ResponseComputerToolCallOutputScreenshot

        A computer screenshot image used with the computer use tool.

        • type: :computer_screenshot

          Specifies the event type. For a computer screenshot, this property is always set to computer_screenshot.

          • :computer_screenshot

        • file_id: String

          The identifier of an uploaded file that contains the screenshot.

        • image_url: String

          The URL of the screenshot image.

      • type: :computer_call_output

        The type of the computer tool call output. Always computer_call_output.

        • :computer_call_output

      • id: String

        The ID of the computer tool call output.

      • acknowledged_safety_checks: Array[AcknowledgedSafetyCheck{ id, code, message}]

        The safety checks reported by the API that have been acknowledged by the developer.

        • id: String

          The ID of the pending safety check.

        • code: String

          The type of the pending safety check.

        • message: String

          Details about the pending safety check.

      • status: :in_progress | :completed | :incomplete

        The status of the message input. One of in_progress, completed, or incomplete. Populated when input items are returned via API.

        • :in_progress

        • :completed

        • :incomplete

    • class ResponseFunctionWebSearch

      The results of a web search tool call. See the web search guide for more information.

      • id: String

        The unique ID of the web search tool call.

      • action: Search{ type, queries, query, sources} | OpenPage{ type, url} | FindInPage{ pattern, type, url}

        An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page).

        • class Search

          Action type "search" - Performs a web search query.

          • type: :search

            The action type.

            • :search

          • queries: Array[String]

            The search queries.

          • query: String

            The search query.

          • sources: Array[Source{ type, url}]

            The sources used in the search.

            • type: :url

              The type of source. Always url.

              • :url

            • url: String

              The URL of the source.

        • class OpenPage

          Action type "open_page" - Opens a specific URL from search results.

          • type: :open_page

            The action type.

            • :open_page

          • url: String

            The URL opened by the model.

        • class FindInPage

          Action type "find_in_page": Searches for a pattern within a loaded page.

          • pattern: String

            The pattern or text to search for within the page.

          • type: :find_in_page

            The action type.

            • :find_in_page

          • url: String

            The URL of the page searched for the pattern.

      • status: :in_progress | :searching | :completed | :failed

        The status of the web search tool call.

        • :in_progress

        • :searching

        • :completed

        • :failed

      • type: :web_search_call

        The type of the web search tool call. Always web_search_call.

        • :web_search_call

    • class ResponseFunctionToolCall

      A tool call to run a function. See the function calling guide for more information.

      • arguments: String

        A JSON string of the arguments to pass to the function.

      • call_id: String

        The unique ID of the function tool call generated by the model.

      • name: String

        The name of the function to run.

      • type: :function_call

        The type of the function tool call. Always function_call.

        • :function_call

      • id: String

        The unique ID of the function tool call.

      • namespace: String

        The namespace of the function to run.

      • status: :in_progress | :completed | :incomplete

        The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

        • :in_progress

        • :completed

        • :incomplete

    • class FunctionCallOutput

      The output of a function tool call.

      • call_id: String

        The unique ID of the function tool call generated by the model.

      • output: String | ResponseFunctionCallOutputItemList

        Text, image, or file output of the function tool call.

        • String = String

          A JSON string of the output of the function tool call.

        • ResponseFunctionCallOutputItemList = Array[ResponseFunctionCallOutputItem]

          An array of content outputs (text, image, file) for the function tool call.

          • class ResponseInputTextContent

            A text input to the model.

            • text: String

              The text input to the model.

            • type: :input_text

              The type of the input item. Always input_text.

              • :input_text

          • class ResponseInputImageContent

            An image input to the model. Learn about image inputs

            • type: :input_image

              The type of the input item. Always input_image.

              • :input_image

            • detail: :low | :high | :auto | :original

              The detail level of the image to be sent to the model. One of high, low, auto, or original. Defaults to auto.

              • :low

              • :high

              • :auto

              • :original

            • file_id: String

              The ID of the file to be sent to the model.

            • image_url: String

              The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.

          • class ResponseInputFileContent

            A file input to the model.

            • type: :input_file

              The type of the input item. Always input_file.

              • :input_file

            • detail: :low | :high

              The detail level of the file to be sent to the model. Use low for the default rendering behavior, or high to render the file at higher quality. Defaults to low.

              • :low

              • :high

            • file_data: String

              The base64-encoded data of the file to be sent to the model.

            • file_id: String

              The ID of the file to be sent to the model.

            • file_url: String

              The URL of the file to be sent to the model.

            • filename: String

              The name of the file to be sent to the model.

      • type: :function_call_output

        The type of the function tool call output. Always function_call_output.

        • :function_call_output

      • id: String

        The unique ID of the function tool call output. Populated when this item is returned via API.

      • status: :in_progress | :completed | :incomplete

        The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

        • :in_progress

        • :completed

        • :incomplete

    • class ToolSearchCall

      • arguments: untyped

        The arguments supplied to the tool search call.

      • type: :tool_search_call

        The item type. Always tool_search_call.

        • :tool_search_call

      • id: String

        The unique ID of this tool search call.

      • call_id: String

        The unique ID of the tool search call generated by the model.

      • execution: :server | :client

        Whether tool search was executed by the server or by the client.

        • :server

        • :client

      • status: :in_progress | :completed | :incomplete

        The status of the tool search call.

        • :in_progress

        • :completed

        • :incomplete

    • class ResponseToolSearchOutputItemParam

      • tools: Array[Tool]

        The loaded tool definitions returned by the tool search output.

        • class FunctionTool

          Defines a function in your own code the model can choose to call. Learn more about function calling.

          • name: String

            The name of the function to call.

          • parameters: Hash[Symbol, untyped]

            A JSON schema object describing the parameters of the function.

          • strict: bool

            Whether to enforce strict parameter validation. Default true.

          • type: :function

            The type of the function tool. Always function.

            • :function

          • defer_loading: bool

            Whether this function is deferred and loaded via tool search.

          • description: String

            A description of the function. Used by the model to determine whether or not to call the function.

        • class FileSearchTool

          A tool that searches for relevant content from uploaded files. Learn more about the file search tool.

          • type: :file_search

            The type of the file search tool. Always file_search.

            • :file_search

          • vector_store_ids: Array[String]

            The IDs of the vector stores to search.

          • filters: ComparisonFilter | CompoundFilter

            A filter to apply.

            • class ComparisonFilter

              A filter used to compare a specified attribute key to a given value using a defined comparison operation.

              • key: String

                The key to compare against the value.

              • type: :eq | :ne | :gt | 5 more

                Specifies the comparison operator: eq, ne, gt, gte, lt, lte, in, nin.

                • eq: equals

                • ne: not equal

                • gt: greater than

                • gte: greater than or equal

                • lt: less than

                • lte: less than or equal

                • in: in

                • nin: not in

                • :eq

                • :ne

                • :gt

                • :gte

                • :lt

                • :lte

                • :in

                • :nin

              • value: String | Float | bool | Array[String | Float]

                The value to compare against the attribute key; supports string, number, or boolean types.

                • String = String

                • Float = Float

                • UnionMember2 = bool

                • UnionMember3 = Array[String | Float]

                  • String = String

                  • Float = Float

            • class CompoundFilter

              Combine multiple filters using and or or.

              • filters: Array[ComparisonFilter | untyped]

                Array of filters to combine. Items can be ComparisonFilter or CompoundFilter.

                • class ComparisonFilter

                  A filter used to compare a specified attribute key to a given value using a defined comparison operation.

                • UnionMember1 = untyped

              • type: :and | :or

                Type of operation: and or or.

                • :and

                • :or

          • max_num_results: Integer

            The maximum number of results to return. This number should be between 1 and 50 inclusive.

          • ranking_options: RankingOptions{ hybrid_search, ranker, score_threshold}

            Ranking options for search.

            • hybrid_search: HybridSearch{ embedding_weight, text_weight}

              Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled.

              • embedding_weight: Float

                The weight of the embedding in the reciprocal ranking fusion.

              • text_weight: Float

                The weight of the text in the reciprocal ranking fusion.

            • ranker: :auto | :"default-2024-11-15"

              The ranker to use for the file search.

              • :auto

              • :"default-2024-11-15"

            • score_threshold: Float

              The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results.

        • class ComputerTool

          A tool that controls a virtual computer. Learn more about the computer tool.

          • type: :computer

            The type of the computer tool. Always computer.

            • :computer

        • class ComputerUsePreviewTool

          A tool that controls a virtual computer. Learn more about the computer tool.

          • display_height: Integer

            The height of the computer display.

          • display_width: Integer

            The width of the computer display.

          • environment: :windows | :mac | :linux | 2 more

            The type of computer environment to control.

            • :windows

            • :mac

            • :linux

            • :ubuntu

            • :browser

          • type: :computer_use_preview

            The type of the computer use tool. Always computer_use_preview.

            • :computer_use_preview

        • class WebSearchTool

          Search the Internet for sources related to the prompt. Learn more about the web search tool.

          • type: :web_search | :web_search_2025_08_26

            The type of the web search tool. One of web_search or web_search_2025_08_26.

            • :web_search

            • :web_search_2025_08_26

          • filters: Filters{ allowed_domains}

            Filters for the search.

            • allowed_domains: Array[String]

              Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well.

              Example: ["pubmed.ncbi.nlm.nih.gov"]

          • search_context_size: :low | :medium | :high

            High level guidance for the amount of context window space to use for the search. One of low, medium, or high. medium is the default.

            • :low

            • :medium

            • :high

          • user_location: UserLocation{ city, country, region, 2 more}

            The approximate location of the user.

            • city: String

              Free text input for the city of the user, e.g. San Francisco.

            • country: String

              The two-letter ISO country code of the user, e.g. US.

            • region: String

              Free text input for the region of the user, e.g. California.

            • timezone: String

              The IANA timezone of the user, e.g. America/Los_Angeles.

            • type: :approximate

              The type of location approximation. Always approximate.

              • :approximate

        • class Mcp

          Give the model access to additional tools via remote Model Context Protocol (MCP) servers. Learn more about MCP.

          • server_label: String

            A label for this MCP server, used to identify it in tool calls.

          • type: :mcp

            The type of the MCP tool. Always mcp.

            • :mcp

          • allowed_tools: Array[String] | McpToolFilter{ read_only, tool_names}

            List of allowed tool names or a filter object.

            • McpAllowedTools = Array[String]

              A string array of allowed tool names

            • class McpToolFilter

              A filter object to specify which tools are allowed.

              • read_only: bool

                Indicates whether or not a tool modifies data or is read-only. If an MCP server is annotated with readOnlyHint, it will match this filter.

              • tool_names: Array[String]

                List of allowed tool names.

          • authorization: String

            An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here.

          • connector_id: :connector_dropbox | :connector_gmail | :connector_googlecalendar | 5 more

            Identifier for service connectors, like those available in ChatGPT. One of server_url or connector_id must be provided. Learn more about service connectors here.

            Currently supported connector_id values are:

            • Dropbox: connector_dropbox

            • Gmail: connector_gmail

            • Google Calendar: connector_googlecalendar

            • Google Drive: connector_googledrive

            • Microsoft Teams: connector_microsoftteams

            • Outlook Calendar: connector_outlookcalendar

            • Outlook Email: connector_outlookemail

            • SharePoint: connector_sharepoint

            • :connector_dropbox

            • :connector_gmail

            • :connector_googlecalendar

            • :connector_googledrive

            • :connector_microsoftteams

            • :connector_outlookcalendar

            • :connector_outlookemail

            • :connector_sharepoint

          • defer_loading: bool

            Whether this MCP tool is deferred and discovered via tool search.

          • headers: Hash[Symbol, String]

            Optional HTTP headers to send to the MCP server. Use for authentication or other purposes.

          • require_approval: McpToolApprovalFilter{ always, never} | :always | :never

            Specify which of the MCP server's tools require approval.

            • class McpToolApprovalFilter

              Specify which of the MCP server's tools require approval. Can be always, never, or a filter object associated with tools that require approval.

              • always: Always{ read_only, tool_names}

                A filter object to specify which tools are allowed.

                • read_only: bool

                  Indicates whether or not a tool modifies data or is read-only. If an MCP server is annotated with readOnlyHint, it will match this filter.

                • tool_names: Array[String]

                  List of allowed tool names.

              • never: Never{ read_only, tool_names}

                A filter object to specify which tools are allowed.

                • read_only: bool

                  Indicates whether or not a tool modifies data or is read-only. If an MCP server is annotated with readOnlyHint, it will match this filter.

                • tool_names: Array[String]

                  List of allowed tool names.

            • McpToolApprovalSetting = :always | :never

              Specify a single approval policy for all tools. One of always or never. When set to always, all tools will require approval. When set to never, all tools will not require approval.

              • :always

              • :never

          • server_description: String

            Optional description of the MCP server, used to provide more context.

          • server_url: String

            The URL for the MCP server. One of server_url or connector_id must be provided.

        • class CodeInterpreter

          A tool that runs Python code to help generate a response to a prompt.

          • container: String | CodeInterpreterToolAuto{ type, file_ids, memory_limit, network_policy}

            The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional memory_limit setting.

            • String = String

              The container ID.

            • class CodeInterpreterToolAuto

              Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on.

              • type: :auto

                Always auto.

                • :auto

              • file_ids: Array[String]

                An optional list of uploaded files to make available to your code.

              • memory_limit: :"1g" | :"4g" | :"16g" | :"64g"

                The memory limit for the code interpreter container.

                • :"1g"

                • :"4g"

                • :"16g"

                • :"64g"

              • network_policy: ContainerNetworkPolicyDisabled | ContainerNetworkPolicyAllowlist

                Network access policy for the container.

                • class ContainerNetworkPolicyDisabled

                  • type: :disabled

                    Disable outbound network access. Always disabled.

                    • :disabled

                • class ContainerNetworkPolicyAllowlist

                  • allowed_domains: Array[String]

                    A list of allowed domains when type is allowlist.

                  • type: :allowlist

                    Allow outbound network access only to specified domains. Always allowlist.

                    • :allowlist

                  • domain_secrets: Array[ContainerNetworkPolicyDomainSecret]

                    Optional domain-scoped secrets for allowlisted domains.

                    • domain: String

                      The domain associated with the secret.

                    • name: String

                      The name of the secret to inject for the domain.

                    • value: String

                      The secret value to inject for the domain.

          • type: :code_interpreter

            The type of the code interpreter tool. Always code_interpreter.

            • :code_interpreter

        • class ImageGeneration

          A tool that generates images using the GPT image models.

          • type: :image_generation

            The type of the image generation tool. Always image_generation.

            • :image_generation

          • action: :generate | :edit | :auto

            Whether to generate a new image or edit an existing image. Default: auto.

            • :generate

            • :edit

            • :auto

          • background: :transparent | :opaque | :auto

            Allows to set transparency for the background of the generated image(s). This parameter is only supported for GPT image models that support transparent backgrounds. Must be one of transparent, opaque, or auto (default value). When auto is used, the model will automatically determine the best background for the image.

            gpt-image-2 and gpt-image-2-2026-04-21 do not support transparent backgrounds. Requests with background set to transparent will return an error for these models; use opaque or auto instead.

            If transparent, the output format needs to support transparency, so it should be set to either png (default value) or webp.

            • :transparent

            • :opaque

            • :auto

          • input_fidelity: :high | :low

            Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for gpt-image-1 and gpt-image-1.5 and later models, unsupported for gpt-image-1-mini. Supports high and low. Defaults to low.

            • :high

            • :low

          • input_image_mask: InputImageMask{ file_id, image_url}

            Optional mask for inpainting. Contains image_url (string, optional) and file_id (string, optional).

            • file_id: String

              File ID for the mask image.

            • image_url: String

              Base64-encoded mask image.

          • model: String | :"gpt-image-1" | :"gpt-image-1-mini" | :"gpt-image-2" | 3 more

            The image generation model to use. Default: gpt-image-1.

            • String = String

            • Model = :"gpt-image-1" | :"gpt-image-1-mini" | :"gpt-image-2" | 3 more

              The image generation model to use. Default: gpt-image-1.

              • :"gpt-image-1"

              • :"gpt-image-1-mini"

              • :"gpt-image-2"

              • :"gpt-image-2-2026-04-21"

              • :"gpt-image-1.5"

              • :"chatgpt-image-latest"

          • moderation: :auto | :low

            Moderation level for the generated image. Default: auto.

            • :auto

            • :low

          • output_compression: Integer

            Compression level for the output image. Default: 100.

          • output_format: :png | :webp | :jpeg

            The output format of the generated image. One of png, webp, or jpeg. Default: png.

            • :png

            • :webp

            • :jpeg

          • partial_images: Integer

            Number of partial images to generate in streaming mode, from 0 (default value) to 3.

          • quality: :low | :medium | :high | :auto

            The quality of the generated image. One of low, medium, high, or auto. Default: auto.

            • :low

            • :medium

            • :high

            • :auto

          • size: String | :"1024x1024" | :"1024x1536" | :"1536x1024" | :auto

            The size of the generated images. For gpt-image-2 and gpt-image-2-2026-04-21, arbitrary resolutions are supported as WIDTHxHEIGHT strings, for example 1536x864. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above 2560x1440 are experimental, and the maximum supported resolution is 3840x2160. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes 1024x1024, 1536x1024, and 1024x1536 are supported by the GPT image models; auto is supported for models that allow automatic sizing. For dall-e-2, use one of 256x256, 512x512, or 1024x1024. For dall-e-3, use one of 1024x1024, 1792x1024, or 1024x1792.

            • String = String

            • Size = :"1024x1024" | :"1024x1536" | :"1536x1024" | :auto

              The size of the generated images. For gpt-image-2 and gpt-image-2-2026-04-21, arbitrary resolutions are supported as WIDTHxHEIGHT strings, for example 1536x864. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above 2560x1440 are experimental, and the maximum supported resolution is 3840x2160. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes 1024x1024, 1536x1024, and 1024x1536 are supported by the GPT image models; auto is supported for models that allow automatic sizing. For dall-e-2, use one of 256x256, 512x512, or 1024x1024. For dall-e-3, use one of 1024x1024, 1792x1024, or 1024x1792.

              • :"1024x1024"

              • :"1024x1536"

              • :"1536x1024"

              • :auto

        • class LocalShell

          A tool that allows the model to execute shell commands in a local environment.

          • type: :local_shell

            The type of the local shell tool. Always local_shell.

            • :local_shell

        • class FunctionShellTool

          A tool that allows the model to execute shell commands.

          • type: :shell

            The type of the shell tool. Always shell.

            • :shell

          • environment: ContainerAuto | LocalEnvironment | ContainerReference

            • class ContainerAuto

              • type: :container_auto

                Automatically creates a container for this request

                • :container_auto

              • file_ids: Array[String]

                An optional list of uploaded files to make available to your code.

              • memory_limit: :"1g" | :"4g" | :"16g" | :"64g"

                The memory limit for the container.

                • :"1g"

                • :"4g"

                • :"16g"

                • :"64g"

              • network_policy: ContainerNetworkPolicyDisabled | ContainerNetworkPolicyAllowlist

                Network access policy for the container.

                • class ContainerNetworkPolicyDisabled

                • class ContainerNetworkPolicyAllowlist

              • skills: Array[SkillReference | InlineSkill]

                An optional list of skills referenced by id or inline data.

                • class SkillReference

                  • skill_id: String

                    The ID of the referenced skill.

                  • type: :skill_reference

                    References a skill created with the /v1/skills endpoint.

                    • :skill_reference

                  • version: String

                    Optional skill version. Use a positive integer or 'latest'. Omit for default.

                • class InlineSkill

                  • description: String

                    The description of the skill.

                  • name: String

                    The name of the skill.

                  • source: InlineSkillSource

                    Inline skill payload

                    • data: String

                      Base64-encoded skill zip bundle.

                    • media_type: :"application/zip"

                      The media type of the inline skill payload. Must be application/zip.

                      • :"application/zip"

                    • type: :base64

                      The type of the inline skill source. Must be base64.

                      • :base64

                  • type: :inline

                    Defines an inline skill for this request.

                    • :inline

            • class LocalEnvironment

              • type: :local

                Use a local computer environment.

                • :local

              • skills: Array[LocalSkill]

                An optional list of skills.

                • description: String

                  The description of the skill.

                • name: String

                  The name of the skill.

                • path: String

                  The path to the directory containing the skill.

            • class ContainerReference

              • container_id: String

                The ID of the referenced container.

              • type: :container_reference

                References a container created with the /v1/containers endpoint

                • :container_reference

        • class CustomTool

          A custom tool that processes input using a specified format. Learn more about custom tools

          • name: String

            The name of the custom tool, used to identify it in tool calls.

          • type: :custom

            The type of the custom tool. Always custom.

            • :custom

          • defer_loading: bool

            Whether this tool should be deferred and discovered via tool search.

          • description: String

            Optional description of the custom tool, used to provide more context.

          • format_: CustomToolInputFormat

            The input format for the custom tool. Default is unconstrained text.

            • class Text

              Unconstrained free-form text.

              • type: :text

                Unconstrained text format. Always text.

                • :text

            • class Grammar

              A grammar defined by the user.

              • definition: String

                The grammar definition.

              • syntax: :lark | :regex

                The syntax of the grammar definition. One of lark or regex.

                • :lark

                • :regex

              • type: :grammar

                Grammar format. Always grammar.

                • :grammar

        • class NamespaceTool

          Groups function/custom tools under a shared namespace.

          • description: String

            A description of the namespace shown to the model.

          • name: String

            The namespace name used in tool calls (for example, crm).

          • tools: Array[Function{ name, type, defer_loading, 3 more} | CustomTool]

            The function/custom tools available inside this namespace.

            • class Function

              • name: String

              • type: :function

                • :function

              • defer_loading: bool

                Whether this function should be deferred and discovered via tool search.

              • description: String

              • parameters: untyped

              • strict: bool

            • class CustomTool

              A custom tool that processes input using a specified format. Learn more about custom tools

          • type: :namespace

            The type of the tool. Always namespace.

            • :namespace

        • class ToolSearchTool

          Hosted or BYOT tool search configuration for deferred tools.

          • type: :tool_search

            The type of the tool. Always tool_search.

            • :tool_search

          • description: String

            Description shown to the model for a client-executed tool search tool.

          • execution: :server | :client

            Whether tool search is executed by the server or by the client.

            • :server

            • :client

          • parameters: untyped

            Parameter schema for a client-executed tool search tool.

        • class WebSearchPreviewTool

          This tool searches the web for relevant results to use in a response. Learn more about the web search tool.

          • type: :web_search_preview | :web_search_preview_2025_03_11

            The type of the web search tool. One of web_search_preview or web_search_preview_2025_03_11.

            • :web_search_preview

            • :web_search_preview_2025_03_11

          • search_content_types: Array[:text | :image]

            • :text

            • :image

          • search_context_size: :low | :medium | :high

            High level guidance for the amount of context window space to use for the search. One of low, medium, or high. medium is the default.

            • :low

            • :medium

            • :high

          • user_location: UserLocation{ type, city, country, 2 more}

            The user's location.

            • type: :approximate

              The type of location approximation. Always approximate.

              • :approximate

            • city: String

              Free text input for the city of the user, e.g. San Francisco.

            • country: String

              The two-letter ISO country code of the user, e.g. US.

            • region: String

              Free text input for the region of the user, e.g. California.

            • timezone: String

              The IANA timezone of the user, e.g. America/Los_Angeles.

        • class ApplyPatchTool

          Allows the assistant to create, delete, or update files using unified diffs.

          • type: :apply_patch

            The type of the tool. Always apply_patch.

            • :apply_patch

      • type: :tool_search_output

        The item type. Always tool_search_output.

        • :tool_search_output

      • id: String

        The unique ID of this tool search output.

      • call_id: String

        The unique ID of the tool search call generated by the model.

      • execution: :server | :client

        Whether tool search was executed by the server or by the client.

        • :server

        • :client

      • status: :in_progress | :completed | :incomplete

        The status of the tool search output.

        • :in_progress

        • :completed

        • :incomplete

    • class AdditionalTools

      • role: :developer

        The role that provided the additional tools. Only developer is supported.

        • :developer

      • tools: Array[Tool]

        A list of additional tools made available at this item.

        • class FunctionTool

          Defines a function in your own code the model can choose to call. Learn more about function calling.

        • class FileSearchTool

          A tool that searches for relevant content from uploaded files. Learn more about the file search tool.

        • class ComputerTool

          A tool that controls a virtual computer. Learn more about the computer tool.

        • class ComputerUsePreviewTool

          A tool that controls a virtual computer. Learn more about the computer tool.

        • class WebSearchTool

          Search the Internet for sources related to the prompt. Learn more about the web search tool.

        • class Mcp

          Give the model access to additional tools via remote Model Context Protocol (MCP) servers. Learn more about MCP.

        • class CodeInterpreter

          A tool that runs Python code to help generate a response to a prompt.

        • class ImageGeneration

          A tool that generates images using the GPT image models.

        • class LocalShell

          A tool that allows the model to execute shell commands in a local environment.

        • class FunctionShellTool

          A tool that allows the model to execute shell commands.

        • class CustomTool

          A custom tool that processes input using a specified format. Learn more about custom tools

        • class NamespaceTool

          Groups function/custom tools under a shared namespace.

        • class ToolSearchTool

          Hosted or BYOT tool search configuration for deferred tools.

        • class WebSearchPreviewTool

          This tool searches the web for relevant results to use in a response. Learn more about the web search tool.

        • class ApplyPatchTool

          Allows the assistant to create, delete, or update files using unified diffs.

      • type: :additional_tools

        The item type. Always additional_tools.

        • :additional_tools

      • id: String

        The unique ID of this additional tools item.

    • class ResponseReasoningItem

      A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your input to the Responses API for subsequent turns of a conversation if you are manually managing context.

      • id: String

        The unique identifier of the reasoning content.

      • summary: Array[Summary{ text, type}]

        Reasoning summary content.

        • text: String

          A summary of the reasoning output from the model so far.

        • type: :summary_text

          The type of the object. Always summary_text.

          • :summary_text

      • type: :reasoning

        The type of the object. Always reasoning.

        • :reasoning

      • content: Array[Content{ text, type}]

        Reasoning text content.

        • text: String

          The reasoning text from the model.

        • type: :reasoning_text

          The type of the reasoning text. Always reasoning_text.

          • :reasoning_text

      • encrypted_content: String

        The encrypted content of the reasoning item - populated when a response is generated with reasoning.encrypted_content in the include parameter.

      • status: :in_progress | :completed | :incomplete

        The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

        • :in_progress

        • :completed

        • :incomplete

    • class ResponseCompactionItemParam

      A compaction item generated by the v1/responses/compact API.

      • encrypted_content: String

        The encrypted content of the compaction summary.

      • type: :compaction

        The type of the item. Always compaction.

        • :compaction

      • id: String

        The ID of the compaction item.

    • class ImageGenerationCall

      An image generation request made by the model.

      • id: String

        The unique ID of the image generation call.

      • result: String

        The generated image encoded in base64.

      • status: :in_progress | :completed | :generating | :failed

        The status of the image generation call.

        • :in_progress

        • :completed

        • :generating

        • :failed

      • type: :image_generation_call

        The type of the image generation call. Always image_generation_call.

        • :image_generation_call

    • class ResponseCodeInterpreterToolCall

      A tool call to run code.

      • id: String

        The unique ID of the code interpreter tool call.

      • code: String

        The code to run, or null if not available.

      • container_id: String

        The ID of the container used to run the code.

      • outputs: Array[Logs{ logs, type} | Image{ type, url}]

        The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available.

        • class Logs

          The logs output from the code interpreter.

          • logs: String

            The logs output from the code interpreter.

          • type: :logs

            The type of the output. Always logs.

            • :logs

        • class Image

          The image output from the code interpreter.

          • type: :image

            The type of the output. Always image.

            • :image

          • url: String

            The URL of the image output from the code interpreter.

      • status: :in_progress | :completed | :incomplete | 2 more

        The status of the code interpreter tool call. Valid values are in_progress, completed, incomplete, interpreting, and failed.

        • :in_progress

        • :completed

        • :incomplete

        • :interpreting

        • :failed

      • type: :code_interpreter_call

        The type of the code interpreter tool call. Always code_interpreter_call.

        • :code_interpreter_call

    • class LocalShellCall

      A tool call to run a command on the local shell.

      • id: String

        The unique ID of the local shell call.

      • action: Action{ command, env, type, 3 more}

        Execute a shell command on the server.

        • command: Array[String]

          The command to run.

        • env: Hash[Symbol, String]

          Environment variables to set for the command.

        • type: :exec

          The type of the local shell action. Always exec.

          • :exec

        • timeout_ms: Integer

          Optional timeout in milliseconds for the command.

        • user: String

          Optional user to run the command as.

        • working_directory: String

          Optional working directory to run the command in.

      • call_id: String

        The unique ID of the local shell tool call generated by the model.

      • status: :in_progress | :completed | :incomplete

        The status of the local shell call.

        • :in_progress

        • :completed

        • :incomplete

      • type: :local_shell_call

        The type of the local shell call. Always local_shell_call.

        • :local_shell_call

    • class LocalShellCallOutput

      The output of a local shell tool call.

      • id: String

        The unique ID of the local shell tool call generated by the model.

      • output: String

        A JSON string of the output of the local shell tool call.

      • type: :local_shell_call_output

        The type of the local shell tool call output. Always local_shell_call_output.

        • :local_shell_call_output

      • status: :in_progress | :completed | :incomplete

        The status of the item. One of in_progress, completed, or incomplete.

        • :in_progress

        • :completed

        • :incomplete

    • class ShellCall

      A tool representing a request to execute one or more shell commands.

      • action: Action{ commands, max_output_length, timeout_ms}

        The shell commands and limits that describe how to run the tool call.

        • commands: Array[String]

          Ordered shell commands for the execution environment to run.

        • max_output_length: Integer

          Maximum number of UTF-8 characters to capture from combined stdout and stderr output.

        • timeout_ms: Integer

          Maximum wall-clock time in milliseconds to allow the shell commands to run.

      • call_id: String

        The unique ID of the shell tool call generated by the model.

      • type: :shell_call

        The type of the item. Always shell_call.

        • :shell_call

      • id: String

        The unique ID of the shell tool call. Populated when this item is returned via API.

      • environment: LocalEnvironment | ContainerReference

        The environment to execute the shell commands in.

        • class LocalEnvironment

        • class ContainerReference

      • status: :in_progress | :completed | :incomplete

        The status of the shell call. One of in_progress, completed, or incomplete.

        • :in_progress

        • :completed

        • :incomplete

    • class ShellCallOutput

      The streamed output items emitted by a shell tool call.

      • call_id: String

        The unique ID of the shell tool call generated by the model.

      • output: Array[ResponseFunctionShellCallOutputContent]

        Captured chunks of stdout and stderr output, along with their associated outcomes.

        • outcome: Timeout{ type} | Exit{ exit_code, type}

          The exit or timeout outcome associated with this shell call.

          • class Timeout

            Indicates that the shell call exceeded its configured time limit.

            • type: :timeout

              The outcome type. Always timeout.

              • :timeout

          • class Exit

            Indicates that the shell commands finished and returned an exit code.

            • exit_code: Integer

              The exit code returned by the shell process.

            • type: :exit

              The outcome type. Always exit.

              • :exit

        • stderr: String

          Captured stderr output for the shell call.

        • stdout: String

          Captured stdout output for the shell call.

      • type: :shell_call_output

        The type of the item. Always shell_call_output.

        • :shell_call_output

      • id: String

        The unique ID of the shell tool call output. Populated when this item is returned via API.

      • max_output_length: Integer

        The maximum number of UTF-8 characters captured for this shell call's combined output.

      • status: :in_progress | :completed | :incomplete

        The status of the shell call output.

        • :in_progress

        • :completed

        • :incomplete

    • class ApplyPatchCall

      A tool call representing a request to create, delete, or update files using diff patches.

      • call_id: String

        The unique ID of the apply patch tool call generated by the model.

      • operation: CreateFile{ diff, path, type} | DeleteFile{ path, type} | UpdateFile{ diff, path, type}

        The specific create, delete, or update instruction for the apply_patch tool call.

        • class CreateFile

          Instruction for creating a new file via the apply_patch tool.

          • diff: String

            Unified diff content to apply when creating the file.

          • path: String

            Path of the file to create relative to the workspace root.

          • type: :create_file

            The operation type. Always create_file.

            • :create_file

        • class DeleteFile

          Instruction for deleting an existing file via the apply_patch tool.

          • path: String

            Path of the file to delete relative to the workspace root.

          • type: :delete_file

            The operation type. Always delete_file.

            • :delete_file

        • class UpdateFile

          Instruction for updating an existing file via the apply_patch tool.

          • diff: String

            Unified diff content to apply to the existing file.

          • path: String

            Path of the file to update relative to the workspace root.

          • type: :update_file

            The operation type. Always update_file.

            • :update_file

      • status: :in_progress | :completed

        The status of the apply patch tool call. One of in_progress or completed.

        • :in_progress

        • :completed

      • type: :apply_patch_call

        The type of the item. Always apply_patch_call.

        • :apply_patch_call

      • id: String

        The unique ID of the apply patch tool call. Populated when this item is returned via API.

    • class ApplyPatchCallOutput

      The streamed output emitted by an apply patch tool call.

      • call_id: String

        The unique ID of the apply patch tool call generated by the model.

      • status: :completed | :failed

        The status of the apply patch tool call output. One of completed or failed.

        • :completed

        • :failed

      • type: :apply_patch_call_output

        The type of the item. Always apply_patch_call_output.

        • :apply_patch_call_output

      • id: String

        The unique ID of the apply patch tool call output. Populated when this item is returned via API.

      • output: String

        Optional human-readable log text from the apply patch tool (e.g., patch results or errors).

    • class McpListTools

      A list of tools available on an MCP server.

      • id: String

        The unique ID of the list.

      • server_label: String

        The label of the MCP server.

      • tools: Array[Tool{ input_schema, name, annotations, description}]

        The tools available on the server.

        • input_schema: untyped

          The JSON schema describing the tool's input.

        • name: String

          The name of the tool.

        • annotations: untyped

          Additional annotations about the tool.

        • description: String

          The description of the tool.

      • type: :mcp_list_tools

        The type of the item. Always mcp_list_tools.

        • :mcp_list_tools

      • error: String

        Error message if the server could not list tools.

    • class McpApprovalRequest

      A request for human approval of a tool invocation.

      • id: String

        The unique ID of the approval request.

      • arguments: String

        A JSON string of arguments for the tool.

      • name: String

        The name of the tool to run.

      • server_label: String

        The label of the MCP server making the request.

      • type: :mcp_approval_request

        The type of the item. Always mcp_approval_request.

        • :mcp_approval_request

    • class McpApprovalResponse

      A response to an MCP approval request.

      • approval_request_id: String

        The ID of the approval request being answered.

      • approve: bool

        Whether the request was approved.

      • type: :mcp_approval_response

        The type of the item. Always mcp_approval_response.

        • :mcp_approval_response

      • id: String

        The unique ID of the approval response

      • reason: String

        Optional reason for the decision.

    • class McpCall

      An invocation of a tool on an MCP server.

      • id: String

        The unique ID of the tool call.

      • arguments: String

        A JSON string of the arguments passed to the tool.

      • name: String

        The name of the tool that was run.

      • server_label: String

        The label of the MCP server running the tool.

      • type: :mcp_call

        The type of the item. Always mcp_call.

        • :mcp_call

      • approval_request_id: String

        Unique identifier for the MCP tool call approval request. Include this value in a subsequent mcp_approval_response input to approve or reject the corresponding tool call.

      • error: String

        The error from the tool call, if any.

      • output: String

        The output from the tool call.

      • status: :in_progress | :completed | :incomplete | 2 more

        The status of the tool call. One of in_progress, completed, incomplete, calling, or failed.

        • :in_progress

        • :completed

        • :incomplete

        • :calling

        • :failed

    • class ResponseCustomToolCallOutput

      The output of a custom tool call from your code, being sent back to the model.

      • call_id: String

        The call ID, used to map this custom tool call output to a custom tool call.

      • output: String | Array[ResponseInputText | ResponseInputImage | ResponseInputFile]

        The output from the custom tool call generated by your code. Can be a string or an list of output content.

        • String = String

          A string of the output of the custom tool call.

        • OutputContentList = Array[ResponseInputText | ResponseInputImage | ResponseInputFile]

          Text, image, or file output of the custom tool call.

          • class ResponseInputText

            A text input to the model.

          • class ResponseInputImage

            An image input to the model. Learn about image inputs.

          • class ResponseInputFile

            A file input to the model.

      • type: :custom_tool_call_output

        The type of the custom tool call output. Always custom_tool_call_output.

        • :custom_tool_call_output

      • id: String

        The unique ID of the custom tool call output in the OpenAI platform.

    • class ResponseCustomToolCall

      A call to a custom tool created by the model.

      • call_id: String

        An identifier used to map this custom tool call to a tool call output.

      • input: String

        The input for the custom tool call generated by the model.

      • name: String

        The name of the custom tool being called.

      • type: :custom_tool_call

        The type of the custom tool call. Always custom_tool_call.

        • :custom_tool_call

      • id: String

        The unique ID of the custom tool call in the OpenAI platform.

      • namespace: String

        The namespace of the custom tool being called.

    • class CompactionTrigger

      Compacts the current context. Must be the final input item.

      • type: :compaction_trigger

        The type of the item. Always compaction_trigger.

        • :compaction_trigger

    • class ItemReference

      An internal identifier for an item to reference.

      • id: String

        The ID of the item to reference.

      • type: :item_reference

        The type of item to reference. Always item_reference.

        • :item_reference

• instructions: String

  A system (or developer) message inserted into the model's context.

  When using along with previous_response_id, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses.

• max_output_tokens: Integer

  An upper bound for the number of tokens that can be generated for a response, including visible output tokens and reasoning tokens.

• max_tool_calls: Integer

  The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored.

• metadata: Metadata

  Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard.

  Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters.

• model: ResponsesModel

  Model ID used to generate the response, like gpt-4o or o3. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the model guide to browse and compare available models.

  • String = String

  • ChatModel = :"gpt-5.4" | :"gpt-5.4-mini" | :"gpt-5.4-nano" | 75 more

    • :"gpt-5.4"

    • :"gpt-5.4-mini"

    • :"gpt-5.4-nano"

    • :"gpt-5.4-mini-2026-03-17"

    • :"gpt-5.4-nano-2026-03-17"

    • :"gpt-5.3-chat-latest"

    • :"gpt-5.2"

    • :"gpt-5.2-2025-12-11"

    • :"gpt-5.2-chat-latest"

    • :"gpt-5.2-pro"

    • :"gpt-5.2-pro-2025-12-11"

    • :"gpt-5.1"

    • :"gpt-5.1-2025-11-13"

    • :"gpt-5.1-codex"

    • :"gpt-5.1-mini"

    • :"gpt-5.1-chat-latest"

    • :"gpt-5"

    • :"gpt-5-mini"

    • :"gpt-5-nano"

    • :"gpt-5-2025-08-07"

    • :"gpt-5-mini-2025-08-07"

    • :"gpt-5-nano-2025-08-07"

    • :"gpt-5-chat-latest"

    • :"gpt-4.1"

    • :"gpt-4.1-mini"

    • :"gpt-4.1-nano"

    • :"gpt-4.1-2025-04-14"

    • :"gpt-4.1-mini-2025-04-14"

    • :"gpt-4.1-nano-2025-04-14"

    • :"o4-mini"

    • :"o4-mini-2025-04-16"

    • :o3

    • :"o3-2025-04-16"

    • :"o3-mini"

    • :"o3-mini-2025-01-31"

    • :o1

    • :"o1-2024-12-17"

    • :"o1-preview"

    • :"o1-preview-2024-09-12"

    • :"o1-mini"

    • :"o1-mini-2024-09-12"

    • :"gpt-4o"

    • :"gpt-4o-2024-11-20"

    • :"gpt-4o-2024-08-06"

    • :"gpt-4o-2024-05-13"

    • :"gpt-4o-audio-preview"

    • :"gpt-4o-audio-preview-2024-10-01"

    • :"gpt-4o-audio-preview-2024-12-17"

    • :"gpt-4o-audio-preview-2025-06-03"

    • :"gpt-4o-mini-audio-preview"

    • :"gpt-4o-mini-audio-preview-2024-12-17"

    • :"gpt-4o-search-preview"

    • :"gpt-4o-mini-search-preview"

    • :"gpt-4o-search-preview-2025-03-11"

    • :"gpt-4o-mini-search-preview-2025-03-11"

    • :"chatgpt-4o-latest"

    • :"codex-mini-latest"

    • :"gpt-4o-mini"

    • :"gpt-4o-mini-2024-07-18"

    • :"gpt-4-turbo"

    • :"gpt-4-turbo-2024-04-09"

    • :"gpt-4-0125-preview"

    • :"gpt-4-turbo-preview"

    • :"gpt-4-1106-preview"

    • :"gpt-4-vision-preview"

    • :"gpt-4"

    • :"gpt-4-0314"

    • :"gpt-4-0613"

    • :"gpt-4-32k"

    • :"gpt-4-32k-0314"

    • :"gpt-4-32k-0613"

    • :"gpt-3.5-turbo"

    • :"gpt-3.5-turbo-16k"

    • :"gpt-3.5-turbo-0301"

    • :"gpt-3.5-turbo-0613"

    • :"gpt-3.5-turbo-1106"

    • :"gpt-3.5-turbo-0125"

    • :"gpt-3.5-turbo-16k-0613"

  • ResponsesOnlyModel = :"o1-pro" | :"o1-pro-2025-03-19" | :"o3-pro" | 11 more

    • :"o1-pro"

    • :"o1-pro-2025-03-19"

    • :"o3-pro"

    • :"o3-pro-2025-06-10"

    • :"o3-deep-research"

    • :"o3-deep-research-2025-06-26"

    • :"o4-mini-deep-research"

    • :"o4-mini-deep-research-2025-06-26"

    • :"computer-use-preview"

    • :"computer-use-preview-2025-03-11"

    • :"gpt-5-codex"

    • :"gpt-5-pro"

    • :"gpt-5-pro-2025-10-06"

    • :"gpt-5.1-codex-max"

• moderation: Moderation{ model}

  Configuration for running moderation on the input and output of this response.

  • model: String

    The moderation model to use for moderated completions, e.g. 'omni-moderation-latest'.

• parallel_tool_calls: bool

  Whether to allow the model to run tool calls in parallel.

• previous_response_id: String

  The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about conversation state. Cannot be used in conjunction with conversation.

• prompt: ResponsePrompt

  Reference to a prompt template and its variables. Learn more.

  • id: String

    The unique identifier of the prompt template to use.

  • variables: Hash[Symbol, String | ResponseInputText | ResponseInputImage | ResponseInputFile]

    Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files.

    • String = String

    • class ResponseInputText

      A text input to the model.

    • class ResponseInputImage

      An image input to the model. Learn about image inputs.

    • class ResponseInputFile

      A file input to the model.

  • version: String

    Optional version of the prompt template.

• prompt_cache_key: String

  Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the user field. Learn more.

• prompt_cache_retention: :in_memory | :"24h"

  The retention policy for the prompt cache. Set to 24h to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. Learn more. For gpt-5.5, gpt-5.5-pro, and future models, only 24h is supported.

  For older models that support both in_memory and 24h, the default depends on your organization's data retention policy:

  • Organizations without ZDR enabled default to 24h.

  • Organizations with ZDR enabled default to in_memory when prompt_cache_retention is not specified.

  • :in_memory

  • :"24h"

• reasoning: Reasoning

  gpt-5 and o-series models only

  Configuration options for reasoning models.

  • effort: ReasoningEffort

    Constrains effort on reasoning for reasoning models. Currently supported values are none, minimal, low, medium, high, and xhigh. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response.

    • gpt-5.1 defaults to none, which does not perform reasoning. The supported reasoning values for gpt-5.1 are none, low, medium, and high. Tool calls are supported for all reasoning values in gpt-5.1.

    • All models before gpt-5.1 default to medium reasoning effort, and do not support none.

    • The gpt-5-pro model defaults to (and only supports) high reasoning effort.

    • xhigh is supported for all models after gpt-5.1-codex-max.

    • :none

    • :minimal

    • :low

    • :medium

    • :high

    • :xhigh

  • generate_summary: :auto | :concise | :detailed

    Deprecated: use summary instead.

    A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of auto, concise, or detailed.

    • :auto

    • :concise

    • :detailed

  • summary: :auto | :concise | :detailed

    A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of auto, concise, or detailed.

    concise is supported for computer-use-preview models and all reasoning models after gpt-5.

    • :auto

    • :concise

    • :detailed

• safety_identifier: String

  A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. Learn more.

• service_tier: :auto | :default | :flex | 2 more

  Specifies the processing type used for serving the request.

  • If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'.
  • If set to 'default', then the request will be processed with the standard pricing and performance for the selected model.
  • If set to 'flex' or 'priority', then the request will be processed with the corresponding service tier.
  • When not set, the default behavior is 'auto'.

  When the service_tier parameter is set, the response body will include the service_tier value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter.

  • :auto

  • :default

  • :flex

  • :scale

  • :priority

• store: bool

  Whether to store the generated model response for later retrieval via API.

• stream: bool

  If set to true, the model response data will be streamed to the client as it is generated using server-sent events. See the Streaming section below for more information.

• stream_options: StreamOptions{ include_obfuscation}

  Options for streaming responses. Only set this when you set stream: true.

  • include_obfuscation: bool

    When true, stream obfuscation will be enabled. Stream obfuscation adds random characters to an obfuscation field on streaming delta events to normalize payload sizes as a mitigation to certain side-channel attacks. These obfuscation fields are included by default, but add a small amount of overhead to the data stream. You can set include_obfuscation to false to optimize for bandwidth if you trust the network links between your application and the OpenAI API.

• temperature: Float

  What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or top_p but not both.

• text: ResponseTextConfig

  Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more:

  • Text inputs and outputs

  • Structured Outputs

  • format_: ResponseFormatTextConfig

    An object specifying the format that the model must output.

    Configuring { "type": "json_schema" } enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the Structured Outputs guide.

    The default format is { "type": "text" } with no additional options.

    Not recommended for gpt-4o and newer models:

    Setting to { "type": "json_object" } enables the older JSON mode, which ensures the message the model generates is valid JSON. Using json_schema is preferred for models that support it.

    • class ResponseFormatText

      Default response format. Used to generate text responses.

      • type: :text

        The type of response format being defined. Always text.

        • :text

    • class ResponseFormatTextJSONSchemaConfig

      JSON Schema response format. Used to generate structured JSON responses. Learn more about Structured Outputs.

      • name: String

        The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64.

      • schema: Hash[Symbol, untyped]

        The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas here.

      • type: :json_schema

        The type of response format being defined. Always json_schema.

        • :json_schema

      • description: String

        A description of what the response format is for, used by the model to determine how to respond in the format.

      • strict: bool

        Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the schema field. Only a subset of JSON Schema is supported when strict is true. To learn more, read the Structured Outputs guide.

    • class ResponseFormatJSONObject

      JSON object response format. An older method of generating JSON responses. Using json_schema is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so.

      • type: :json_object

        The type of response format being defined. Always json_object.

        • :json_object

  • verbosity: :low | :medium | :high

    Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are low, medium, and high.

    • :low

    • :medium

    • :high

• tool_choice: ToolChoiceOptions | ToolChoiceAllowed | ToolChoiceTypes | 5 more

  How the model should select which tool (or tools) to use when generating a response. See the tools parameter to see how to specify which tools the model can call.

  • ToolChoiceOptions = :none | :auto | :required

    Controls which (if any) tool is called by the model.

    none means the model will not call any tool and instead generates a message.

    auto means the model can pick between generating a message or calling one or more tools.

    required means the model must call one or more tools.

    • :none

    • :auto

    • :required

  • class ToolChoiceAllowed

    Constrains the tools available to the model to a pre-defined set.

    • mode: :auto | :required

      Constrains the tools available to the model to a pre-defined set.

      auto allows the model to pick from among the allowed tools and generate a message.

      required requires the model to call one or more of the allowed tools.

      • :auto

      • :required

    • tools: Array[Hash[Symbol, untyped]]

      A list of tool definitions that the model should be allowed to call.

      For the Responses API, the list of tool definitions might look like:

      [
        { "type": "function", "name": "get_weather" },
        { "type": "mcp", "server_label": "deepwiki" },
        { "type": "image_generation" }
      ]
      

    • type: :allowed_tools

      Allowed tool configuration type. Always allowed_tools.

      • :allowed_tools

  • class ToolChoiceTypes

    Indicates that the model should use a built-in tool to generate a response. Learn more about built-in tools.

    • type: :file_search | :web_search_preview | :computer | 5 more

      The type of hosted tool the model should to use. Learn more about built-in tools.

      Allowed values are:

      • file_search

      • web_search_preview

      • computer

      • computer_use_preview

      • computer_use

      • code_interpreter

      • image_generation

      • :file_search

      • :web_search_preview

      • :computer

      • :computer_use_preview

      • :computer_use

      • :web_search_preview_2025_03_11

      • :image_generation

      • :code_interpreter

  • class ToolChoiceFunction

    Use this option to force the model to call a specific function.

    • name: String

      The name of the function to call.

    • type: :function

      For function calling, the type is always function.

      • :function

  • class ToolChoiceMcp

    Use this option to force the model to call a specific tool on a remote MCP server.

    • server_label: String

      The label of the MCP server to use.

    • type: :mcp

      For MCP tools, the type is always mcp.

      • :mcp

    • name: String

      The name of the tool to call on the server.

  • class ToolChoiceCustom

    Use this option to force the model to call a specific custom tool.

    • name: String

      The name of the custom tool to call.

    • type: :custom

      For custom tool calling, the type is always custom.

      • :custom

  • class ToolChoiceApplyPatch

    Forces the model to call the apply_patch tool when executing a tool call.

    • type: :apply_patch

      The tool to call. Always apply_patch.

      • :apply_patch

  • class ToolChoiceShell

    Forces the model to call the shell tool when a tool call is required.

    • type: :shell

      The tool to call. Always shell.

      • :shell

• tools: Array[Tool]

  An array of tools the model may call while generating a response. You can specify which tool to use by setting the tool_choice parameter.

  We support the following categories of tools:

  • Built-in tools: Tools that are provided by OpenAI that extend the model's capabilities, like web search or file search. Learn more about built-in tools.

  • MCP Tools: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about MCP Tools.

  • Function calls (custom tools): Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about function calling. You can also use custom tools to call your own code.

  • class FunctionTool

    Defines a function in your own code the model can choose to call. Learn more about function calling.

  • class FileSearchTool

    A tool that searches for relevant content from uploaded files. Learn more about the file search tool.

  • class ComputerTool

    A tool that controls a virtual computer. Learn more about the computer tool.

  • class ComputerUsePreviewTool

    A tool that controls a virtual computer. Learn more about the computer tool.

  • class WebSearchTool

    Search the Internet for sources related to the prompt. Learn more about the web search tool.

  • class Mcp

    Give the model access to additional tools via remote Model Context Protocol (MCP) servers. Learn more about MCP.

  • class CodeInterpreter

    A tool that runs Python code to help generate a response to a prompt.

  • class ImageGeneration

    A tool that generates images using the GPT image models.

  • class LocalShell

    A tool that allows the model to execute shell commands in a local environment.

  • class FunctionShellTool

    A tool that allows the model to execute shell commands.

  • class CustomTool

    A custom tool that processes input using a specified format. Learn more about custom tools

  • class NamespaceTool

    Groups function/custom tools under a shared namespace.

  • class ToolSearchTool

    Hosted or BYOT tool search configuration for deferred tools.

  • class WebSearchPreviewTool

    This tool searches the web for relevant results to use in a response. Learn more about the web search tool.

  • class ApplyPatchTool

    Allows the assistant to create, delete, or update files using unified diffs.

• top_logprobs: Integer

  An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested.

• top_p: Float

  An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered.

  We generally recommend altering this or temperature but not both.

• truncation: :auto | :disabled

  The truncation strategy to use for the model response.

  • auto: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation.

  • disabled (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error.

  • :auto

  • :disabled

• user: String

  This field is being replaced by safety_identifier and prompt_cache_key. Use prompt_cache_key instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. Learn more.

Returns

• class Response

  • id: String

    Unique identifier for this Response.

  • created_at: Float

    Unix timestamp (in seconds) of when this Response was created.

  • error: ResponseError

    An error object returned when the model fails to generate a Response.

    • code: :server_error | :rate_limit_exceeded | :invalid_prompt | 15 more

      The error code for the response.

      • :server_error

      • :rate_limit_exceeded

      • :invalid_prompt

      • :vector_store_timeout

      • :invalid_image

      • :invalid_image_format

      • :invalid_base64_image

      • :invalid_image_url

      • :image_too_large

      • :image_too_small

      • :image_parse_error

      • :image_content_policy_violation

      • :invalid_image_mode

      • :image_file_too_large

      • :unsupported_image_media_type

      • :empty_image_file

      • :failed_to_download_image

      • :image_file_not_found

    • message: String

      A human-readable description of the error.

  • incomplete_details: IncompleteDetails{ reason}

    Details about why the response is incomplete.

    • reason: :max_output_tokens | :content_filter

      The reason why the response is incomplete.

      • :max_output_tokens

      • :content_filter

  • instructions: String | Array[ResponseInputItem]

    A system (or developer) message inserted into the model's context.

    When using along with previous_response_id, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses.

    • String = String

      A text input to the model, equivalent to a text input with the developer role.

    • InputItemList = Array[ResponseInputItem]

      A list of one or many input items to the model, containing different content types.

      • class EasyInputMessage

        A message input to the model with a role indicating instruction following hierarchy. Instructions given with the developer or system role take precedence over instructions given with the user role. Messages with the assistant role are presumed to have been generated by the model in previous interactions.

        • content: String | ResponseInputMessageContentList

          Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses.

          • String = String

            A text input to the model.

          • ResponseInputMessageContentList = Array[ResponseInputContent]

            A list of one or many input items to the model, containing different content types.

            • class ResponseInputText

              A text input to the model.

              • text: String

                The text input to the model.

              • type: :input_text

                The type of the input item. Always input_text.

                • :input_text

            • class ResponseInputImage

              An image input to the model. Learn about image inputs.

              • detail: :low | :high | :auto | :original

                The detail level of the image to be sent to the model. One of high, low, auto, or original. Defaults to auto.

                • :low

                • :high

                • :auto

                • :original

              • type: :input_image

                The type of the input item. Always input_image.

                • :input_image

              • file_id: String

                The ID of the file to be sent to the model.

              • image_url: String

                The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.

            • class ResponseInputFile

              A file input to the model.

              • type: :input_file

                The type of the input item. Always input_file.

                • :input_file

              • detail: :low | :high

                The detail level of the file to be sent to the model. Use low for the default rendering behavior, or high to render the file at higher quality. Defaults to low.

                • :low

                • :high

              • file_data: String

                The content of the file to be sent to the model.

              • file_id: String

                The ID of the file to be sent to the model.

              • file_url: String

                The URL of the file to be sent to the model.

              • filename: String

                The name of the file to be sent to the model.

        • role: :user | :assistant | :system | :developer

          The role of the message input. One of user, assistant, system, or developer.

          • :user

          • :assistant

          • :system

          • :developer

        • phase: :commentary | :final_answer

          Labels an assistant message as intermediate commentary (commentary) or the final answer (final_answer). For models like gpt-5.3-codex and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages.

          • :commentary

          • :final_answer

        • type: :message

          The type of the message input. Always message.

          • :message

      • class Message

        A message input to the model with a role indicating instruction following hierarchy. Instructions given with the developer or system role take precedence over instructions given with the user role.

        • content: ResponseInputMessageContentList

          A list of one or many input items to the model, containing different content types.

        • role: :user | :system | :developer

          The role of the message input. One of user, system, or developer.

          • :user

          • :system

          • :developer

        • status: :in_progress | :completed | :incomplete

          The status of item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

          • :in_progress

          • :completed

          • :incomplete

        • type: :message

          The type of the message input. Always set to message.

          • :message

      • class ResponseOutputMessage

        An output message from the model.

        • id: String

          The unique ID of the output message.

        • content: Array[ResponseOutputText | ResponseOutputRefusal]

          The content of the output message.

          • class ResponseOutputText

            A text output from the model.

            • annotations: Array[FileCitation{ file_id, filename, index, type} | URLCitation{ end_index, start_index, title, 2 more} | ContainerFileCitation{ container_id, end_index, file_id, 3 more} | FilePath{ file_id, index, type}]

              The annotations of the text output.

              • class FileCitation

                A citation to a file.

                • file_id: String

                  The ID of the file.

                • filename: String

                  The filename of the file cited.

                • index: Integer

                  The index of the file in the list of files.

                • type: :file_citation

                  The type of the file citation. Always file_citation.

                  • :file_citation

              • class URLCitation

                A citation for a web resource used to generate a model response.

                • end_index: Integer

                  The index of the last character of the URL citation in the message.

                • start_index: Integer

                  The index of the first character of the URL citation in the message.

                • title: String

                  The title of the web resource.

                • type: :url_citation

                  The type of the URL citation. Always url_citation.

                  • :url_citation

                • url: String

                  The URL of the web resource.

              • class ContainerFileCitation

                A citation for a container file used to generate a model response.

                • container_id: String

                  The ID of the container file.

                • end_index: Integer

                  The index of the last character of the container file citation in the message.

                • file_id: String

                  The ID of the file.

                • filename: String

                  The filename of the container file cited.

                • start_index: Integer

                  The index of the first character of the container file citation in the message.

                • type: :container_file_citation

                  The type of the container file citation. Always container_file_citation.

                  • :container_file_citation

              • class FilePath

                A path to a file.

                • file_id: String

                  The ID of the file.

                • index: Integer

                  The index of the file in the list of files.

                • type: :file_path

                  The type of the file path. Always file_path.

                  • :file_path

            • text: String

              The text output from the model.

            • type: :output_text

              The type of the output text. Always output_text.

              • :output_text

            • logprobs: Array[Logprob{ token, bytes, logprob, top_logprobs}]

              • token: String

              • bytes: Array[Integer]

              • logprob: Float

              • top_logprobs: Array[TopLogprob{ token, bytes, logprob}]

                • token: String

                • bytes: Array[Integer]

                • logprob: Float

          • class ResponseOutputRefusal

            A refusal from the model.

            • refusal: String

              The refusal explanation from the model.

            • type: :refusal

              The type of the refusal. Always refusal.

              • :refusal

        • role: :assistant

          The role of the output message. Always assistant.

          • :assistant

        • status: :in_progress | :completed | :incomplete

          The status of the message input. One of in_progress, completed, or incomplete. Populated when input items are returned via API.

          • :in_progress

          • :completed

          • :incomplete

        • type: :message

          The type of the output message. Always message.

          • :message

        • phase: :commentary | :final_answer

          Labels an assistant message as intermediate commentary (commentary) or the final answer (final_answer). For models like gpt-5.3-codex and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages.

          • :commentary

          • :final_answer

      • class ResponseFileSearchToolCall

        The results of a file search tool call. See the file search guide for more information.

        • id: String

          The unique ID of the file search tool call.

        • queries: Array[String]

          The queries used to search for files.

        • status: :in_progress | :searching | :completed | 2 more

          The status of the file search tool call. One of in_progress, searching, incomplete or failed,

          • :in_progress

          • :searching

          • :completed

          • :incomplete

          • :failed

        • type: :file_search_call

          The type of the file search tool call. Always file_search_call.

          • :file_search_call

        • results: Array[Result{ attributes, file_id, filename, 2 more}]

          The results of the file search tool call.

          • attributes: Hash[Symbol, String | Float | bool]

            Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers.

            • String = String

            • Float = Float

            • UnionMember2 = bool

          • file_id: String

            The unique ID of the file.

          • filename: String

            The name of the file.

          • score: Float

            The relevance score of the file - a value between 0 and 1.

          • text: String

            The text that was retrieved from the file.

      • class ResponseComputerToolCall

        A tool call to a computer use tool. See the computer use guide for more information.

        • id: String

          The unique ID of the computer call.

        • call_id: String

          An identifier used when responding to the tool call with output.

        • pending_safety_checks: Array[PendingSafetyCheck{ id, code, message}]

          The pending safety checks for the computer call.

          • id: String

            The ID of the pending safety check.

          • code: String

            The type of the pending safety check.

          • message: String

            Details about the pending safety check.

        • status: :in_progress | :completed | :incomplete

          The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

          • :in_progress

          • :completed

          • :incomplete

        • type: :computer_call

          The type of the computer call. Always computer_call.

          • :computer_call

        • action: Click{ button, type, x, 2 more} | DoubleClick{ keys, type, x, y_} | Drag{ path, type, keys} | 6 more

          A click action.

          • class Click

            A click action.

            • button: :left | :right | :wheel | 2 more

              Indicates which mouse button was pressed during the click. One of left, right, wheel, back, or forward.

              • :left

              • :right

              • :wheel

              • :back

              • :forward

            • type: :click

              Specifies the event type. For a click action, this property is always click.

              • :click

            • x: Integer

              The x-coordinate where the click occurred.

            • y_: Integer

              The y-coordinate where the click occurred.

            • keys: Array[String]

              The keys being held while clicking.

          • class DoubleClick

            A double click action.

            • keys: Array[String]

              The keys being held while double-clicking.

            • type: :double_click

              Specifies the event type. For a double click action, this property is always set to double_click.

              • :double_click

            • x: Integer

              The x-coordinate where the double click occurred.

            • y_: Integer

              The y-coordinate where the double click occurred.

          • class Drag

            A drag action.

            • path: Array[Path{ x, y_}]

              An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg

              [
                { x: 100, y: 200 },
                { x: 200, y: 300 }
              ]
              

              • x: Integer

                The x-coordinate.

              • y_: Integer

                The y-coordinate.

            • type: :drag

              Specifies the event type. For a drag action, this property is always set to drag.

              • :drag

            • keys: Array[String]

              The keys being held while dragging the mouse.

          • class Keypress

            A collection of keypresses the model would like to perform.

            • keys: Array[String]

              The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.

            • type: :keypress

              Specifies the event type. For a keypress action, this property is always set to keypress.

              • :keypress

          • class Move

            A mouse move action.

            • type: :move

              Specifies the event type. For a move action, this property is always set to move.

              • :move

            • x: Integer

              The x-coordinate to move to.

            • y_: Integer

              The y-coordinate to move to.

            • keys: Array[String]

              The keys being held while moving the mouse.

          • class Screenshot

            A screenshot action.

            • type: :screenshot

              Specifies the event type. For a screenshot action, this property is always set to screenshot.

              • :screenshot

          • class Scroll

            A scroll action.

            • scroll_x: Integer

              The horizontal scroll distance.

            • scroll_y: Integer

              The vertical scroll distance.

            • type: :scroll

              Specifies the event type. For a scroll action, this property is always set to scroll.

              • :scroll

            • x: Integer

              The x-coordinate where the scroll occurred.

            • y_: Integer

              The y-coordinate where the scroll occurred.

            • keys: Array[String]

              The keys being held while scrolling.

          • class Type

            An action to type in text.

            • text: String

              The text to type.

            • type: :type

              Specifies the event type. For a type action, this property is always set to type.

              • :type

          • class Wait

            A wait action.

            • type: :wait

              Specifies the event type. For a wait action, this property is always set to wait.

              • :wait

        • actions: ComputerActionList

          Flattened batched actions for computer_use. Each action includes an type discriminator and action-specific fields.

          • class Click

            A click action.

            • button: :left | :right | :wheel | 2 more

              Indicates which mouse button was pressed during the click. One of left, right, wheel, back, or forward.

              • :left

              • :right

              • :wheel

              • :back

              • :forward

            • type: :click

              Specifies the event type. For a click action, this property is always click.

              • :click

            • x: Integer

              The x-coordinate where the click occurred.

            • y_: Integer

              The y-coordinate where the click occurred.

            • keys: Array[String]

              The keys being held while clicking.

          • class DoubleClick

            A double click action.

            • keys: Array[String]

              The keys being held while double-clicking.

            • type: :double_click

              Specifies the event type. For a double click action, this property is always set to double_click.

              • :double_click

            • x: Integer

              The x-coordinate where the double click occurred.

            • y_: Integer

              The y-coordinate where the double click occurred.

          • class Drag

            A drag action.

            • path: Array[Path{ x, y_}]

              An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg

              [
                { x: 100, y: 200 },
                { x: 200, y: 300 }
              ]
              

              • x: Integer

                The x-coordinate.

              • y_: Integer

                The y-coordinate.

            • type: :drag

              Specifies the event type. For a drag action, this property is always set to drag.

              • :drag

            • keys: Array[String]

              The keys being held while dragging the mouse.

          • class Keypress

            A collection of keypresses the model would like to perform.

            • keys: Array[String]

              The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.

            • type: :keypress

              Specifies the event type. For a keypress action, this property is always set to keypress.

              • :keypress

          • class Move

            A mouse move action.

            • type: :move

              Specifies the event type. For a move action, this property is always set to move.

              • :move

            • x: Integer

              The x-coordinate to move to.

            • y_: Integer

              The y-coordinate to move to.

            • keys: Array[String]

              The keys being held while moving the mouse.

          • class Screenshot

            A screenshot action.

            • type: :screenshot

              Specifies the event type. For a screenshot action, this property is always set to screenshot.

              • :screenshot

          • class Scroll

            A scroll action.

            • scroll_x: Integer

              The horizontal scroll distance.

            • scroll_y: Integer

              The vertical scroll distance.

            • type: :scroll

              Specifies the event type. For a scroll action, this property is always set to scroll.

              • :scroll

            • x: Integer

              The x-coordinate where the scroll occurred.

            • y_: Integer

              The y-coordinate where the scroll occurred.

            • keys: Array[String]

              The keys being held while scrolling.

          • class Type

            An action to type in text.

            • text: String

              The text to type.

            • type: :type

              Specifies the event type. For a type action, this property is always set to type.

              • :type

          • class Wait

            A wait action.

            • type: :wait

              Specifies the event type. For a wait action, this property is always set to wait.

              • :wait

      • class ComputerCallOutput

        The output of a computer tool call.

        • call_id: String

          The ID of the computer tool call that produced the output.

        • output: ResponseComputerToolCallOutputScreenshot

          A computer screenshot image used with the computer use tool.

          • type: :computer_screenshot

            Specifies the event type. For a computer screenshot, this property is always set to computer_screenshot.

            • :computer_screenshot

          • file_id: String

            The identifier of an uploaded file that contains the screenshot.

          • image_url: String

            The URL of the screenshot image.

        • type: :computer_call_output

          The type of the computer tool call output. Always computer_call_output.

          • :computer_call_output

        • id: String

          The ID of the computer tool call output.

        • acknowledged_safety_checks: Array[AcknowledgedSafetyCheck{ id, code, message}]

          The safety checks reported by the API that have been acknowledged by the developer.

          • id: String

            The ID of the pending safety check.

          • code: String

            The type of the pending safety check.

          • message: String

            Details about the pending safety check.

        • status: :in_progress | :completed | :incomplete

          The status of the message input. One of in_progress, completed, or incomplete. Populated when input items are returned via API.

          • :in_progress

          • :completed

          • :incomplete

      • class ResponseFunctionWebSearch

        The results of a web search tool call. See the web search guide for more information.

        • id: String

          The unique ID of the web search tool call.

        • action: Search{ type, queries, query, sources} | OpenPage{ type, url} | FindInPage{ pattern, type, url}

          An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page).

          • class Search

            Action type "search" - Performs a web search query.

            • type: :search

              The action type.

              • :search

            • queries: Array[String]

              The search queries.

            • query: String

              The search query.

            • sources: Array[Source{ type, url}]

              The sources used in the search.

              • type: :url

                The type of source. Always url.

                • :url

              • url: String

                The URL of the source.

          • class OpenPage

            Action type "open_page" - Opens a specific URL from search results.

            • type: :open_page

              The action type.

              • :open_page

            • url: String

              The URL opened by the model.

          • class FindInPage

            Action type "find_in_page": Searches for a pattern within a loaded page.

            • pattern: String

              The pattern or text to search for within the page.

            • type: :find_in_page

              The action type.

              • :find_in_page

            • url: String

              The URL of the page searched for the pattern.

        • status: :in_progress | :searching | :completed | :failed

          The status of the web search tool call.

          • :in_progress

          • :searching

          • :completed

          • :failed

        • type: :web_search_call

          The type of the web search tool call. Always web_search_call.

          • :web_search_call

      • class ResponseFunctionToolCall

        A tool call to run a function. See the function calling guide for more information.

        • arguments: String

          A JSON string of the arguments to pass to the function.

        • call_id: String

          The unique ID of the function tool call generated by the model.

        • name: String

          The name of the function to run.

        • type: :function_call

          The type of the function tool call. Always function_call.

          • :function_call

        • id: String

          The unique ID of the function tool call.

        • namespace: String

          The namespace of the function to run.

        • status: :in_progress | :completed | :incomplete

          The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

          • :in_progress

          • :completed

          • :incomplete

      • class FunctionCallOutput

        The output of a function tool call.

        • call_id: String

          The unique ID of the function tool call generated by the model.

        • output: String | ResponseFunctionCallOutputItemList

          Text, image, or file output of the function tool call.

          • String = String

            A JSON string of the output of the function tool call.

          • ResponseFunctionCallOutputItemList = Array[ResponseFunctionCallOutputItem]

            An array of content outputs (text, image, file) for the function tool call.

            • class ResponseInputTextContent

              A text input to the model.

              • text: String

                The text input to the model.

              • type: :input_text

                The type of the input item. Always input_text.

                • :input_text

            • class ResponseInputImageContent

              An image input to the model. Learn about image inputs

              • type: :input_image

                The type of the input item. Always input_image.

                • :input_image

              • detail: :low | :high | :auto | :original

                The detail level of the image to be sent to the model. One of high, low, auto, or original. Defaults to auto.

                • :low

                • :high

                • :auto

                • :original

              • file_id: String

                The ID of the file to be sent to the model.

              • image_url: String

                The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.

            • class ResponseInputFileContent

              A file input to the model.

              • type: :input_file

                The type of the input item. Always input_file.

                • :input_file

              • detail: :low | :high

                The detail level of the file to be sent to the model. Use low for the default rendering behavior, or high to render the file at higher quality. Defaults to low.

                • :low

                • :high

              • file_data: String

                The base64-encoded data of the file to be sent to the model.

              • file_id: String

                The ID of the file to be sent to the model.

              • file_url: String

                The URL of the file to be sent to the model.

              • filename: String

                The name of the file to be sent to the model.

        • type: :function_call_output

          The type of the function tool call output. Always function_call_output.

          • :function_call_output

        • id: String

          The unique ID of the function tool call output. Populated when this item is returned via API.

        • status: :in_progress | :completed | :incomplete

          The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

          • :in_progress

          • :completed

          • :incomplete

      • class ToolSearchCall

        • arguments: untyped

          The arguments supplied to the tool search call.

        • type: :tool_search_call

          The item type. Always tool_search_call.

          • :tool_search_call

        • id: String

          The unique ID of this tool search call.

        • call_id: String

          The unique ID of the tool search call generated by the model.

        • execution: :server | :client

          Whether tool search was executed by the server or by the client.

          • :server

          • :client

        • status: :in_progress | :completed | :incomplete

          The status of the tool search call.

          • :in_progress

          • :completed

          • :incomplete

      • class ResponseToolSearchOutputItemParam

        • tools: Array[Tool]

          The loaded tool definitions returned by the tool search output.

          • class FunctionTool

            Defines a function in your own code the model can choose to call. Learn more about function calling.

            • name: String

              The name of the function to call.

            • parameters: Hash[Symbol, untyped]

              A JSON schema object describing the parameters of the function.

            • strict: bool

              Whether to enforce strict parameter validation. Default true.

            • type: :function

              The type of the function tool. Always function.

              • :function

            • defer_loading: bool

              Whether this function is deferred and loaded via tool search.

            • description: String

              A description of the function. Used by the model to determine whether or not to call the function.

          • class FileSearchTool

            A tool that searches for relevant content from uploaded files. Learn more about the file search tool.

            • type: :file_search

              The type of the file search tool. Always file_search.

              • :file_search

            • vector_store_ids: Array[String]

              The IDs of the vector stores to search.

            • filters: ComparisonFilter | CompoundFilter

              A filter to apply.

              • class ComparisonFilter

                A filter used to compare a specified attribute key to a given value using a defined comparison operation.

                • key: String

                  The key to compare against the value.

                • type: :eq | :ne | :gt | 5 more

                  Specifies the comparison operator: eq, ne, gt, gte, lt, lte, in, nin.

                  • eq: equals

                  • ne: not equal

                  • gt: greater than

                  • gte: greater than or equal

                  • lt: less than

                  • lte: less than or equal

                  • in: in

                  • nin: not in

                  • :eq

                  • :ne

                  • :gt

                  • :gte

                  • :lt

                  • :lte

                  • :in

                  • :nin

                • value: String | Float | bool | Array[String | Float]

                  The value to compare against the attribute key; supports string, number, or boolean types.

                  • String = String

                  • Float = Float

                  • UnionMember2 = bool

                  • UnionMember3 = Array[String | Float]

                    • String = String

                    • Float = Float

              • class CompoundFilter

                Combine multiple filters using and or or.

                • filters: Array[ComparisonFilter | untyped]

                  Array of filters to combine. Items can be ComparisonFilter or CompoundFilter.

                  • class ComparisonFilter

                    A filter used to compare a specified attribute key to a given value using a defined comparison operation.

                  • UnionMember1 = untyped

                • type: :and | :or

                  Type of operation: and or or.

                  • :and

                  • :or

            • max_num_results: Integer

              The maximum number of results to return. This number should be between 1 and 50 inclusive.

            • ranking_options: RankingOptions{ hybrid_search, ranker, score_threshold}

              Ranking options for search.

              • hybrid_search: HybridSearch{ embedding_weight, text_weight}

                Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled.

                • embedding_weight: Float

                  The weight of the embedding in the reciprocal ranking fusion.

                • text_weight: Float

                  The weight of the text in the reciprocal ranking fusion.

              • ranker: :auto | :"default-2024-11-15"

                The ranker to use for the file search.

                • :auto

                • :"default-2024-11-15"

              • score_threshold: Float

                The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results.

          • class ComputerTool

            A tool that controls a virtual computer. Learn more about the computer tool.

            • type: :computer

              The type of the computer tool. Always computer.

              • :computer

          • class ComputerUsePreviewTool

            A tool that controls a virtual computer. Learn more about the computer tool.

            • display_height: Integer

              The height of the computer display.

            • display_width: Integer

              The width of the computer display.

            • environment: :windows | :mac | :linux | 2 more

              The type of computer environment to control.

              • :windows

              • :mac

              • :linux

              • :ubuntu

              • :browser

            • type: :computer_use_preview

              The type of the computer use tool. Always computer_use_preview.

              • :computer_use_preview

          • class WebSearchTool

            Search the Internet for sources related to the prompt. Learn more about the web search tool.

            • type: :web_search | :web_search_2025_08_26

              The type of the web search tool. One of web_search or web_search_2025_08_26.

              • :web_search

              • :web_search_2025_08_26

            • filters: Filters{ allowed_domains}

              Filters for the search.

              • allowed_domains: Array[String]

                Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well.

                Example: ["pubmed.ncbi.nlm.nih.gov"]

            • search_context_size: :low | :medium | :high

              High level guidance for the amount of context window space to use for the search. One of low, medium, or high. medium is the default.

              • :low

              • :medium

              • :high

            • user_location: UserLocation{ city, country, region, 2 more}

              The approximate location of the user.

              • city: String

                Free text input for the city of the user, e.g. San Francisco.

              • country: String

                The two-letter ISO country code of the user, e.g. US.

              • region: String

                Free text input for the region of the user, e.g. California.

              • timezone: String

                The IANA timezone of the user, e.g. America/Los_Angeles.

              • type: :approximate

                The type of location approximation. Always approximate.

                • :approximate

          • class Mcp

            Give the model access to additional tools via remote Model Context Protocol (MCP) servers. Learn more about MCP.

            • server_label: String

              A label for this MCP server, used to identify it in tool calls.

            • type: :mcp

              The type of the MCP tool. Always mcp.

              • :mcp

            • allowed_tools: Array[String] | McpToolFilter{ read_only, tool_names}

              List of allowed tool names or a filter object.

              • McpAllowedTools = Array[String]

                A string array of allowed tool names

              • class McpToolFilter

                A filter object to specify which tools are allowed.

                • read_only: bool

                  Indicates whether or not a tool modifies data or is read-only. If an MCP server is annotated with readOnlyHint, it will match this filter.

                • tool_names: Array[String]

                  List of allowed tool names.

            • authorization: String

              An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here.

            • connector_id: :connector_dropbox | :connector_gmail | :connector_googlecalendar | 5 more

              Identifier for service connectors, like those available in ChatGPT. One of server_url or connector_id must be provided. Learn more about service connectors here.

              Currently supported connector_id values are:

              • Dropbox: connector_dropbox

              • Gmail: connector_gmail

              • Google Calendar: connector_googlecalendar

              • Google Drive: connector_googledrive

              • Microsoft Teams: connector_microsoftteams

              • Outlook Calendar: connector_outlookcalendar

              • Outlook Email: connector_outlookemail

              • SharePoint: connector_sharepoint

              • :connector_dropbox

              • :connector_gmail

              • :connector_googlecalendar

              • :connector_googledrive

              • :connector_microsoftteams

              • :connector_outlookcalendar

              • :connector_outlookemail

              • :connector_sharepoint

            • defer_loading: bool

              Whether this MCP tool is deferred and discovered via tool search.

            • headers: Hash[Symbol, String]

              Optional HTTP headers to send to the MCP server. Use for authentication or other purposes.

            • require_approval: McpToolApprovalFilter{ always, never} | :always | :never

              Specify which of the MCP server's tools require approval.

              • class McpToolApprovalFilter

                Specify which of the MCP server's tools require approval. Can be always, never, or a filter object associated with tools that require approval.

                • always: Always{ read_only, tool_names}

                  A filter object to specify which tools are allowed.

                  • read_only: bool

                    Indicates whether or not a tool modifies data or is read-only. If an MCP server is annotated with readOnlyHint, it will match this filter.

                  • tool_names: Array[String]

                    List of allowed tool names.

                • never: Never{ read_only, tool_names}

                  A filter object to specify which tools are allowed.

                  • read_only: bool

                    Indicates whether or not a tool modifies data or is read-only. If an MCP server is annotated with readOnlyHint, it will match this filter.

                  • tool_names: Array[String]

                    List of allowed tool names.

              • McpToolApprovalSetting = :always | :never

                Specify a single approval policy for all tools. One of always or never. When set to always, all tools will require approval. When set to never, all tools will not require approval.

                • :always

                • :never

            • server_description: String

              Optional description of the MCP server, used to provide more context.

            • server_url: String

              The URL for the MCP server. One of server_url or connector_id must be provided.

          • class CodeInterpreter

            A tool that runs Python code to help generate a response to a prompt.

            • container: String | CodeInterpreterToolAuto{ type, file_ids, memory_limit, network_policy}

              The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional memory_limit setting.

              • String = String

                The container ID.

              • class CodeInterpreterToolAuto

                Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on.

                • type: :auto

                  Always auto.

                  • :auto

                • file_ids: Array[String]

                  An optional list of uploaded files to make available to your code.

                • memory_limit: :"1g" | :"4g" | :"16g" | :"64g"

                  The memory limit for the code interpreter container.

                  • :"1g"

                  • :"4g"

                  • :"16g"

                  • :"64g"

                • network_policy: ContainerNetworkPolicyDisabled | ContainerNetworkPolicyAllowlist

                  Network access policy for the container.

                  • class ContainerNetworkPolicyDisabled

                    • type: :disabled

                      Disable outbound network access. Always disabled.

                      • :disabled

                  • class ContainerNetworkPolicyAllowlist

                    • allowed_domains: Array[String]

                      A list of allowed domains when type is allowlist.

                    • type: :allowlist

                      Allow outbound network access only to specified domains. Always allowlist.

                      • :allowlist

                    • domain_secrets: Array[ContainerNetworkPolicyDomainSecret]

                      Optional domain-scoped secrets for allowlisted domains.

                      • domain: String

                        The domain associated with the secret.

                      • name: String

                        The name of the secret to inject for the domain.

                      • value: String

                        The secret value to inject for the domain.

            • type: :code_interpreter

              The type of the code interpreter tool. Always code_interpreter.

              • :code_interpreter

          • class ImageGeneration

            A tool that generates images using the GPT image models.

            • type: :image_generation

              The type of the image generation tool. Always image_generation.

              • :image_generation

            • action: :generate | :edit | :auto

              Whether to generate a new image or edit an existing image. Default: auto.

              • :generate

              • :edit

              • :auto

            • background: :transparent | :opaque | :auto

              Allows to set transparency for the background of the generated image(s). This parameter is only supported for GPT image models that support transparent backgrounds. Must be one of transparent, opaque, or auto (default value). When auto is used, the model will automatically determine the best background for the image.

              gpt-image-2 and gpt-image-2-2026-04-21 do not support transparent backgrounds. Requests with background set to transparent will return an error for these models; use opaque or auto instead.

              If transparent, the output format needs to support transparency, so it should be set to either png (default value) or webp.

              • :transparent

              • :opaque

              • :auto

            • input_fidelity: :high | :low

              Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for gpt-image-1 and gpt-image-1.5 and later models, unsupported for gpt-image-1-mini. Supports high and low. Defaults to low.

              • :high

              • :low

            • input_image_mask: InputImageMask{ file_id, image_url}

              Optional mask for inpainting. Contains image_url (string, optional) and file_id (string, optional).

              • file_id: String

                File ID for the mask image.

              • image_url: String

                Base64-encoded mask image.

            • model: String | :"gpt-image-1" | :"gpt-image-1-mini" | :"gpt-image-2" | 3 more

              The image generation model to use. Default: gpt-image-1.

              • String = String

              • Model = :"gpt-image-1" | :"gpt-image-1-mini" | :"gpt-image-2" | 3 more

                The image generation model to use. Default: gpt-image-1.

                • :"gpt-image-1"

                • :"gpt-image-1-mini"

                • :"gpt-image-2"

                • :"gpt-image-2-2026-04-21"

                • :"gpt-image-1.5"

                • :"chatgpt-image-latest"

            • moderation: :auto | :low

              Moderation level for the generated image. Default: auto.

              • :auto

              • :low

            • output_compression: Integer

              Compression level for the output image. Default: 100.

            • output_format: :png | :webp | :jpeg

              The output format of the generated image. One of png, webp, or jpeg. Default: png.

              • :png

              • :webp

              • :jpeg

            • partial_images: Integer

              Number of partial images to generate in streaming mode, from 0 (default value) to 3.

            • quality: :low | :medium | :high | :auto

              The quality of the generated image. One of low, medium, high, or auto. Default: auto.

              • :low

              • :medium

              • :high

              • :auto

            • size: String | :"1024x1024" | :"1024x1536" | :"1536x1024" | :auto

              The size of the generated images. For gpt-image-2 and gpt-image-2-2026-04-21, arbitrary resolutions are supported as WIDTHxHEIGHT strings, for example 1536x864. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above 2560x1440 are experimental, and the maximum supported resolution is 3840x2160. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes 1024x1024, 1536x1024, and 1024x1536 are supported by the GPT image models; auto is supported for models that allow automatic sizing. For dall-e-2, use one of 256x256, 512x512, or 1024x1024. For dall-e-3, use one of 1024x1024, 1792x1024, or 1024x1792.

              • String = String

              • Size = :"1024x1024" | :"1024x1536" | :"1536x1024" | :auto

                The size of the generated images. For gpt-image-2 and gpt-image-2-2026-04-21, arbitrary resolutions are supported as WIDTHxHEIGHT strings, for example 1536x864. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above 2560x1440 are experimental, and the maximum supported resolution is 3840x2160. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes 1024x1024, 1536x1024, and 1024x1536 are supported by the GPT image models; auto is supported for models that allow automatic sizing. For dall-e-2, use one of 256x256, 512x512, or 1024x1024. For dall-e-3, use one of 1024x1024, 1792x1024, or 1024x1792.

                • :"1024x1024"

                • :"1024x1536"

                • :"1536x1024"

                • :auto

          • class LocalShell

            A tool that allows the model to execute shell commands in a local environment.

            • type: :local_shell

              The type of the local shell tool. Always local_shell.

              • :local_shell

          • class FunctionShellTool

            A tool that allows the model to execute shell commands.

            • type: :shell

              The type of the shell tool. Always shell.

              • :shell

            • environment: ContainerAuto | LocalEnvironment | ContainerReference

              • class ContainerAuto

                • type: :container_auto

                  Automatically creates a container for this request

                  • :container_auto

                • file_ids: Array[String]

                  An optional list of uploaded files to make available to your code.

                • memory_limit: :"1g" | :"4g" | :"16g" | :"64g"

                  The memory limit for the container.

                  • :"1g"

                  • :"4g"

                  • :"16g"

                  • :"64g"

                • network_policy: ContainerNetworkPolicyDisabled | ContainerNetworkPolicyAllowlist

                  Network access policy for the container.

                  • class ContainerNetworkPolicyDisabled

                  • class ContainerNetworkPolicyAllowlist

                • skills: Array[SkillReference | InlineSkill]

                  An optional list of skills referenced by id or inline data.

                  • class SkillReference

                    • skill_id: String

                      The ID of the referenced skill.

                    • type: :skill_reference

                      References a skill created with the /v1/skills endpoint.

                      • :skill_reference

                    • version: String

                      Optional skill version. Use a positive integer or 'latest'. Omit for default.

                  • class InlineSkill

                    • description: String

                      The description of the skill.

                    • name: String

                      The name of the skill.

                    • source: InlineSkillSource

                      Inline skill payload

                      • data: String

                        Base64-encoded skill zip bundle.

                      • media_type: :"application/zip"

                        The media type of the inline skill payload. Must be application/zip.

                        • :"application/zip"

                      • type: :base64

                        The type of the inline skill source. Must be base64.

                        • :base64

                    • type: :inline

                      Defines an inline skill for this request.

                      • :inline

              • class LocalEnvironment

                • type: :local

                  Use a local computer environment.

                  • :local

                • skills: Array[LocalSkill]

                  An optional list of skills.

                  • description: String

                    The description of the skill.

                  • name: String

                    The name of the skill.

                  • path: String

                    The path to the directory containing the skill.

              • class ContainerReference

                • container_id: String

                  The ID of the referenced container.

                • type: :container_reference

                  References a container created with the /v1/containers endpoint

                  • :container_reference

          • class CustomTool

            A custom tool that processes input using a specified format. Learn more about custom tools

            • name: String

              The name of the custom tool, used to identify it in tool calls.

            • type: :custom

              The type of the custom tool. Always custom.

              • :custom

            • defer_loading: bool

              Whether this tool should be deferred and discovered via tool search.

            • description: String

              Optional description of the custom tool, used to provide more context.

            • format_: CustomToolInputFormat

              The input format for the custom tool. Default is unconstrained text.

              • class Text

                Unconstrained free-form text.

                • type: :text

                  Unconstrained text format. Always text.

                  • :text

              • class Grammar

                A grammar defined by the user.

                • definition: String

                  The grammar definition.

                • syntax: :lark | :regex

                  The syntax of the grammar definition. One of lark or regex.

                  • :lark

                  • :regex

                • type: :grammar

                  Grammar format. Always grammar.

                  • :grammar

          • class NamespaceTool

            Groups function/custom tools under a shared namespace.

            • description: String

              A description of the namespace shown to the model.

            • name: String

              The namespace name used in tool calls (for example, crm).

            • tools: Array[Function{ name, type, defer_loading, 3 more} | CustomTool]

              The function/custom tools available inside this namespace.

              • class Function

                • name: String

                • type: :function

                  • :function

                • defer_loading: bool

                  Whether this function should be deferred and discovered via tool search.

                • description: String

                • parameters: untyped

                • strict: bool

              • class CustomTool

                A custom tool that processes input using a specified format. Learn more about custom tools

            • type: :namespace

              The type of the tool. Always namespace.

              • :namespace

          • class ToolSearchTool

            Hosted or BYOT tool search configuration for deferred tools.

            • type: :tool_search

              The type of the tool. Always tool_search.

              • :tool_search

            • description: String

              Description shown to the model for a client-executed tool search tool.

            • execution: :server | :client

              Whether tool search is executed by the server or by the client.

              • :server

              • :client

            • parameters: untyped

              Parameter schema for a client-executed tool search tool.

          • class WebSearchPreviewTool

            This tool searches the web for relevant results to use in a response. Learn more about the web search tool.

            • type: :web_search_preview | :web_search_preview_2025_03_11

              The type of the web search tool. One of web_search_preview or web_search_preview_2025_03_11.

              • :web_search_preview

              • :web_search_preview_2025_03_11

            • search_content_types: Array[:text | :image]

              • :text

              • :image

            • search_context_size: :low | :medium | :high

              High level guidance for the amount of context window space to use for the search. One of low, medium, or high. medium is the default.

              • :low

              • :medium

              • :high

            • user_location: UserLocation{ type, city, country, 2 more}

              The user's location.

              • type: :approximate

                The type of location approximation. Always approximate.

                • :approximate

              • city: String

                Free text input for the city of the user, e.g. San Francisco.

              • country: String

                The two-letter ISO country code of the user, e.g. US.

              • region: String

                Free text input for the region of the user, e.g. California.

              • timezone: String

                The IANA timezone of the user, e.g. America/Los_Angeles.

          • class ApplyPatchTool

            Allows the assistant to create, delete, or update files using unified diffs.

            • type: :apply_patch

              The type of the tool. Always apply_patch.

              • :apply_patch

        • type: :tool_search_output

          The item type. Always tool_search_output.

          • :tool_search_output

        • id: String

          The unique ID of this tool search output.

        • call_id: String

          The unique ID of the tool search call generated by the model.

        • execution: :server | :client

          Whether tool search was executed by the server or by the client.

          • :server

          • :client

        • status: :in_progress | :completed | :incomplete

          The status of the tool search output.

          • :in_progress

          • :completed

          • :incomplete

      • class AdditionalTools

        • role: :developer

          The role that provided the additional tools. Only developer is supported.

          • :developer

        • tools: Array[Tool]

          A list of additional tools made available at this item.

          • class FunctionTool

            Defines a function in your own code the model can choose to call. Learn more about function calling.

          • class FileSearchTool

            A tool that searches for relevant content from uploaded files. Learn more about the file search tool.

          • class ComputerTool

            A tool that controls a virtual computer. Learn more about the computer tool.

          • class ComputerUsePreviewTool

            A tool that controls a virtual computer. Learn more about the computer tool.

          • class WebSearchTool

            Search the Internet for sources related to the prompt. Learn more about the web search tool.

          • class Mcp

            Give the model access to additional tools via remote Model Context Protocol (MCP) servers. Learn more about MCP.

          • class CodeInterpreter

            A tool that runs Python code to help generate a response to a prompt.

          • class ImageGeneration

            A tool that generates images using the GPT image models.

          • class LocalShell

            A tool that allows the model to execute shell commands in a local environment.

          • class FunctionShellTool

            A tool that allows the model to execute shell commands.

          • class CustomTool

            A custom tool that processes input using a specified format. Learn more about custom tools

          • class NamespaceTool

            Groups function/custom tools under a shared namespace.

          • class ToolSearchTool

            Hosted or BYOT tool search configuration for deferred tools.

          • class WebSearchPreviewTool

            This tool searches the web for relevant results to use in a response. Learn more about the web search tool.

          • class ApplyPatchTool

            Allows the assistant to create, delete, or update files using unified diffs.

        • type: :additional_tools

          The item type. Always additional_tools.

          • :additional_tools

        • id: String

          The unique ID of this additional tools item.

      • class ResponseReasoningItem

        A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your input to the Responses API for subsequent turns of a conversation if you are manually managing context.

        • id: String

          The unique identifier of the reasoning content.

        • summary: Array[Summary{ text, type}]

          Reasoning summary content.

          • text: String

            A summary of the reasoning output from the model so far.

          • type: :summary_text

            The type of the object. Always summary_text.

            • :summary_text

        • type: :reasoning

          The type of the object. Always reasoning.

          • :reasoning

        • content: Array[Content{ text, type}]

          Reasoning text content.

          • text: String

            The reasoning text from the model.

          • type: :reasoning_text

            The type of the reasoning text. Always reasoning_text.

            • :reasoning_text

        • encrypted_content: String

          The encrypted content of the reasoning item - populated when a response is generated with reasoning.encrypted_content in the include parameter.

        • status: :in_progress | :completed | :incomplete

          The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

          • :in_progress

          • :completed

          • :incomplete

      • class ResponseCompactionItemParam

        A compaction item generated by the v1/responses/compact API.

        • encrypted_content: String

          The encrypted content of the compaction summary.

        • type: :compaction

          The type of the item. Always compaction.

          • :compaction

        • id: String

          The ID of the compaction item.

      • class ImageGenerationCall

        An image generation request made by the model.

        • id: String

          The unique ID of the image generation call.

        • result: String

          The generated image encoded in base64.

        • status: :in_progress | :completed | :generating | :failed

          The status of the image generation call.

          • :in_progress

          • :completed

          • :generating

          • :failed

        • type: :image_generation_call

          The type of the image generation call. Always image_generation_call.

          • :image_generation_call

      • class ResponseCodeInterpreterToolCall

        A tool call to run code.

        • id: String

          The unique ID of the code interpreter tool call.

        • code: String

          The code to run, or null if not available.

        • container_id: String

          The ID of the container used to run the code.

        • outputs: Array[Logs{ logs, type} | Image{ type, url}]

          The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available.

          • class Logs

            The logs output from the code interpreter.

            • logs: String

              The logs output from the code interpreter.

            • type: :logs

              The type of the output. Always logs.

              • :logs

          • class Image

            The image output from the code interpreter.

            • type: :image

              The type of the output. Always image.

              • :image

            • url: String

              The URL of the image output from the code interpreter.

        • status: :in_progress | :completed | :incomplete | 2 more

          The status of the code interpreter tool call. Valid values are in_progress, completed, incomplete, interpreting, and failed.

          • :in_progress

          • :completed

          • :incomplete

          • :interpreting

          • :failed

        • type: :code_interpreter_call

          The type of the code interpreter tool call. Always code_interpreter_call.

          • :code_interpreter_call

      • class LocalShellCall

        A tool call to run a command on the local shell.

        • id: String

          The unique ID of the local shell call.

        • action: Action{ command, env, type, 3 more}

          Execute a shell command on the server.

          • command: Array[String]

            The command to run.

          • env: Hash[Symbol, String]

            Environment variables to set for the command.

          • type: :exec

            The type of the local shell action. Always exec.

            • :exec

          • timeout_ms: Integer

            Optional timeout in milliseconds for the command.

          • user: String

            Optional user to run the command as.

          • working_directory: String

            Optional working directory to run the command in.

        • call_id: String

          The unique ID of the local shell tool call generated by the model.

        • status: :in_progress | :completed | :incomplete

          The status of the local shell call.

          • :in_progress

          • :completed

          • :incomplete

        • type: :local_shell_call

          The type of the local shell call. Always local_shell_call.

          • :local_shell_call

      • class LocalShellCallOutput

        The output of a local shell tool call.

        • id: String

          The unique ID of the local shell tool call generated by the model.

        • output: String

          A JSON string of the output of the local shell tool call.

        • type: :local_shell_call_output

          The type of the local shell tool call output. Always local_shell_call_output.

          • :local_shell_call_output

        • status: :in_progress | :completed | :incomplete

          The status of the item. One of in_progress, completed, or incomplete.

          • :in_progress

          • :completed

          • :incomplete

      • class ShellCall

        A tool representing a request to execute one or more shell commands.

        • action: Action{ commands, max_output_length, timeout_ms}

          The shell commands and limits that describe how to run the tool call.

          • commands: Array[String]

            Ordered shell commands for the execution environment to run.

          • max_output_length: Integer

            Maximum number of UTF-8 characters to capture from combined stdout and stderr output.

          • timeout_ms: Integer

            Maximum wall-clock time in milliseconds to allow the shell commands to run.

        • call_id: String

          The unique ID of the shell tool call generated by the model.

        • type: :shell_call

          The type of the item. Always shell_call.

          • :shell_call

        • id: String

          The unique ID of the shell tool call. Populated when this item is returned via API.

        • environment: LocalEnvironment | ContainerReference

          The environment to execute the shell commands in.

          • class LocalEnvironment

          • class ContainerReference

        • status: :in_progress | :completed | :incomplete

          The status of the shell call. One of in_progress, completed, or incomplete.

          • :in_progress

          • :completed

          • :incomplete

      • class ShellCallOutput

        The streamed output items emitted by a shell tool call.

        • call_id: String

          The unique ID of the shell tool call generated by the model.

        • output: Array[ResponseFunctionShellCallOutputContent]

          Captured chunks of stdout and stderr output, along with their associated outcomes.

          • outcome: Timeout{ type} | Exit{ exit_code, type}

            The exit or timeout outcome associated with this shell call.

            • class Timeout

              Indicates that the shell call exceeded its configured time limit.

              • type: :timeout

                The outcome type. Always timeout.

                • :timeout

            • class Exit

              Indicates that the shell commands finished and returned an exit code.

              • exit_code: Integer

                The exit code returned by the shell process.

              • type: :exit

                The outcome type. Always exit.

                • :exit

          • stderr: String

            Captured stderr output for the shell call.

          • stdout: String

            Captured stdout output for the shell call.

        • type: :shell_call_output

          The type of the item. Always shell_call_output.

          • :shell_call_output

        • id: String

          The unique ID of the shell tool call output. Populated when this item is returned via API.

        • max_output_length: Integer

          The maximum number of UTF-8 characters captured for this shell call's combined output.

        • status: :in_progress | :completed | :incomplete

          The status of the shell call output.

          • :in_progress

          • :completed

          • :incomplete

      • class ApplyPatchCall

        A tool call representing a request to create, delete, or update files using diff patches.

        • call_id: String

          The unique ID of the apply patch tool call generated by the model.

        • operation: CreateFile{ diff, path, type} | DeleteFile{ path, type} | UpdateFile{ diff, path, type}

          The specific create, delete, or update instruction for the apply_patch tool call.

          • class CreateFile

            Instruction for creating a new file via the apply_patch tool.

            • diff: String

              Unified diff content to apply when creating the file.

            • path: String

              Path of the file to create relative to the workspace root.

            • type: :create_file

              The operation type. Always create_file.

              • :create_file

          • class DeleteFile

            Instruction for deleting an existing file via the apply_patch tool.

            • path: String

              Path of the file to delete relative to the workspace root.

            • type: :delete_file

              The operation type. Always delete_file.

              • :delete_file

          • class UpdateFile

            Instruction for updating an existing file via the apply_patch tool.

            • diff: String

              Unified diff content to apply to the existing file.

            • path: String

              Path of the file to update relative to the workspace root.

            • type: :update_file

              The operation type. Always update_file.

              • :update_file

        • status: :in_progress | :completed

          The status of the apply patch tool call. One of in_progress or completed.

          • :in_progress

          • :completed

        • type: :apply_patch_call

          The type of the item. Always apply_patch_call.

          • :apply_patch_call

        • id: String

          The unique ID of the apply patch tool call. Populated when this item is returned via API.

      • class ApplyPatchCallOutput

        The streamed output emitted by an apply patch tool call.

        • call_id: String

          The unique ID of the apply patch tool call generated by the model.

        • status: :completed | :failed

          The status of the apply patch tool call output. One of completed or failed.

          • :completed

          • :failed

        • type: :apply_patch_call_output

          The type of the item. Always apply_patch_call_output.

          • :apply_patch_call_output

        • id: String

          The unique ID of the apply patch tool call output. Populated when this item is returned via API.

        • output: String

          Optional human-readable log text from the apply patch tool (e.g., patch results or errors).

      • class McpListTools

        A list of tools available on an MCP server.

        • id: String

          The unique ID of the list.

        • server_label: String

          The label of the MCP server.

        • tools: Array[Tool{ input_schema, name, annotations, description}]

          The tools available on the server.

          • input_schema: untyped

            The JSON schema describing the tool's input.

          • name: String

            The name of the tool.

          • annotations: untyped

            Additional annotations about the tool.

          • description: String

            The description of the tool.

        • type: :mcp_list_tools

          The type of the item. Always mcp_list_tools.

          • :mcp_list_tools

        • error: String

          Error message if the server could not list tools.

      • class McpApprovalRequest

        A request for human approval of a tool invocation.

        • id: String

          The unique ID of the approval request.

        • arguments: String

          A JSON string of arguments for the tool.

        • name: String

          The name of the tool to run.

        • server_label: String

          The label of the MCP server making the request.

        • type: :mcp_approval_request

          The type of the item. Always mcp_approval_request.

          • :mcp_approval_request

      • class McpApprovalResponse

        A response to an MCP approval request.

        • approval_request_id: String

          The ID of the approval request being answered.

        • approve: bool

          Whether the request was approved.

        • type: :mcp_approval_response

          The type of the item. Always mcp_approval_response.

          • :mcp_approval_response

        • id: String

          The unique ID of the approval response

        • reason: String

          Optional reason for the decision.

      • class McpCall

        An invocation of a tool on an MCP server.

        • id: String

          The unique ID of the tool call.

        • arguments: String

          A JSON string of the arguments passed to the tool.

        • name: String

          The name of the tool that was run.

        • server_label: String

          The label of the MCP server running the tool.

        • type: :mcp_call

          The type of the item. Always mcp_call.

          • :mcp_call

        • approval_request_id: String

          Unique identifier for the MCP tool call approval request. Include this value in a subsequent mcp_approval_response input to approve or reject the corresponding tool call.

        • error: String

          The error from the tool call, if any.

        • output: String

          The output from the tool call.

        • status: :in_progress | :completed | :incomplete | 2 more

          The status of the tool call. One of in_progress, completed, incomplete, calling, or failed.

          • :in_progress

          • :completed

          • :incomplete

          • :calling

          • :failed

      • class ResponseCustomToolCallOutput

        The output of a custom tool call from your code, being sent back to the model.

        • call_id: String

          The call ID, used to map this custom tool call output to a custom tool call.

        • output: String | Array[ResponseInputText | ResponseInputImage | ResponseInputFile]

          The output from the custom tool call generated by your code. Can be a string or an list of output content.

          • String = String

            A string of the output of the custom tool call.

          • OutputContentList = Array[ResponseInputText | ResponseInputImage | ResponseInputFile]

            Text, image, or file output of the custom tool call.

            • class ResponseInputText

              A text input to the model.

            • class ResponseInputImage

              An image input to the model. Learn about image inputs.

            • class ResponseInputFile

              A file input to the model.

        • type: :custom_tool_call_output

          The type of the custom tool call output. Always custom_tool_call_output.

          • :custom_tool_call_output

        • id: String

          The unique ID of the custom tool call output in the OpenAI platform.

      • class ResponseCustomToolCall

        A call to a custom tool created by the model.

        • call_id: String

          An identifier used to map this custom tool call to a tool call output.

        • input: String

          The input for the custom tool call generated by the model.

        • name: String

          The name of the custom tool being called.

        • type: :custom_tool_call

          The type of the custom tool call. Always custom_tool_call.

          • :custom_tool_call

        • id: String

          The unique ID of the custom tool call in the OpenAI platform.

        • namespace: String

          The namespace of the custom tool being called.

      • class CompactionTrigger

        Compacts the current context. Must be the final input item.

        • type: :compaction_trigger

          The type of the item. Always compaction_trigger.

          • :compaction_trigger

      • class ItemReference

        An internal identifier for an item to reference.

        • id: String

          The ID of the item to reference.

        • type: :item_reference

          The type of item to reference. Always item_reference.

          • :item_reference

  • metadata: Metadata

    Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard.

    Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters.

  • model: ResponsesModel

    Model ID used to generate the response, like gpt-4o or o3. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the model guide to browse and compare available models.

    • String = String

    • ChatModel = :"gpt-5.4" | :"gpt-5.4-mini" | :"gpt-5.4-nano" | 75 more

      • :"gpt-5.4"

      • :"gpt-5.4-mini"

      • :"gpt-5.4-nano"

      • :"gpt-5.4-mini-2026-03-17"

      • :"gpt-5.4-nano-2026-03-17"

      • :"gpt-5.3-chat-latest"

      • :"gpt-5.2"

      • :"gpt-5.2-2025-12-11"

      • :"gpt-5.2-chat-latest"

      • :"gpt-5.2-pro"

      • :"gpt-5.2-pro-2025-12-11"

      • :"gpt-5.1"

      • :"gpt-5.1-2025-11-13"

      • :"gpt-5.1-codex"

      • :"gpt-5.1-mini"

      • :"gpt-5.1-chat-latest"

      • :"gpt-5"

      • :"gpt-5-mini"

      • :"gpt-5-nano"

      • :"gpt-5-2025-08-07"

      • :"gpt-5-mini-2025-08-07"

      • :"gpt-5-nano-2025-08-07"

      • :"gpt-5-chat-latest"

      • :"gpt-4.1"

      • :"gpt-4.1-mini"

      • :"gpt-4.1-nano"

      • :"gpt-4.1-2025-04-14"

      • :"gpt-4.1-mini-2025-04-14"

      • :"gpt-4.1-nano-2025-04-14"

      • :"o4-mini"

      • :"o4-mini-2025-04-16"

      • :o3

      • :"o3-2025-04-16"

      • :"o3-mini"

      • :"o3-mini-2025-01-31"

      • :o1

      • :"o1-2024-12-17"

      • :"o1-preview"

      • :"o1-preview-2024-09-12"

      • :"o1-mini"

      • :"o1-mini-2024-09-12"

      • :"gpt-4o"

      • :"gpt-4o-2024-11-20"

      • :"gpt-4o-2024-08-06"

      • :"gpt-4o-2024-05-13"

      • :"gpt-4o-audio-preview"

      • :"gpt-4o-audio-preview-2024-10-01"

      • :"gpt-4o-audio-preview-2024-12-17"

      • :"gpt-4o-audio-preview-2025-06-03"

      • :"gpt-4o-mini-audio-preview"

      • :"gpt-4o-mini-audio-preview-2024-12-17"

      • :"gpt-4o-search-preview"

      • :"gpt-4o-mini-search-preview"

      • :"gpt-4o-search-preview-2025-03-11"

      • :"gpt-4o-mini-search-preview-2025-03-11"

      • :"chatgpt-4o-latest"

      • :"codex-mini-latest"

      • :"gpt-4o-mini"

      • :"gpt-4o-mini-2024-07-18"

      • :"gpt-4-turbo"

      • :"gpt-4-turbo-2024-04-09"

      • :"gpt-4-0125-preview"

      • :"gpt-4-turbo-preview"

      • :"gpt-4-1106-preview"

      • :"gpt-4-vision-preview"

      • :"gpt-4"

      • :"gpt-4-0314"

      • :"gpt-4-0613"

      • :"gpt-4-32k"

      • :"gpt-4-32k-0314"

      • :"gpt-4-32k-0613"

      • :"gpt-3.5-turbo"

      • :"gpt-3.5-turbo-16k"

      • :"gpt-3.5-turbo-0301"

      • :"gpt-3.5-turbo-0613"

      • :"gpt-3.5-turbo-1106"

      • :"gpt-3.5-turbo-0125"

      • :"gpt-3.5-turbo-16k-0613"

    • ResponsesOnlyModel = :"o1-pro" | :"o1-pro-2025-03-19" | :"o3-pro" | 11 more

      • :"o1-pro"

      • :"o1-pro-2025-03-19"

      • :"o3-pro"

      • :"o3-pro-2025-06-10"

      • :"o3-deep-research"

      • :"o3-deep-research-2025-06-26"

      • :"o4-mini-deep-research"

      • :"o4-mini-deep-research-2025-06-26"

      • :"computer-use-preview"

      • :"computer-use-preview-2025-03-11"

      • :"gpt-5-codex"

      • :"gpt-5-pro"

      • :"gpt-5-pro-2025-10-06"

      • :"gpt-5.1-codex-max"

  • object: :response

    The object type of this resource - always set to response.

    • :response

  • output: Array[ResponseOutputItem]

    An array of content items generated by the model.

    • The length and order of items in the output array is dependent on the model's response.

    • Rather than accessing the first item in the output array and assuming it's an assistant message with the content generated by the model, you might consider using the output_text property where supported in SDKs.

    • class ResponseOutputMessage

      An output message from the model.

    • class ResponseFileSearchToolCall

      The results of a file search tool call. See the file search guide for more information.

    • class ResponseFunctionToolCall

      A tool call to run a function. See the function calling guide for more information.

    • class ResponseFunctionToolCallOutputItem

      • id: String

        The unique ID of the function call tool output.

      • call_id: String

        The unique ID of the function tool call generated by the model.

      • output: String | Array[ResponseInputText | ResponseInputImage | ResponseInputFile]

        The output from the function call generated by your code. Can be a string or an list of output content.

        • String = String

          A string of the output of the function call.

        • OutputContentList = Array[ResponseInputText | ResponseInputImage | ResponseInputFile]

          Text, image, or file output of the function call.

          • class ResponseInputText

            A text input to the model.

          • class ResponseInputImage

            An image input to the model. Learn about image inputs.

          • class ResponseInputFile

            A file input to the model.

      • status: :in_progress | :completed | :incomplete

        The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

        • :in_progress

        • :completed

        • :incomplete

      • type: :function_call_output

        The type of the function tool call output. Always function_call_output.

        • :function_call_output

      • created_by: String

        The identifier of the actor that created the item.

    • class ResponseFunctionWebSearch

      The results of a web search tool call. See the web search guide for more information.

    • class ResponseComputerToolCall

      A tool call to a computer use tool. See the computer use guide for more information.

    • class ResponseComputerToolCallOutputItem

      • id: String

        The unique ID of the computer call tool output.

      • call_id: String

        The ID of the computer tool call that produced the output.

      • output: ResponseComputerToolCallOutputScreenshot

        A computer screenshot image used with the computer use tool.

      • status: :completed | :incomplete | :failed | :in_progress

        The status of the message input. One of in_progress, completed, or incomplete. Populated when input items are returned via API.

        • :completed

        • :incomplete

        • :failed

        • :in_progress

      • type: :computer_call_output

        The type of the computer tool call output. Always computer_call_output.

        • :computer_call_output

      • acknowledged_safety_checks: Array[AcknowledgedSafetyCheck{ id, code, message}]

        The safety checks reported by the API that have been acknowledged by the developer.

        • id: String

          The ID of the pending safety check.

        • code: String

          The type of the pending safety check.

        • message: String

          Details about the pending safety check.

      • created_by: String

        The identifier of the actor that created the item.

    • class ResponseReasoningItem

      A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your input to the Responses API for subsequent turns of a conversation if you are manually managing context.

    • class ResponseToolSearchCall

      • id: String

        The unique ID of the tool search call item.

      • arguments: untyped

        Arguments used for the tool search call.

      • call_id: String

        The unique ID of the tool search call generated by the model.

      • execution: :server | :client

        Whether tool search was executed by the server or by the client.

        • :server

        • :client

      • status: :in_progress | :completed | :incomplete

        The status of the tool search call item that was recorded.

        • :in_progress

        • :completed

        • :incomplete

      • type: :tool_search_call

        The type of the item. Always tool_search_call.

        • :tool_search_call

      • created_by: String

        The identifier of the actor that created the item.

    • class ResponseToolSearchOutputItem

      • id: String

        The unique ID of the tool search output item.

      • call_id: String

        The unique ID of the tool search call generated by the model.

      • execution: :server | :client

        Whether tool search was executed by the server or by the client.

        • :server

        • :client

      • status: :in_progress | :completed | :incomplete

        The status of the tool search output item that was recorded.

        • :in_progress

        • :completed

        • :incomplete

      • tools: Array[Tool]

        The loaded tool definitions returned by tool search.

        • class FunctionTool

          Defines a function in your own code the model can choose to call. Learn more about function calling.

        • class FileSearchTool

          A tool that searches for relevant content from uploaded files. Learn more about the file search tool.

        • class ComputerTool

          A tool that controls a virtual computer. Learn more about the computer tool.

        • class ComputerUsePreviewTool

          A tool that controls a virtual computer. Learn more about the computer tool.

        • class WebSearchTool

          Search the Internet for sources related to the prompt. Learn more about the web search tool.

        • class Mcp

          Give the model access to additional tools via remote Model Context Protocol (MCP) servers. Learn more about MCP.

        • class CodeInterpreter

          A tool that runs Python code to help generate a response to a prompt.

        • class ImageGeneration

          A tool that generates images using the GPT image models.

        • class LocalShell

          A tool that allows the model to execute shell commands in a local environment.

        • class FunctionShellTool

          A tool that allows the model to execute shell commands.

        • class CustomTool

          A custom tool that processes input using a specified format. Learn more about custom tools

        • class NamespaceTool

          Groups function/custom tools under a shared namespace.

        • class ToolSearchTool

          Hosted or BYOT tool search configuration for deferred tools.

        • class WebSearchPreviewTool

          This tool searches the web for relevant results to use in a response. Learn more about the web search tool.

        • class ApplyPatchTool

          Allows the assistant to create, delete, or update files using unified diffs.

      • type: :tool_search_output

        The type of the item. Always tool_search_output.

        • :tool_search_output

      • created_by: String

        The identifier of the actor that created the item.

    • class AdditionalTools

      • id: String

        The unique ID of the additional tools item.

      • role: :unknown | :user | :assistant | 5 more

        The role that provided the additional tools.

        • :unknown

        • :user

        • :assistant

        • :system

        • :critic

        • :discriminator

        • :developer

        • :tool

      • tools: Array[Tool]

        The additional tool definitions made available at this item.

        • class FunctionTool

          Defines a function in your own code the model can choose to call. Learn more about function calling.

        • class FileSearchTool

          A tool that searches for relevant content from uploaded files. Learn more about the file search tool.

        • class ComputerTool

          A tool that controls a virtual computer. Learn more about the computer tool.

        • class ComputerUsePreviewTool

          A tool that controls a virtual computer. Learn more about the computer tool.

        • class WebSearchTool

          Search the Internet for sources related to the prompt. Learn more about the web search tool.

        • class Mcp

          Give the model access to additional tools via remote Model Context Protocol (MCP) servers. Learn more about MCP.

        • class CodeInterpreter

          A tool that runs Python code to help generate a response to a prompt.

        • class ImageGeneration

          A tool that generates images using the GPT image models.

        • class LocalShell

          A tool that allows the model to execute shell commands in a local environment.

        • class FunctionShellTool

          A tool that allows the model to execute shell commands.

        • class CustomTool

          A custom tool that processes input using a specified format. Learn more about custom tools

        • class NamespaceTool

          Groups function/custom tools under a shared namespace.

        • class ToolSearchTool

          Hosted or BYOT tool search configuration for deferred tools.

        • class WebSearchPreviewTool

          This tool searches the web for relevant results to use in a response. Learn more about the web search tool.

        • class ApplyPatchTool

          Allows the assistant to create, delete, or update files using unified diffs.

      • type: :additional_tools

        The type of the item. Always additional_tools.

        • :additional_tools

    • class ResponseCompactionItem

      A compaction item generated by the v1/responses/compact API.

      • id: String

        The unique ID of the compaction item.

      • encrypted_content: String

        The encrypted content that was produced by compaction.

      • type: :compaction

        The type of the item. Always compaction.

        • :compaction

      • created_by: String

        The identifier of the actor that created the item.

    • class ImageGenerationCall

      An image generation request made by the model.

      • id: String

        The unique ID of the image generation call.

      • result: String

        The generated image encoded in base64.

      • status: :in_progress | :completed | :generating | :failed

        The status of the image generation call.

        • :in_progress

        • :completed

        • :generating

        • :failed

      • type: :image_generation_call

        The type of the image generation call. Always image_generation_call.

        • :image_generation_call

    • class ResponseCodeInterpreterToolCall

      A tool call to run code.

    • class LocalShellCall

      A tool call to run a command on the local shell.

      • id: String

        The unique ID of the local shell call.

      • action: Action{ command, env, type, 3 more}

        Execute a shell command on the server.

        • command: Array[String]

          The command to run.

        • env: Hash[Symbol, String]

          Environment variables to set for the command.

        • type: :exec

          The type of the local shell action. Always exec.

          • :exec

        • timeout_ms: Integer

          Optional timeout in milliseconds for the command.

        • user: String

          Optional user to run the command as.

        • working_directory: String

          Optional working directory to run the command in.

      • call_id: String

        The unique ID of the local shell tool call generated by the model.

      • status: :in_progress | :completed | :incomplete

        The status of the local shell call.

        • :in_progress

        • :completed

        • :incomplete

      • type: :local_shell_call

        The type of the local shell call. Always local_shell_call.

        • :local_shell_call

    • class LocalShellCallOutput

      The output of a local shell tool call.

      • id: String

        The unique ID of the local shell tool call generated by the model.

      • output: String

        A JSON string of the output of the local shell tool call.

      • type: :local_shell_call_output

        The type of the local shell tool call output. Always local_shell_call_output.

        • :local_shell_call_output

      • status: :in_progress | :completed | :incomplete

        The status of the item. One of in_progress, completed, or incomplete.

        • :in_progress

        • :completed

        • :incomplete

    • class ResponseFunctionShellToolCall

      A tool call that executes one or more shell commands in a managed environment.

      • id: String

        The unique ID of the shell tool call. Populated when this item is returned via API.

      • action: Action{ commands, max_output_length, timeout_ms}

        The shell commands and limits that describe how to run the tool call.

        • commands: Array[String]

        • max_output_length: Integer

          Optional maximum number of characters to return from each command.

        • timeout_ms: Integer

          Optional timeout in milliseconds for the commands.

      • call_id: String

        The unique ID of the shell tool call generated by the model.

      • environment: ResponseLocalEnvironment | ResponseContainerReference

        Represents the use of a local environment to perform shell actions.

        • class ResponseLocalEnvironment

          Represents the use of a local environment to perform shell actions.

          • type: :local

            The environment type. Always local.

            • :local

        • class ResponseContainerReference

          Represents a container created with /v1/containers.

          • container_id: String

          • type: :container_reference

            The environment type. Always container_reference.

            • :container_reference

      • status: :in_progress | :completed | :incomplete

        The status of the shell call. One of in_progress, completed, or incomplete.

        • :in_progress

        • :completed

        • :incomplete

      • type: :shell_call

        The type of the item. Always shell_call.

        • :shell_call

      • created_by: String

        The ID of the entity that created this tool call.

    • class ResponseFunctionShellToolCallOutput

      The output of a shell tool call that was emitted.

      • id: String

        The unique ID of the shell call output. Populated when this item is returned via API.

      • call_id: String

        The unique ID of the shell tool call generated by the model.

      • max_output_length: Integer

        The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output.

      • output: Array[Output{ outcome, stderr, stdout, created_by}]

        An array of shell call output contents

        • outcome: Timeout{ type} | Exit{ exit_code, type}

          Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk.

          • class Timeout

            Indicates that the shell call exceeded its configured time limit.

            • type: :timeout

              The outcome type. Always timeout.

              • :timeout

          • class Exit

            Indicates that the shell commands finished and returned an exit code.

            • exit_code: Integer

              Exit code from the shell process.

            • type: :exit

              The outcome type. Always exit.

              • :exit

        • stderr: String

          The standard error output that was captured.

        • stdout: String

          The standard output that was captured.

        • created_by: String

          The identifier of the actor that created the item.

      • status: :in_progress | :completed | :incomplete

        The status of the shell call output. One of in_progress, completed, or incomplete.

        • :in_progress

        • :completed

        • :incomplete

      • type: :shell_call_output

        The type of the shell call output. Always shell_call_output.

        • :shell_call_output

      • created_by: String

        The identifier of the actor that created the item.

    • class ResponseApplyPatchToolCall

      A tool call that applies file diffs by creating, deleting, or updating files.

      • id: String

        The unique ID of the apply patch tool call. Populated when this item is returned via API.

      • call_id: String

        The unique ID of the apply patch tool call generated by the model.

      • operation: CreateFile{ diff, path, type} | DeleteFile{ path, type} | UpdateFile{ diff, path, type}

        One of the create_file, delete_file, or update_file operations applied via apply_patch.

        • class CreateFile

          Instruction describing how to create a file via the apply_patch tool.

          • diff: String

            Diff to apply.

          • path: String

            Path of the file to create.

          • type: :create_file

            Create a new file with the provided diff.

            • :create_file

        • class DeleteFile

          Instruction describing how to delete a file via the apply_patch tool.

          • path: String

            Path of the file to delete.

          • type: :delete_file

            Delete the specified file.

            • :delete_file

        • class UpdateFile

          Instruction describing how to update a file via the apply_patch tool.

          • diff: String

            Diff to apply.

          • path: String

            Path of the file to update.

          • type: :update_file

            Update an existing file with the provided diff.

            • :update_file

      • status: :in_progress | :completed

        The status of the apply patch tool call. One of in_progress or completed.

        • :in_progress

        • :completed

      • type: :apply_patch_call

        The type of the item. Always apply_patch_call.

        • :apply_patch_call

      • created_by: String

        The ID of the entity that created this tool call.

    • class ResponseApplyPatchToolCallOutput

      The output emitted by an apply patch tool call.

      • id: String

        The unique ID of the apply patch tool call output. Populated when this item is returned via API.

      • call_id: String

        The unique ID of the apply patch tool call generated by the model.

      • status: :completed | :failed

        The status of the apply patch tool call output. One of completed or failed.

        • :completed

        • :failed

      • type: :apply_patch_call_output

        The type of the item. Always apply_patch_call_output.

        • :apply_patch_call_output

      • created_by: String

        The ID of the entity that created this tool call output.

      • output: String

        Optional textual output returned by the apply patch tool.

    • class McpCall

      An invocation of a tool on an MCP server.

      • id: String

        The unique ID of the tool call.

      • arguments: String

        A JSON string of the arguments passed to the tool.

      • name: String

        The name of the tool that was run.

      • server_label: String

        The label of the MCP server running the tool.

      • type: :mcp_call

        The type of the item. Always mcp_call.

        • :mcp_call

      • approval_request_id: String

        Unique identifier for the MCP tool call approval request. Include this value in a subsequent mcp_approval_response input to approve or reject the corresponding tool call.

      • error: String

        The error from the tool call, if any.

      • output: String

        The output from the tool call.

      • status: :in_progress | :completed | :incomplete | 2 more

        The status of the tool call. One of in_progress, completed, incomplete, calling, or failed.

        • :in_progress

        • :completed

        • :incomplete

        • :calling

        • :failed

    • class McpListTools

      A list of tools available on an MCP server.

      • id: String

        The unique ID of the list.

      • server_label: String

        The label of the MCP server.

      • tools: Array[Tool{ input_schema, name, annotations, description}]

        The tools available on the server.

        • input_schema: untyped

          The JSON schema describing the tool's input.

        • name: String

          The name of the tool.

        • annotations: untyped

          Additional annotations about the tool.

        • description: String

          The description of the tool.

      • type: :mcp_list_tools

        The type of the item. Always mcp_list_tools.

        • :mcp_list_tools

      • error: String

        Error message if the server could not list tools.

    • class McpApprovalRequest

      A request for human approval of a tool invocation.

      • id: String

        The unique ID of the approval request.

      • arguments: String

        A JSON string of arguments for the tool.

      • name: String

        The name of the tool to run.

      • server_label: String

        The label of the MCP server making the request.

      • type: :mcp_approval_request

        The type of the item. Always mcp_approval_request.

        • :mcp_approval_request

    • class McpApprovalResponse

      A response to an MCP approval request.

      • id: String

        The unique ID of the approval response

      • approval_request_id: String

        The ID of the approval request being answered.

      • approve: bool

        Whether the request was approved.

      • type: :mcp_approval_response

        The type of the item. Always mcp_approval_response.

        • :mcp_approval_response

      • reason: String

        Optional reason for the decision.

    • class ResponseCustomToolCall

      A call to a custom tool created by the model.

    • class ResponseCustomToolCallOutputItem

      The output of a custom tool call from your code, being sent back to the model.

      • id: String

        The unique ID of the custom tool call output item.

      • status: :in_progress | :completed | :incomplete

        The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

        • :in_progress

        • :completed

        • :incomplete

      • created_by: String

        The identifier of the actor that created the item.

  • parallel_tool_calls: bool

    Whether to allow the model to run tool calls in parallel.

  • temperature: Float

    What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or top_p but not both.

  • tool_choice: ToolChoiceOptions | ToolChoiceAllowed | ToolChoiceTypes | 5 more

    How the model should select which tool (or tools) to use when generating a response. See the tools parameter to see how to specify which tools the model can call.

    • ToolChoiceOptions = :none | :auto | :required

      Controls which (if any) tool is called by the model.

      none means the model will not call any tool and instead generates a message.

      auto means the model can pick between generating a message or calling one or more tools.

      required means the model must call one or more tools.

      • :none

      • :auto

      • :required

    • class ToolChoiceAllowed

      Constrains the tools available to the model to a pre-defined set.

      • mode: :auto | :required

        Constrains the tools available to the model to a pre-defined set.

        auto allows the model to pick from among the allowed tools and generate a message.

        required requires the model to call one or more of the allowed tools.

        • :auto

        • :required

      • tools: Array[Hash[Symbol, untyped]]

        A list of tool definitions that the model should be allowed to call.

        For the Responses API, the list of tool definitions might look like:

        [
          { "type": "function", "name": "get_weather" },
          { "type": "mcp", "server_label": "deepwiki" },
          { "type": "image_generation" }
        ]
        

      • type: :allowed_tools

        Allowed tool configuration type. Always allowed_tools.

        • :allowed_tools

    • class ToolChoiceTypes

      Indicates that the model should use a built-in tool to generate a response. Learn more about built-in tools.

      • type: :file_search | :web_search_preview | :computer | 5 more

        The type of hosted tool the model should to use. Learn more about built-in tools.

        Allowed values are:

        • file_search

        • web_search_preview

        • computer

        • computer_use_preview

        • computer_use

        • code_interpreter

        • image_generation

        • :file_search

        • :web_search_preview

        • :computer

        • :computer_use_preview

        • :computer_use

        • :web_search_preview_2025_03_11

        • :image_generation

        • :code_interpreter

    • class ToolChoiceFunction

      Use this option to force the model to call a specific function.

      • name: String

        The name of the function to call.

      • type: :function

        For function calling, the type is always function.

        • :function

    • class ToolChoiceMcp

      Use this option to force the model to call a specific tool on a remote MCP server.

      • server_label: String

        The label of the MCP server to use.

      • type: :mcp

        For MCP tools, the type is always mcp.

        • :mcp

      • name: String

        The name of the tool to call on the server.

    • class ToolChoiceCustom

      Use this option to force the model to call a specific custom tool.

      • name: String

        The name of the custom tool to call.

      • type: :custom

        For custom tool calling, the type is always custom.

        • :custom

    • class ToolChoiceApplyPatch

      Forces the model to call the apply_patch tool when executing a tool call.

      • type: :apply_patch

        The tool to call. Always apply_patch.

        • :apply_patch

    • class ToolChoiceShell

      Forces the model to call the shell tool when a tool call is required.

      • type: :shell

        The tool to call. Always shell.

        • :shell

  • tools: Array[Tool]

    An array of tools the model may call while generating a response. You can specify which tool to use by setting the tool_choice parameter.

    We support the following categories of tools:

    • Built-in tools: Tools that are provided by OpenAI that extend the model's capabilities, like web search or file search. Learn more about built-in tools.

    • MCP Tools: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about MCP Tools.

    • Function calls (custom tools): Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about function calling. You can also use custom tools to call your own code.

    • class FunctionTool

      Defines a function in your own code the model can choose to call. Learn more about function calling.

    • class FileSearchTool

      A tool that searches for relevant content from uploaded files. Learn more about the file search tool.

    • class ComputerTool

      A tool that controls a virtual computer. Learn more about the computer tool.

    • class ComputerUsePreviewTool

      A tool that controls a virtual computer. Learn more about the computer tool.

    • class WebSearchTool

      Search the Internet for sources related to the prompt. Learn more about the web search tool.

    • class Mcp

      Give the model access to additional tools via remote Model Context Protocol (MCP) servers. Learn more about MCP.

    • class CodeInterpreter

      A tool that runs Python code to help generate a response to a prompt.

    • class ImageGeneration

      A tool that generates images using the GPT image models.

    • class LocalShell

      A tool that allows the model to execute shell commands in a local environment.

    • class FunctionShellTool

      A tool that allows the model to execute shell commands.

    • class CustomTool

      A custom tool that processes input using a specified format. Learn more about custom tools

    • class NamespaceTool

      Groups function/custom tools under a shared namespace.

    • class ToolSearchTool

      Hosted or BYOT tool search configuration for deferred tools.

    • class WebSearchPreviewTool

      This tool searches the web for relevant results to use in a response. Learn more about the web search tool.

    • class ApplyPatchTool

      Allows the assistant to create, delete, or update files using unified diffs.

  • top_p: Float

    An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered.

    We generally recommend altering this or temperature but not both.

  • background: bool

    Whether to run the model response in the background. Learn more.

  • completed_at: Float

    Unix timestamp (in seconds) of when this Response was completed. Only present when the status is completed.

  • conversation: Conversation{ id}

    The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation.

    • id: String

      The unique ID of the conversation that this response was associated with.

  • max_output_tokens: Integer

    An upper bound for the number of tokens that can be generated for a response, including visible output tokens and reasoning tokens.

  • max_tool_calls: Integer

    The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored.

  • moderation: Moderation{ input, output}

    Moderation results for the response input and output, if moderated completions were requested.

    • input: ModerationResult{ categories, category_applied_input_types, category_scores, 3 more} | Error{ code, message, type}

      Moderation for the response input.

      • class ModerationResult

        A moderation result produced for the response input or output.

        • categories: Hash[Symbol, bool]

          A dictionary of moderation categories to booleans, True if the input is flagged under this category.

        • category_applied_input_types: Hash[Symbol, Array[:text | :image]]

          Which modalities of input are reflected by the score for each category.

          • :text

          • :image

        • category_scores: Hash[Symbol, Float]

          A dictionary of moderation categories to scores.

        • flagged: bool

          A boolean indicating whether the content was flagged by any category.

        • model: String

          The moderation model that produced this result.

        • type: :moderation_result

          The object type, which was always moderation_result for successful moderation results.

          • :moderation_result

      • class Error

        An error produced while attempting moderation for the response input or output.

        • code: String

          The error code.

        • message: String

          The error message.

        • type: :error

          The object type, which was always error for moderation failures.

          • :error

    • output: ModerationResult{ categories, category_applied_input_types, category_scores, 3 more} | Error{ code, message, type}

      Moderation for the response output.

      • class ModerationResult

        A moderation result produced for the response input or output.

        • categories: Hash[Symbol, bool]

          A dictionary of moderation categories to booleans, True if the input is flagged under this category.

        • category_applied_input_types: Hash[Symbol, Array[:text | :image]]

          Which modalities of input are reflected by the score for each category.

          • :text

          • :image

        • category_scores: Hash[Symbol, Float]

          A dictionary of moderation categories to scores.

        • flagged: bool

          A boolean indicating whether the content was flagged by any category.

        • model: String

          The moderation model that produced this result.

        • type: :moderation_result

          The object type, which was always moderation_result for successful moderation results.

          • :moderation_result

      • class Error

        An error produced while attempting moderation for the response input or output.

        • code: String

          The error code.

        • message: String

          The error message.

        • type: :error

          The object type, which was always error for moderation failures.

          • :error

  • previous_response_id: String

    The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about conversation state. Cannot be used in conjunction with conversation.

  • prompt: ResponsePrompt

    Reference to a prompt template and its variables. Learn more.

    • id: String

      The unique identifier of the prompt template to use.

    • variables: Hash[Symbol, String | ResponseInputText | ResponseInputImage | ResponseInputFile]

      Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files.

      • String = String

      • class ResponseInputText

        A text input to the model.

      • class ResponseInputImage

        An image input to the model. Learn about image inputs.

      • class ResponseInputFile

        A file input to the model.

    • version: String

      Optional version of the prompt template.

  • prompt_cache_key: String

    Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the user field. Learn more.

  • prompt_cache_retention: :in_memory | :"24h"

    The retention policy for the prompt cache. Set to 24h to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. Learn more. For gpt-5.5, gpt-5.5-pro, and future models, only 24h is supported.

    For older models that support both in_memory and 24h, the default depends on your organization's data retention policy:

    • Organizations without ZDR enabled default to 24h.

    • Organizations with ZDR enabled default to in_memory when prompt_cache_retention is not specified.

    • :in_memory

    • :"24h"

  • reasoning: Reasoning

    gpt-5 and o-series models only

    Configuration options for reasoning models.

    • effort: ReasoningEffort

      Constrains effort on reasoning for reasoning models. Currently supported values are none, minimal, low, medium, high, and xhigh. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response.

      • gpt-5.1 defaults to none, which does not perform reasoning. The supported reasoning values for gpt-5.1 are none, low, medium, and high. Tool calls are supported for all reasoning values in gpt-5.1.

      • All models before gpt-5.1 default to medium reasoning effort, and do not support none.

      • The gpt-5-pro model defaults to (and only supports) high reasoning effort.

      • xhigh is supported for all models after gpt-5.1-codex-max.

      • :none

      • :minimal

      • :low

      • :medium

      • :high

      • :xhigh

    • generate_summary: :auto | :concise | :detailed

      Deprecated: use summary instead.

      A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of auto, concise, or detailed.

      • :auto

      • :concise

      • :detailed

    • summary: :auto | :concise | :detailed

      A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of auto, concise, or detailed.

      concise is supported for computer-use-preview models and all reasoning models after gpt-5.

      • :auto

      • :concise

      • :detailed

  • safety_identifier: String

    A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. Learn more.

  • service_tier: :auto | :default | :flex | 2 more

    Specifies the processing type used for serving the request.

    • If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'.
    • If set to 'default', then the request will be processed with the standard pricing and performance for the selected model.
    • If set to 'flex' or 'priority', then the request will be processed with the corresponding service tier.
    • When not set, the default behavior is 'auto'.

    When the service_tier parameter is set, the response body will include the service_tier value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter.

    • :auto

    • :default

    • :flex

    • :scale

    • :priority

  • status: ResponseStatus

    The status of the response generation. One of completed, failed, in_progress, cancelled, queued, or incomplete.

    • :completed

    • :failed

    • :in_progress

    • :cancelled

    • :queued

    • :incomplete

  • text: ResponseTextConfig

    Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more:

    • Text inputs and outputs

    • Structured Outputs

    • format_: ResponseFormatTextConfig

      An object specifying the format that the model must output.

      Configuring { "type": "json_schema" } enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the Structured Outputs guide.

      The default format is { "type": "text" } with no additional options.

      Not recommended for gpt-4o and newer models:

      Setting to { "type": "json_object" } enables the older JSON mode, which ensures the message the model generates is valid JSON. Using json_schema is preferred for models that support it.

      • class ResponseFormatText

        Default response format. Used to generate text responses.

        • type: :text

          The type of response format being defined. Always text.

          • :text

      • class ResponseFormatTextJSONSchemaConfig

        JSON Schema response format. Used to generate structured JSON responses. Learn more about Structured Outputs.

        • name: String

          The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64.

        • schema: Hash[Symbol, untyped]

          The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas here.

        • type: :json_schema

          The type of response format being defined. Always json_schema.

          • :json_schema

        • description: String

          A description of what the response format is for, used by the model to determine how to respond in the format.

        • strict: bool

          Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the schema field. Only a subset of JSON Schema is supported when strict is true. To learn more, read the Structured Outputs guide.

      • class ResponseFormatJSONObject

        JSON object response format. An older method of generating JSON responses. Using json_schema is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so.

        • type: :json_object

          The type of response format being defined. Always json_object.

          • :json_object

    • verbosity: :low | :medium | :high

      Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are low, medium, and high.

      • :low

      • :medium

      • :high

  • top_logprobs: Integer

    An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested.

  • truncation: :auto | :disabled

    The truncation strategy to use for the model response.

    • auto: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation.

    • disabled (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error.

    • :auto

    • :disabled

  • usage: ResponseUsage

    Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used.

    • input_tokens: Integer

      The number of input tokens.

    • input_tokens_details: InputTokensDetails{ cached_tokens}

      A detailed breakdown of the input tokens.

      • cached_tokens: Integer

        The number of tokens that were retrieved from the cache. More on prompt caching.

    • output_tokens: Integer

      The number of output tokens.

    • output_tokens_details: OutputTokensDetails{ reasoning_tokens}

      A detailed breakdown of the output tokens.

      • reasoning_tokens: Integer

        The number of reasoning tokens.

    • total_tokens: Integer

      The total number of tokens used.

  • user: String

    This field is being replaced by safety_identifier and prompt_cache_key. Use prompt_cache_key instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. Learn more.