OpenAI - Codex Docs Changes 2026-02-19 20:53 UTC → 2026-04-22 18:29 UTC

1# Agent approvals & security

2 

3Codex helps protect your code and data and reduces the risk of misuse.

4 

5This page covers how to operate Codex safely, including sandboxing, approvals,

6 and network access. If you are looking for Codex Security, the product for

7 scanning connected GitHub repositories, see [Codex Security](https://developers.openai.com/codex/security).

8 

9By default, the agent runs with network access turned off. Locally, Codex uses an OS-enforced sandbox that limits what it can touch (typically to the current workspace), plus an approval policy that controls when it must stop and ask you before acting.

10 

11For a high-level explanation of how sandboxing works across the Codex app, IDE

12extension, and CLI, see [sandboxing](https://developers.openai.com/codex/concepts/sandboxing).

13For a broader enterprise security overview, see the [Codex security white paper](https://trust.openai.com/?itemUid=382f924d-54f3-43a8-a9df-c39e6c959958&source=click).

14 

15## Sandbox and approvals

16 

17Codex security controls come from two layers that work together:

18 

19- **Sandbox mode**: What Codex can do technically (for example, where it can write and whether it can reach the network) when it executes model-generated commands.

20- **Approval policy**: When Codex must ask you before it executes an action (for example, leaving the sandbox, using the network, or running commands outside a trusted set).

21 

22Codex uses different sandbox modes depending on where you run it:

23 

24- **Codex cloud**: Runs in isolated OpenAI-managed containers, preventing access to your host system or unrelated data. Uses a two-phase runtime model: setup runs before the agent phase and can access the network to install specified dependencies, then the agent phase runs offline by default unless you enable internet access for that environment. Secrets configured for cloud environments are available only during setup and are removed before the agent phase starts.

25- **Codex CLI / IDE extension**: OS-level mechanisms enforce sandbox policies. Defaults include no network access and write permissions limited to the active workspace. You can configure the sandbox, approval policy, and network settings based on your risk tolerance.

26 

27In the `Auto` preset (for example, `--full-auto`), Codex can read files, make edits, and run commands in the working directory automatically.

28 

29Codex asks for approval to edit files outside the workspace or to run commands that require network access. If you want to chat or plan without making changes, switch to `read-only` mode with the `/permissions` command.

30 

31Codex can also elicit approval for app (connector) tool calls that advertise side effects, even when the action isn't a shell command or file change. Destructive app/MCP tool calls always require approval when the tool advertises a destructive annotation, even if it also advertises other hints (for example, read-only hints).

32 

33## Network access [Elevated Risk](https://help.openai.com/articles/20001061)

34 

35For Codex cloud, see [agent internet access](https://developers.openai.com/codex/cloud/internet-access) to enable full internet access or a domain allow list.

36 

37For the Codex app, CLI, or IDE Extension, the default `workspace-write` sandbox mode keeps network access turned off unless you enable it in your configuration:

38 

39```toml

40[sandbox_workspace_write]

41network_access = true

42```

43 

44You can also control the [web search tool](https://platform.openai.com/docs/guides/tools-web-search) without granting full network access to spawned commands. Codex defaults to using a web search cache to access results. The cache is an OpenAI-maintained index of web results, so cached mode returns pre-indexed results instead of fetching live pages. This reduces exposure to prompt injection from arbitrary live content, but you should still treat web results as untrusted. If you are using `--yolo` or another [full access sandbox setting](#common-sandbox-and-approval-combinations), web search defaults to live results. Use `--search` or set `web_search = "live"` to allow live browsing, or set it to `"disabled"` to turn the tool off:

45 

46```toml

47web_search = "cached" # default

48# web_search = "disabled"

49# web_search = "live" # same as --search

50```

51 

52Use caution when enabling network access or web search in Codex. Prompt injection can cause the agent to fetch and follow untrusted instructions.

53 

54## Defaults and recommendations

55 

56- On launch, Codex detects whether the folder is version-controlled and recommends:

57 - Version-controlled folders: `Auto` (workspace write + on-request approvals)

58 - Non-version-controlled folders: `read-only`

59- Depending on your setup, Codex may also start in `read-only` until you explicitly trust the working directory (for example, via an onboarding prompt or `/permissions`).

60- The workspace includes the current directory and temporary directories like `/tmp`. Use the `/status` command to see which directories are in the workspace.

61- To accept the defaults, run `codex`.

62- You can set these explicitly:

63 - `codex --sandbox workspace-write --ask-for-approval on-request`

64 - `codex --sandbox read-only --ask-for-approval on-request`

65 

66### Protected paths in writable roots

67 

68In the default `workspace-write` sandbox policy, writable roots still include protected paths:

69 

70- `<writable_root>/.git` is protected as read-only whether it appears as a directory or file.

71- If `<writable_root>/.git` is a pointer file (`gitdir: ...`), the resolved Git directory path is also protected as read-only.

72- `<writable_root>/.agents` is protected as read-only when it exists as a directory.

73- `<writable_root>/.codex` is protected as read-only when it exists as a directory.

74- Protection is recursive, so everything under those paths is read-only.

75 

76### Deny reads with filesystem profiles

77 

78Named permission profiles can also deny reads for exact paths or glob patterns.

79This is useful when a workspace should stay writable but specific sensitive

80files, such as local environment files, must stay unreadable:

81 

82```toml

83default_permissions = "workspace"

84 

85[permissions.workspace.filesystem]

86":project_roots" = { "." = "write", "**/*.env" = "none" }

87glob_scan_max_depth = 3

88```

89 

90Use `"none"` for paths or globs that Codex shouldn't read. The sandbox policy

91evaluates globs for local macOS and Linux command execution. On platforms that

92pre-expand glob matches before the sandbox starts, set `glob_scan_max_depth` for

93unbounded `**` patterns, or list explicit depths such as `*.env`, `*/*.env`, and

94`*/*/*.env`.

95 

96### Run without approval prompts

97 

98You can disable approval prompts with `--ask-for-approval never` or `-a never` (shorthand).

99 

100This option works with all `--sandbox` modes, so you still control Codex's level of autonomy. Codex makes a best effort within the constraints you set.

101 

102If you need Codex to read files, make edits, and run commands with network access without approval prompts, use `--sandbox danger-full-access` (or the `--dangerously-bypass-approvals-and-sandbox` flag). Use caution before doing so.

103 

104For a middle ground, `approval_policy = { granular = { ... } }` lets you keep specific approval prompt categories interactive while automatically rejecting others. The granular policy covers sandbox approvals, execpolicy-rule prompts, MCP prompts, `request_permissions` prompts, and skill-script approvals.

105 

106Set `approvals_reviewer = "guardian_subagent"` to route eligible approval reviews through the Guardian reviewer subagent instead of prompting the user directly. Admin requirements can constrain this with `allowed_approvals_reviewers`.

107 

108### Common sandbox and approval combinations

109 

110| Intent | Flags | Effect |

111| ----------------------------------------------------------------- | ------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------ |

112| Auto (preset) | *no flags needed* or `--full-auto` | Codex can read files, make edits, and run commands in the workspace. Codex requires approval to edit outside the workspace or to access network. |

113| Safe read-only browsing | `--sandbox read-only --ask-for-approval on-request` | Codex can read files and answer questions. Codex requires approval to make edits, run commands, or access network. |

114| Read-only non-interactive (CI) | `--sandbox read-only --ask-for-approval never` | Codex can only read files; never asks for approval. |

115| Automatically edit but ask for approval to run untrusted commands | `--sandbox workspace-write --ask-for-approval untrusted` | Codex can read and edit files but asks for approval before running untrusted commands. |

116| Dangerous full access | `--dangerously-bypass-approvals-and-sandbox` (alias: `--yolo`) | [Elevated Risk](https://help.openai.com/articles/20001061) No sandbox; no approvals *(not recommended)* |

117 

118`--full-auto` is a convenience alias for `--sandbox workspace-write --ask-for-approval on-request`.

119 

120With `--ask-for-approval untrusted`, Codex runs only known-safe read operations automatically. Commands that can mutate state or trigger external execution paths (for example, destructive Git operations or Git output/config-override flags) require approval.

121 

122#### Configuration in `config.toml`

123 

124For the broader configuration workflow, see [Config basics](https://developers.openai.com/codex/config-basic), [Advanced Config](https://developers.openai.com/codex/config-advanced#approval-policies-and-sandbox-modes), and the [Configuration Reference](https://developers.openai.com/codex/config-reference).

125 

126```toml

127# Always ask for approval mode

128approval_policy = "untrusted"

129sandbox_mode = "read-only"

130allow_login_shell = false # optional hardening: disallow login shells for shell-based tools

131 

132# Optional: Allow network in workspace-write mode

133[sandbox_workspace_write]

134network_access = true

135 

136# Optional: granular approval policy

137# approval_policy = { granular = {

138# sandbox_approval = true,

139# rules = true,

140# mcp_elicitations = true,

141# request_permissions = false,

142# skill_approval = false

143# } }

144```

145 

146You can also save presets as profiles, then select them with `codex --profile <name>`:

147 

148```toml

149[profiles.full_auto]

150approval_policy = "on-request"

151sandbox_mode = "workspace-write"

152 

153[profiles.readonly_quiet]

154approval_policy = "never"

155sandbox_mode = "read-only"

156```

157 

158### Test the sandbox locally

159 

160To see what happens when a command runs under the Codex sandbox, use these Codex CLI commands:

161 

162```bash

163# macOS

164codex sandbox macos [--full-auto] [--log-denials] [COMMAND]...

165# Linux

166codex sandbox linux [--full-auto] [COMMAND]...

167```

168 

169The `sandbox` command is also available as `codex debug`, and the platform helpers have aliases (for example `codex sandbox seatbelt` and `codex sandbox landlock`).

170 

171## OS-level sandbox

172 

173Codex enforces the sandbox differently depending on your OS:

174 

175- **macOS** uses Seatbelt policies and runs commands using `sandbox-exec` with a profile (`-p`) that corresponds to the `--sandbox` mode you selected. When restricted read access enables platform defaults, Codex appends a curated macOS platform policy (instead of broadly allowing `/System`) to preserve common tool compatibility.

176- **Linux** uses `bwrap` plus `seccomp` by default.

177- **Windows** uses the Linux sandbox implementation when running in [Windows Subsystem for Linux 2 (WSL2)](https://developers.openai.com/codex/windows#windows-subsystem-for-linux). WSL1 was supported through Codex `0.114`; starting in `0.115`, the Linux sandbox moved to `bwrap`, so WSL1 is no longer supported. When running natively on Windows, Codex uses a [Windows sandbox](https://developers.openai.com/codex/windows#windows-sandbox) implementation.

178 

179If you use the Codex IDE extension on Windows, it supports WSL2 directly. Set the following in your VS Code settings to keep the agent inside WSL2 whenever it's available:

180 

181```json

182{

183 "chatgpt.runCodexInWindowsSubsystemForLinux": true

184}

185```

186 

187This ensures the IDE extension inherits Linux sandbox semantics for commands, approvals, and filesystem access even when the host OS is Windows. Learn more in the [Windows setup guide](https://developers.openai.com/codex/windows).

188 

189When running natively on Windows, configure the native sandbox mode in `config.toml`:

190 

191```toml

192[windows]

193sandbox = "unelevated" # or "elevated"

194# sandbox_private_desktop = true # default; set false only for compatibility

195```

196 

197See the [Windows setup guide](https://developers.openai.com/codex/windows#windows-sandbox) for details.

198 

199When you run Linux in a containerized environment such as Docker, the sandbox may not work if the host or container configuration blocks the namespace, setuid `bwrap`, or `seccomp` operations that Codex needs.

200 

201In that case, configure your Docker container to provide the isolation you need, then run `codex` with `--sandbox danger-full-access` (or the `--dangerously-bypass-approvals-and-sandbox` flag) inside the container.

202 

203### Run Codex in Dev Containers

204 

205If your host cannot run the Linux sandbox directly, or if your organization already standardizes on containerized development, run Codex with Dev Containers and let Docker provide the outer isolation boundary. This works with Visual Studio Code Dev Containers and compatible tools.

206 

207Use the [Codex secure devcontainer example](https://github.com/openai/codex/tree/main/.devcontainer) as a reference implementation. The example installs Codex, common development tools, `bubblewrap`, and firewall-based outbound controls.

208 

209Devcontainers provide substantial protection, but they do not prevent every

210 attack. If you run Codex with `--sandbox danger-full-access` or

211 `--dangerously-bypass-approvals-and-sandbox` inside the container, a malicious

212 project can exfiltrate anything available inside the devcontainer, including

213 Codex credentials. Use this pattern only with trusted repositories, and

214 monitor Codex activity as you would in any other elevated environment.

215 

216The reference implementation includes:

217 

218- an Ubuntu 24.04 base image with Codex and common development tools installed;

219- an allowlist-driven firewall profile for outbound access;

220- VS Code settings and extension recommendations for reopening the workspace in a container;

221- persistent mounts for command history and Codex configuration;

222- `bubblewrap`, so Codex can still use its Linux sandbox when the container grants the needed capabilities.

223 

224To try it:

225 

2261. Install Visual Studio Code and the [Dev Containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers).

2272. Copy the Codex example `.devcontainer` setup into your repository, or start from the Codex repository directly.

2283. In VS Code, run **Dev Containers: Open Folder in Container…** and select `.devcontainer/devcontainer.secure.json`.

2294. After the container starts, open a terminal and run `codex`.

230 

231You can also start the container from the CLI:

232 

233```bash

234devcontainer up --workspace-folder . --config .devcontainer/devcontainer.secure.json

235```

236 

237The example has three main pieces:

238 

239- `.devcontainer/devcontainer.secure.json` controls container settings, capabilities, mounts, environment variables, and VS Code extensions.

240- `.devcontainer/Dockerfile.secure` defines the Ubuntu-based image and installed tools.

241- `.devcontainer/init-firewall.sh` applies the outbound network policy.

242 

243The reference firewall is intentionally a starting point. If you depend on domain allowlisting for isolation, implement DNS rebinding and DNS refresh protections that fit your environment, such as TTL-aware refreshes or a DNS-aware firewall.

244 

245Inside the container, choose one of these modes:

246 

247- Keep Codex's Linux sandbox enabled if the Dev Container profile grants the capabilities needed for `bwrap` to create the inner sandbox.

248- If the container is your intended security boundary, run Codex with `--sandbox danger-full-access` inside the container so Codex does not try to create a second sandbox layer.

249 

250## Version control

251 

252Codex works best with a version control workflow:

253 

254- Work on a feature branch and keep `git status` clean before delegating. This keeps Codex patches easier to isolate and revert.

255- Prefer patch-based workflows (for example, `git diff`/`git apply`) over editing tracked files directly. Commit frequently so you can roll back in small increments.

256- Treat Codex suggestions like any other PR: run targeted verification, review diffs, and document decisions in commit messages for auditing.

257 

258## Monitoring and telemetry

259 

260Codex supports opt-in monitoring via OpenTelemetry (OTel) to help teams audit usage, investigate issues, and meet compliance requirements without weakening local security defaults. Telemetry is off by default; enable it explicitly in your configuration.

261 

262### Overview

263 

264- Codex turns off OTel export by default to keep local runs self-contained.

265- When enabled, Codex emits structured log events covering conversations, API requests, SSE/WebSocket stream activity, user prompts (redacted by default), tool approval decisions, and tool results.

266- Codex tags exported events with `service.name` (originator), CLI version, and an environment label to separate dev/staging/prod traffic.

267 

268### Enable OTel (opt-in)

269 

270Add an `[otel]` block to your Codex configuration (typically `~/.codex/config.toml`), choosing an exporter and whether to log prompt text.

271 

272```toml

273[otel]

274environment = "staging" # dev | staging | prod

275exporter = "none" # none | otlp-http | otlp-grpc

276log_user_prompt = false # redact prompt text unless policy allows

277```

278 

279- `exporter = "none"` leaves instrumentation active but doesn't send data anywhere.

280- To send events to your own collector, pick one of:

281 

282```toml

283[otel]

284exporter = { otlp-http = {

285 endpoint = "https://otel.example.com/v1/logs",

286 protocol = "binary",

287 headers = { "x-otlp-api-key" = "${OTLP_TOKEN}" }

288}}

289```

290 

291```toml

292[otel]

293exporter = { otlp-grpc = {

294 endpoint = "https://otel.example.com:4317",

295 headers = { "x-otlp-meta" = "abc123" }

296}}

297```

298 

299Codex batches events and flushes them on shutdown. Codex exports only telemetry produced by its OTel module.

300 

301### Event categories

302 

303Representative event types include:

304 

305- `codex.conversation_starts` (model, reasoning settings, sandbox/approval policy)

306- `codex.api_request` (attempt, status/success, duration, and error details)

307- `codex.sse_event` (stream event kind, success/failure, duration, plus token counts on `response.completed`)

308- `codex.websocket_request` and `codex.websocket_event` (request duration plus per-message kind/success/error)

309- `codex.user_prompt` (length; content redacted unless explicitly enabled)

310- `codex.tool_decision` (approved/denied, source: configuration vs. user)

311- `codex.tool_result` (duration, success, output snippet)

312 

313Associated OTel metrics (counter plus duration histogram pairs) include `codex.api_request`, `codex.sse_event`, `codex.websocket.request`, `codex.websocket.event`, and `codex.tool.call` (with corresponding `.duration_ms` instruments).

314 

315For the full event catalog and configuration reference, see the [Codex configuration documentation on GitHub](https://github.com/openai/codex/blob/main/docs/config.md#otel).

316 

317### Security and privacy guidance

318 

319- Keep `log_user_prompt = false` unless policy explicitly permits storing prompt contents. Prompts can include source code and sensitive data.

320- Route telemetry only to collectors you control; apply retention limits and access controls aligned with your compliance requirements.

321- Treat tool arguments and outputs as sensitive. Favor redaction at the collector or SIEM when possible.

322- Review local data retention settings (for example, `history.persistence` / `history.max_bytes`) if you don't want Codex to save session transcripts under `CODEX_HOME`. See [Advanced Config](https://developers.openai.com/codex/config-advanced#history-persistence) and [Configuration Reference](https://developers.openai.com/codex/config-reference).

323- If you run the CLI with network access turned off, OTel export can't reach your collector. To export, allow network access in `workspace-write` mode for the OTel endpoint, or export from Codex cloud with the collector domain on your approved list.

324- Review events periodically for approval/sandbox changes and unexpected tool executions.

325 

326OTel is optional and designed to complement, not replace, the sandbox and approval protections described above.

327 

328## Managed configuration

329 

330Enterprise admins can configure Codex security settings for their workspace in [Managed configuration](https://developers.openai.com/codex/enterprise/managed-configuration). See that page for setup and policy details.

4 4 

5ChatGPT Plus, Pro, Business, Edu, and Enterprise plans include Codex. Learn more about [what's included](https://developers.openai.com/codex/pricing).5ChatGPT Plus, Pro, Business, Edu, and Enterprise plans include Codex. Learn more about [what's included](https://developers.openai.com/codex/pricing).

6 6 

7![Codex app for Windows showing a project sidebar, active thread, and review pane](/images/codex/windows/codex-windows-light.webp)

8 

7![Codex app window with a project sidebar, active thread, and review pane](/images/codex/app/app-screenshot-light.webp)9![Codex app window with a project sidebar, active thread, and review pane](/images/codex/app/app-screenshot-light.webp)

8 10 

9## Getting started11## Getting started

10 12 

11The Codex app is available on macOS (Apple Silicon).13The Codex app is available on macOS and Windows.

14 

15Most Codex app features are available on both platforms. Platform-specific

16exceptions are noted in the relevant docs.

12 17 

131. Download and install the Codex app181. Download and install the Codex app

14 19 

15 The Codex app is currently only available for macOS.20 Download the Codex app for macOS or Windows. Choose the Intel build if you're using an Intel-based Mac.

21 

22 [Download for macOS (Apple Silicon)](https://persistent.oaistatic.com/codex-app-prod/Codex.dmg)[Download for macOS (Intel)](https://persistent.oaistatic.com/codex-app-prod/Codex-latest-x64.dmg)

23 

24 Need a different operating system?

16 25 

17 [Download for macOS](https://persistent.oaistatic.com/codex-app-prod/Codex.dmg)26 [Download for Windows](https://get.microsoft.com/installer/download/9PLM9XGG6VKS?cid=website_cta_psi)

18 27 

19 [Get notified for Windows and Linux](https://openai.com/form/codex-app/)28 [Get notified for Linux](https://openai.com/form/codex-app/)

202. Open Codex and sign in292. Open Codex and sign in

21 30 

22 Once you downloaded and installed the Codex app, open it and sign in with your ChatGPT account or an OpenAI API key.31 Once you downloaded and installed the Codex app, open it and sign in with your ChatGPT account or an OpenAI API key.

38- Build a classic Snake game in this repo.47- Build a classic Snake game in this repo.

39- Find and fix bugs in my codebase with minimal, high-confidence changes.48- Find and fix bugs in my codebase with minimal, high-confidence changes.

40 49 

41 If you need more inspiration, check out the [explore section](https://developers.openai.com/codex/explore).50 If you need more inspiration, explore [Codex use cases](https://developers.openai.com/codex/use-cases).

51 If you're new to Codex, read the [best practices guide](https://developers.openai.com/codex/learn/best-practices).

42 52 

43---53---

44 54 

46 56 

47[### Multitask across projects57[### Multitask across projects

48 58 

49Run multiple tasks in parallel and switch quickly between them.](https://developers.openai.com/codex/app/features#multitask-across-projects)[### Built-in Git tools59Run project threads side by side and switch between them quickly.](https://developers.openai.com/codex/app/features#multitask-across-projects)[### Worktrees

60 

61Keep parallel code changes isolated with built-in Git worktree support.](https://developers.openai.com/codex/app/worktrees)[### Computer use

62 

63Let Codex use macOS apps for GUI tasks, browser flows, and native app testing.](https://developers.openai.com/codex/app/computer-use)[### Review and ship changes

64 

65Inspect diffs, address PR feedback, stage files, commit, and push.](https://developers.openai.com/codex/app/review)[### Terminal and actions

50 66 

51Review diffs, comment inline, stage or revert chunks, and commit without leaving the app.](https://developers.openai.com/codex/app/features#built-in-git-tools)[### Worktrees for parallel tasks67Run commands in each thread and launch repeatable project actions.](https://developers.openai.com/codex/app/features#integrated-terminal)[### In-app browser

52 68 

53Isolate changes of multiple Codex threads using built-in Git worktree support.](https://developers.openai.com/codex/app/worktrees)[### Skills support69Open unauthenticated local or public pages and comment on rendered output.](https://developers.openai.com/codex/app/browser)[### Image generation

54 70 

55Give your Codex agent additional capabilities and reuse skills across App, CLI, and IDE Extension.](https://developers.openai.com/codex/app/features#skills-support)[### Automations71Generate or edit images in a thread while you work on the surrounding code and assets.](https://developers.openai.com/codex/app/features#image-generation)[### Automations

56 72 

57Pair skills with automations to automate recurring tasks in the background. Codex adds findings to the inbox, or automatically archives runs if there’s nothing to report.](https://developers.openai.com/codex/app/automations)[### Built-in terminal73Schedule recurring tasks, or wake up the same thread for ongoing checks.](https://developers.openai.com/codex/app/automations)[### Skills

58 74 

59Open a terminal per thread to test your changes, run dev servers, scripts, and custom commands.](https://developers.openai.com/codex/app/features#integrated-terminal)[### Local environments75Reuse instructions and workflows across the app, CLI, and IDE Extension.](https://developers.openai.com/codex/app/features#skills-support)[### Sidebar and artifacts

60 76 

61Define worktree setup scripts and common project actions for easy access.](https://developers.openai.com/codex/app/local-environments)[### Sync with the IDE extension77Follow plans, sources, task summaries, and generated file previews.](https://developers.openai.com/codex/app/features#richer-outputs-and-artifacts)[### Plugins

62 78 

63Share Auto Context and active threads across app and IDE sessions.](https://developers.openai.com/codex/app/features#sync-with-the-ide-extension)[### MCP support79Connect apps, skills, and MCP servers to extend what Codex can do.](https://developers.openai.com/codex/plugins)[### IDE Extension sync

64 80 

65Connect your Codex agent to additional services using MCP.](https://developers.openai.com/codex/app/features#mcp-support)81Share Auto Context and active threads across app and IDE sessions.](https://developers.openai.com/codex/app/features#sync-with-the-ide-extension)

66 82 

67---83---

68 84 

12Supported transports:12Supported transports:

13 13 

14- `stdio` (`--listen stdio://`, default): newline-delimited JSON (JSONL).14- `stdio` (`--listen stdio://`, default): newline-delimited JSON (JSONL).

15- `websocket` (`--listen ws://IP:PORT`, experimental): one JSON-RPC message per WebSocket text frame.15- `websocket` (`--listen ws://IP:PORT`, experimental and unsupported): one JSON-RPC message per WebSocket text frame.

16- `off` (`--listen off`): don't expose a local transport.

17 

18When you run with `--listen ws://IP:PORT`, the same listener also serves basic HTTP health probes:

19 

20- `GET /readyz` returns `200 OK` once the listener accepts new connections.

21- `GET /healthz` returns `200 OK` when the request doesn't include an `Origin` header.

22- Requests with an `Origin` header are rejected with `403 Forbidden`.

23 

24WebSocket transport is experimental and unsupported. Loopback listeners such as `ws://127.0.0.1:PORT` are appropriate for localhost and SSH port-forwarding workflows. Non-loopback WebSocket listeners currently allow unauthenticated connections by default during rollout, so configure WebSocket auth before exposing one remotely.

25 

26Supported WebSocket auth flags:

27 

28- `--ws-auth capability-token --ws-token-file /absolute/path`

29- `--ws-auth capability-token --ws-token-sha256 HEX`

30- `--ws-auth signed-bearer-token --ws-shared-secret-file /absolute/path`

31 

32For signed bearer tokens, you can also set `--ws-issuer`, `--ws-audience`, and `--ws-max-clock-skew-seconds`. Clients present the credential as `Authorization: Bearer <token>` during the WebSocket handshake, and app-server enforces auth before JSON-RPC `initialize`.

33 

34Prefer `--ws-token-file` over passing raw bearer tokens on the command line. Use `--ws-token-sha256` only when the client keeps the raw high-entropy token in a separate local secret store; the hash is only a verifier, and clients still need the original token.

16 35 

17In WebSocket mode, app-server uses bounded queues. When request ingress is full, the server rejects new requests with JSON-RPC error code `-32001` and message `"Server overloaded; retry later."` Clients should retry with an exponentially increasing delay and jitter.36In WebSocket mode, app-server uses bounded queues. When request ingress is full, the server rejects new requests with JSON-RPC error code `-32001` and message `"Server overloaded; retry later."` Clients should retry with an exponentially increasing delay and jitter.

18 37 

21Requests include `method`, `params`, and `id`:40Requests include `method`, `params`, and `id`:

22 41 

23```json42```json

24{ "method": "thread/start", "id": 10, "params": { "model": "gpt-5.1-codex" } }43{ "method": "thread/start", "id": 10, "params": { "model": "gpt-5.4" } }

25```44```

26 45 

27Responses echo the `id` with either `result` or `error`:46Responses echo the `id` with either `result` or `error`:

99 },118 },

100});119});

101send({ method: "initialized", params: {} });120send({ method: "initialized", params: {} });

102send({ method: "thread/start", id: 1, params: { model: "gpt-5.1-codex" } });121send({ method: "thread/start", id: 1, params: { model: "gpt-5.4" } });

103```122```

104 123 

105## Core primitives124## Core primitives

116- **Start (or resume) a thread**: Call `thread/start` for a new conversation, `thread/resume` to continue an existing one, or `thread/fork` to branch history into a new thread id.135- **Start (or resume) a thread**: Call `thread/start` for a new conversation, `thread/resume` to continue an existing one, or `thread/fork` to branch history into a new thread id.

117- **Begin a turn**: Call `turn/start` with the target `threadId` and user input. Optional fields override model, personality, `cwd`, sandbox policy, and more.136- **Begin a turn**: Call `turn/start` with the target `threadId` and user input. Optional fields override model, personality, `cwd`, sandbox policy, and more.

118- **Steer an active turn**: Call `turn/steer` to append user input to the currently in-flight turn without creating a new turn.137- **Steer an active turn**: Call `turn/steer` to append user input to the currently in-flight turn without creating a new turn.

119- **Stream events**: After `turn/start`, keep reading notifications on stdout: `item/started`, `item/completed`, `item/agentMessage/delta`, tool progress, and other updates.138- **Stream events**: After `turn/start`, keep reading notifications on stdout: `thread/archived`, `thread/unarchived`, `item/started`, `item/completed`, `item/agentMessage/delta`, tool progress, and other updates.

120- **Finish the turn**: The server emits `turn/completed` with final status when the model finishes or after a `turn/interrupt` cancellation.139- **Finish the turn**: The server emits `turn/completed` with final status when the model finishes or after a `turn/interrupt` cancellation.

121 140 

122## Initialization141## Initialization

123 142 

124Clients must send a single `initialize` request per transport connection before invoking any other method on that connection, then acknowledge with an `initialized` notification. Requests sent before initialization receive a `Not initialized` error, and repeated `initialize` calls on the same connection return `Already initialized`.143Clients must send a single `initialize` request per transport connection before invoking any other method on that connection, then acknowledge with an `initialized` notification. Requests sent before initialization receive a `Not initialized` error, and repeated `initialize` calls on the same connection return `Already initialized`.

125 144 

126The server returns the user agent string it will present to upstream services. Set `clientInfo` to identify your integration.145The server returns the user agent string it will present to upstream services plus `platformFamily` and `platformOs` values that describe the runtime target. Set `clientInfo` to identify your integration.

127 146 

128`initialize.params.capabilities` also supports per-connection notification opt-out via `optOutNotificationMethods`, which is a list of exact method names to suppress for that connection. Matching is exact (no wildcards/prefixes). Unknown method names are accepted and ignored.147`initialize.params.capabilities` also supports per-connection notification opt-out via `optOutNotificationMethods`, which is a list of exact method names to suppress for that connection. Matching is exact (no wildcards/prefixes). Unknown method names are accepted and ignored.

129 148 

159 },178 },

160 "capabilities": {179 "capabilities": {

161 "experimentalApi": true,180 "experimentalApi": true,

162 "optOutNotificationMethods": [181 "optOutNotificationMethods": ["thread/started", "item/agentMessage/delta"]

163 "codex/event/session_configured",

164 "item/agentMessage/delta"

165 ]

166 }182 }

167 }183 }

168}184}

201- `thread/start` - create a new thread; emits `thread/started` and automatically subscribes you to turn/item events for that thread.217- `thread/start` - create a new thread; emits `thread/started` and automatically subscribes you to turn/item events for that thread.

202- `thread/resume` - reopen an existing thread by id so later `turn/start` calls append to it.218- `thread/resume` - reopen an existing thread by id so later `turn/start` calls append to it.

203- `thread/fork` - fork a thread into a new thread id by copying stored history; emits `thread/started` for the new thread.219- `thread/fork` - fork a thread into a new thread id by copying stored history; emits `thread/started` for the new thread.

204- `thread/read` - read a stored thread by id without resuming it; set `includeTurns` to return full turn history.220- `thread/read` - read a stored thread by id without resuming it; set `includeTurns` to return full turn history. Returned `thread` objects include runtime `status`.

205- `thread/list` - page through stored thread logs; supports cursor-based pagination plus `modelProviders`, `sourceKinds`, `archived`, and `cwd` filters.221- `thread/list` - page through stored thread logs; supports cursor-based pagination plus `modelProviders`, `sourceKinds`, `archived`, `cwd`, and `searchTerm` filters. Returned `thread` objects include runtime `status`.

222- `thread/turns/list` - page through a stored thread's turn history without resuming it.

206- `thread/loaded/list` - list the thread ids currently loaded in memory.223- `thread/loaded/list` - list the thread ids currently loaded in memory.

207- `thread/archive` - move a thread’s log file into the archived directory; returns `{}` on success.224- `thread/name/set` - set or update a thread's user-facing name for a loaded thread or a persisted rollout; emits `thread/name/updated`.

208- `thread/unarchive` - restore an archived thread rollout back into the active sessions directory; returns the restored `thread`.225- `thread/metadata/update` - patch SQLite-backed stored thread metadata; currently supports persisted `gitInfo`.

226- `thread/archive` - move a thread's log file into the archived directory; returns `{}` on success and emits `thread/archived`.

227- `thread/unsubscribe` - unsubscribe this connection from thread turn/item events. If this was the last subscriber, the server unloads the thread after a no-subscriber inactivity grace period and emits `thread/closed`.

228- `thread/unarchive` - restore an archived thread rollout back into the active sessions directory; returns the restored `thread` and emits `thread/unarchived`.

229- `thread/status/changed` - notification emitted when a loaded thread's runtime `status` changes.

209- `thread/compact/start` - trigger conversation history compaction for a thread; returns `{}` immediately while progress streams via `turn/*` and `item/*` notifications.230- `thread/compact/start` - trigger conversation history compaction for a thread; returns `{}` immediately while progress streams via `turn/*` and `item/*` notifications.

231- `thread/shellCommand` - run a user-initiated shell command against a thread. This runs outside the sandbox with full access and doesn't inherit the thread sandbox policy.

232- `thread/backgroundTerminals/clean` - stop all running background terminals for a thread (experimental; requires `capabilities.experimentalApi`).

210- `thread/rollback` - drop the last N turns from the in-memory context and persist a rollback marker; returns the updated `thread`.233- `thread/rollback` - drop the last N turns from the in-memory context and persist a rollback marker; returns the updated `thread`.

211- `turn/start` - add user input to a thread and begin Codex generation; responds with the initial `turn` and streams events. For `collaborationMode`, `settings.developer_instructions: null` means "use built-in instructions for the selected mode."234- `turn/start` - add user input to a thread and begin Codex generation; responds with the initial `turn` and streams events. For `collaborationMode`, `settings.developer_instructions: null` means "use built-in instructions for the selected mode."

235- `thread/inject_items` - append raw Responses API items to a loaded thread's model-visible history without starting a user turn.

212- `turn/steer` - append user input to the active in-flight turn for a thread; returns the accepted `turnId`.236- `turn/steer` - append user input to the active in-flight turn for a thread; returns the accepted `turnId`.

213- `turn/interrupt` - request cancellation of an in-flight turn; success is `{}` and the turn ends with `status: "interrupted"`.237- `turn/interrupt` - request cancellation of an in-flight turn; success is `{}` and the turn ends with `status: "interrupted"`.

214- `review/start` - kick off the Codex reviewer for a thread; emits `enteredReviewMode` and `exitedReviewMode` items.238- `review/start` - kick off the Codex reviewer for a thread; emits `enteredReviewMode` and `exitedReviewMode` items.

215- `command/exec` - run a single command under the server sandbox without starting a thread/turn.239- `command/exec` - run a single command under the server sandbox without starting a thread/turn.

240- `command/exec/write` - write `stdin` bytes to a running `command/exec` session or close `stdin`.

241- `command/exec/resize` - resize a running PTY-backed `command/exec` session.

242- `command/exec/terminate` - stop a running `command/exec` session.

243- `command/exec/outputDelta` (notify) - emitted for base64-encoded stdout/stderr chunks from a streaming `command/exec` session.

216- `model/list` - list available models (set `includeHidden: true` to include entries with `hidden: true`) with effort options, optional `upgrade`, and `inputModalities`.244- `model/list` - list available models (set `includeHidden: true` to include entries with `hidden: true`) with effort options, optional `upgrade`, and `inputModalities`.

217- `experimentalFeature/list` - list feature flags with lifecycle stage metadata and cursor pagination.245- `experimentalFeature/list` - list feature flags with lifecycle stage metadata and cursor pagination.

246- `experimentalFeature/enablement/set` - patch in-memory runtime enablement for supported feature keys such as `apps` and `plugins`.

218- `collaborationMode/list` - list collaboration mode presets (experimental, no pagination).247- `collaborationMode/list` - list collaboration mode presets (experimental, no pagination).

219- `skills/list` - list skills for one or more `cwd` values (supports `forceReload` and optional `perCwdExtraUserRoots`).248- `skills/list` - list skills for one or more `cwd` values (supports `forceReload` and optional `perCwdExtraUserRoots`).

249- `skills/changed` (notify) - emitted when watched local skill files change.

250- `marketplace/add` - add a remote plugin marketplace and persist it into the user's marketplace config.

251- `plugin/list` - list discovered plugin marketplaces and plugin state, including install/auth policy metadata, marketplace load errors, featured plugin ids, and local, Git, or remote plugin source metadata.

252- `plugin/read` - read one plugin by marketplace path or remote marketplace name and plugin name, including bundled skills, apps, and MCP server names when those details are available.

253- `plugin/install` - install a plugin from a marketplace path or remote marketplace name.

254- `plugin/uninstall` - uninstall an installed plugin.

220- `app/list` - list available apps (connectors) with pagination plus accessibility/enabled metadata.255- `app/list` - list available apps (connectors) with pagination plus accessibility/enabled metadata.

221- `skills/config/write` - enable or disable skills by path.256- `skills/config/write` - enable or disable skills by path.

222- `mcpServer/oauth/login` - start an OAuth login for a configured MCP server; returns an authorization URL and emits `mcpServer/oauthLogin/completed` on completion.257- `mcpServer/oauth/login` - start an OAuth login for a configured MCP server; returns an authorization URL and emits `mcpServer/oauthLogin/completed` on completion.

223- `tool/requestUserInput` - prompt the user with 1-3 short questions for a tool call (experimental); questions can set `isOther` for a free-form option.258- `tool/requestUserInput` - prompt the user with 1-3 short questions for a tool call (experimental); questions can set `isOther` for a free-form option.

224- `config/mcpServer/reload` - reload MCP server configuration from disk and queue a refresh for loaded threads.259- `config/mcpServer/reload` - reload MCP server configuration from disk and queue a refresh for loaded threads.

225- `mcpServerStatus/list` - list MCP servers, tools, resources, and auth status (cursor + limit pagination).260- `mcpServerStatus/list` - list MCP servers, tools, resources, and auth status (cursor + limit pagination). Use `detail: "full"` for full data or `detail: "toolsAndAuthOnly"` to omit resources.

226- `feedback/upload` - submit a feedback report (classification + optional reason/logs + conversation id).261- `mcpServer/resource/read` - read a single MCP resource through an initialized MCP server.

262- `mcpServer/tool/call` - call a tool on a thread's configured MCP server.

263- `mcpServer/startupStatus/updated` (notify) - emitted when a configured MCP server's startup status changes for a loaded thread.

264- `windowsSandbox/setupStart` - start Windows sandbox setup for `elevated` or `unelevated` mode; returns quickly and later emits `windowsSandbox/setupCompleted`.

265- `feedback/upload` - submit a feedback report (classification + optional reason/logs + conversation id, plus optional `extraLogFiles` attachments).

227- `config/read` - fetch the effective configuration on disk after resolving configuration layering.266- `config/read` - fetch the effective configuration on disk after resolving configuration layering.

267- `externalAgentConfig/detect` - detect external-agent artifacts that can be migrated with `includeHome` and optional `cwds`; each detected item includes `cwd` (`null` for home).

268- `externalAgentConfig/import` - apply selected external-agent migration items by passing explicit `migrationItems` with `cwd` (`null` for home); plugin imports emit `externalAgentConfig/import/completed`.

228- `config/value/write` - write a single configuration key/value to the user's `config.toml` on disk.269- `config/value/write` - write a single configuration key/value to the user's `config.toml` on disk.

229- `config/batchWrite` - apply configuration edits atomically to the user's `config.toml` on disk.270- `config/batchWrite` - apply configuration edits atomically to the user's `config.toml` on disk.

230- `configRequirements/read` - fetch requirements from `requirements.toml` and/or MDM, including allow-lists and residency requirements (or `null` if you haven’t set any up).271- `configRequirements/read` - fetch requirements from `requirements.toml` and/or MDM, including allow-lists, pinned `featureRequirements`, and residency/network requirements (or `null` if you haven't set any up).

272- `fs/readFile`, `fs/writeFile`, `fs/createDirectory`, `fs/getMetadata`, `fs/readDirectory`, `fs/remove`, `fs/copy`, `fs/watch`, `fs/unwatch`, and `fs/changed` (notify) - operate on absolute filesystem paths through the app-server v2 filesystem API.

273 

274Plugin summaries include a `source` union. Local plugins return

275`{ "type": "local", "path": ... }`, Git-backed marketplace entries return

276`{ "type": "git", "url": ..., "path": ..., "refName": ..., "sha": ... }`,

277and remote catalog entries return `{ "type": "remote" }`. For remote-only

278catalog entries, `PluginMarketplaceEntry.path` can be `null`; pass

279`remoteMarketplaceName` instead of `marketplacePath` when reading or installing

280those plugins.

231 281 

232## Models282## Models

233 283 

239{ "method": "model/list", "id": 6, "params": { "limit": 20, "includeHidden": false } }289{ "method": "model/list", "id": 6, "params": { "limit": 20, "includeHidden": false } }

240{ "id": 6, "result": {290{ "id": 6, "result": {

241 "data": [{291 "data": [{

242 "id": "gpt-5.2-codex",292 "id": "gpt-5.4",

243 "model": "gpt-5.2-codex",293 "model": "gpt-5.4",

244 "upgrade": "gpt-5.3-codex",294 "displayName": "GPT-5.4",

245 "displayName": "GPT-5.2 Codex",

246 "hidden": false,295 "hidden": false,

247 "defaultReasoningEffort": "medium",296 "defaultReasoningEffort": "medium",

248 "reasoningEffort": [{297 "supportedReasoningEfforts": [{

249 "effort": "low",298 "reasoningEffort": "low",

250 "description": "Lower latency"299 "description": "Lower latency"

251 }],300 }],

252 "inputModalities": ["text", "image"],301 "inputModalities": ["text", "image"],

259 308 

260Each model entry can include:309Each model entry can include:

261 310 

262- `reasoningEffort` - supported effort options for the model.311- `supportedReasoningEfforts` - supported effort options for the model.

263- `defaultReasoningEffort` - suggested default effort for clients.312- `defaultReasoningEffort` - suggested default effort for clients.

264- `upgrade` - optional recommended upgrade model id for migration prompts in clients.313- `upgrade` - optional recommended upgrade model id for migration prompts in clients.

314- `upgradeInfo` - optional upgrade metadata for migration prompts in clients.

265- `hidden` - whether the model is hidden from the default picker list.315- `hidden` - whether the model is hidden from the default picker list.

266- `inputModalities` - supported input types for the model (for example `text`, `image`).316- `inputModalities` - supported input types for the model (for example `text`, `image`).

267- `supportsPersonality` - whether the model supports personality-specific instructions such as `/personality`.317- `supportsPersonality` - whether the model supports personality-specific instructions such as `/personality`.

296## Threads346## Threads

297 347 

298- `thread/read` reads a stored thread without subscribing to it; set `includeTurns` to include turns.348- `thread/read` reads a stored thread without subscribing to it; set `includeTurns` to include turns.

299- `thread/list` supports cursor pagination plus `modelProviders`, `sourceKinds`, `archived`, and `cwd` filtering.349- `thread/turns/list` pages through a stored thread's turn history without resuming it.

350- `thread/list` supports cursor pagination plus `modelProviders`, `sourceKinds`, `archived`, `cwd`, and `searchTerm` filtering.

300- `thread/loaded/list` returns the thread IDs currently in memory.351- `thread/loaded/list` returns the thread IDs currently in memory.

301- `thread/archive` moves the thread's persisted JSONL log into the archived directory.352- `thread/archive` moves the thread's persisted JSONL log into the archived directory.

353- `thread/metadata/update` patches stored thread metadata, currently including persisted `gitInfo`.

354- `thread/unsubscribe` unsubscribes the current connection from a loaded thread and can trigger `thread/closed` after an inactivity grace period.

302- `thread/unarchive` restores an archived thread rollout back into the active sessions directory.355- `thread/unarchive` restores an archived thread rollout back into the active sessions directory.

303- `thread/compact/start` triggers compaction and returns `{}` immediately.356- `thread/compact/start` triggers compaction and returns `{}` immediately.

304- `thread/rollback` drops the last N turns from the in-memory context and records a rollback marker in the thread's persisted JSONL log.357- `thread/rollback` drops the last N turns from the in-memory context and records a rollback marker in the thread's persisted JSONL log.

358- `thread/inject_items` appends raw Responses API items to a loaded thread's model-visible history without starting a user turn.

305 359 

306### Start or resume a thread360### Start or resume a thread

307 361 

309 363 

310```json364```json

311{ "method": "thread/start", "id": 10, "params": {365{ "method": "thread/start", "id": 10, "params": {

312 "model": "gpt-5.1-codex",366 "model": "gpt-5.4",

313 "cwd": "/Users/me/project",367 "cwd": "/Users/me/project",

314 "approvalPolicy": "never",368 "approvalPolicy": "never",

315 "sandbox": "workspaceWrite",369 "sandbox": "workspaceWrite",

316 "personality": "friendly"370 "personality": "friendly",

371 "serviceName": "my_app_server_client"

317} }372} }

318{ "id": 10, "result": {373{ "id": 10, "result": {

319 "thread": {374 "thread": {

320 "id": "thr_123",375 "id": "thr_123",

321 "preview": "",376 "preview": "",

377 "ephemeral": false,

322 "modelProvider": "openai",378 "modelProvider": "openai",

323 "createdAt": 1730910000379 "createdAt": 1730910000

324 }380 }

326{ "method": "thread/started", "params": { "thread": { "id": "thr_123" } } }382{ "method": "thread/started", "params": { "thread": { "id": "thr_123" } } }

327```383```

328 384 

385`serviceName` is optional. Set it when you want app-server to tag thread-level metrics with your integration's service name.

386 

329To continue a stored session, call `thread/resume` with the `thread.id` you recorded earlier. The response shape matches `thread/start`. You can also pass the same configuration overrides supported by `thread/start`, such as `personality`:387To continue a stored session, call `thread/resume` with the `thread.id` you recorded earlier. The response shape matches `thread/start`. You can also pass the same configuration overrides supported by `thread/start`, such as `personality`:

330 388 

331```json389```json

333 "threadId": "thr_123",391 "threadId": "thr_123",

334 "personality": "friendly"392 "personality": "friendly"

335} }393} }

336{ "id": 11, "result": { "thread": { "id": "thr_123" } } }394{ "id": 11, "result": { "thread": { "id": "thr_123", "name": "Bug bash notes", "ephemeral": false } } }

337```395```

338 396 

339Resuming a thread doesn't update `thread.updatedAt` (or the rollout file's modified time) by itself. The timestamp updates when you start a turn.397Resuming a thread doesn't update `thread.updatedAt` (or the rollout file's modified time) by itself. The timestamp updates when you start a turn.

352{ "method": "thread/started", "params": { "thread": { "id": "thr_456" } } }410{ "method": "thread/started", "params": { "thread": { "id": "thr_456" } } }

353```411```

354 412 

413When a user-facing thread title has been set, app-server hydrates `thread.name` on `thread/list`, `thread/read`, `thread/resume`, `thread/unarchive`, and `thread/rollback` responses. `thread/start` and `thread/fork` may omit `name` (or return `null`) until a title is set later.

414 

355### Read a stored thread (without resuming)415### Read a stored thread (without resuming)

356 416 

357Use `thread/read` when you want stored thread data but don't want to resume the thread or subscribe to its events.417Use `thread/read` when you want stored thread data but don't want to resume the thread or subscribe to its events.

358 418 

359- `includeTurns` - when `true`, the response includes the thread's turns; when `false` or omitted, you get the thread summary only.419- `includeTurns` - when `true`, the response includes the thread's turns; when `false` or omitted, you get the thread summary only.

420- Returned `thread` objects include runtime `status` (`notLoaded`, `idle`, `systemError`, or `active` with `activeFlags`).

360 421 

361```json422```json

362{ "method": "thread/read", "id": 19, "params": { "threadId": "thr_123", "includeTurns": true } }423{ "method": "thread/read", "id": 19, "params": { "threadId": "thr_123", "includeTurns": true } }

363{ "id": 19, "result": { "thread": { "id": "thr_123", "turns": [] } } }424{ "id": 19, "result": { "thread": { "id": "thr_123", "name": "Bug bash notes", "ephemeral": false, "status": { "type": "notLoaded" }, "turns": [] } } }

364```425```

365 426 

366Unlike `thread/resume`, `thread/read` doesn't load the thread into memory or emit `thread/started`.427Unlike `thread/resume`, `thread/read` doesn't load the thread into memory or emit `thread/started`.

367 428 

429### List thread turns

430 

431Use `thread/turns/list` to page a stored thread's turn history without resuming it. Results default to newest-first so clients can fetch older turns with `nextCursor`. The response also includes `backwardsCursor`; pass it as `cursor` with `sortDirection: "asc"` to fetch turns newer than the first item from the earlier page.

432 

433```json

434{ "method": "thread/turns/list", "id": 20, "params": {

435 "threadId": "thr_123",

436 "limit": 50,

437 "sortDirection": "desc"

438} }

439{ "id": 20, "result": {

440 "data": [],

441 "nextCursor": "older-turns-cursor-or-null",

442 "backwardsCursor": "newer-turns-cursor-or-null"

443} }

444```

445 

368### List threads (with pagination & filters)446### List threads (with pagination & filters)

369 447 

370`thread/list` lets you render a history UI. Results default to newest-first by `createdAt`. Filters apply before pagination. Pass any combination of:448`thread/list` lets you render a history UI. Results default to newest-first by `createdAt`. Filters apply before pagination. Pass any combination of:

376- `sourceKinds` - restrict results to specific thread sources. When omitted or `[]`, the server defaults to interactive sources only: `cli` and `vscode`.454- `sourceKinds` - restrict results to specific thread sources. When omitted or `[]`, the server defaults to interactive sources only: `cli` and `vscode`.

377- `archived` - when `true`, list archived threads only. When `false` or omitted, list non-archived threads (default).455- `archived` - when `true`, list archived threads only. When `false` or omitted, list non-archived threads (default).

378- `cwd` - restrict results to threads whose session current working directory exactly matches this path.456- `cwd` - restrict results to threads whose session current working directory exactly matches this path.

457- `searchTerm` - search stored thread summaries and metadata before pagination.

379 458 

380`sourceKinds` accepts the following values:459`sourceKinds` accepts the following values:

381 460 

400} }479} }

401{ "id": 20, "result": {480{ "id": 20, "result": {

402 "data": [481 "data": [

403 { "id": "thr_a", "preview": "Create a TUI", "modelProvider": "openai", "createdAt": 1730831111, "updatedAt": 1730831111 },482 { "id": "thr_a", "preview": "Create a TUI", "ephemeral": false, "modelProvider": "openai", "createdAt": 1730831111, "updatedAt": 1730831111, "name": "TUI prototype", "status": { "type": "notLoaded" } },

404 { "id": "thr_b", "preview": "Fix tests", "modelProvider": "openai", "createdAt": 1730750000, "updatedAt": 1730750000 }483 { "id": "thr_b", "preview": "Fix tests", "ephemeral": true, "modelProvider": "openai", "createdAt": 1730750000, "updatedAt": 1730750000, "status": { "type": "notLoaded" } }

405 ],484 ],

406 "nextCursor": "opaque-token-or-null"485 "nextCursor": "opaque-token-or-null"

407} }486} }

409 488 

410When `nextCursor` is `null`, you have reached the final page.489When `nextCursor` is `null`, you have reached the final page.

411 490 

491### Update stored thread metadata

492 

493Use `thread/metadata/update` to patch stored thread metadata without resuming the thread. Today this supports persisted `gitInfo`; omitted fields are left unchanged, and explicit `null` clears a stored value.

494 

495```json

496{ "method": "thread/metadata/update", "id": 21, "params": {

497 "threadId": "thr_123",

498 "gitInfo": { "branch": "feature/sidebar-pr" }

499} }

500{ "id": 21, "result": {

501 "thread": {

502 "id": "thr_123",

503 "gitInfo": { "sha": null, "branch": "feature/sidebar-pr", "originUrl": null }

504 }

505} }

506```

507 

508### Track thread status changes

509 

510`thread/status/changed` is emitted whenever a loaded thread's runtime status changes. The payload includes `threadId` and the new `status`.

511 

512```json

513{

514 "method": "thread/status/changed",

515 "params": {

516 "threadId": "thr_123",

517 "status": { "type": "active", "activeFlags": ["waitingOnApproval"] }

518 }

519}

520```

521 

412### List loaded threads522### List loaded threads

413 523 

414`thread/loaded/list` returns thread IDs currently loaded in memory.524`thread/loaded/list` returns thread IDs currently loaded in memory.

418{ "id": 21, "result": { "data": ["thr_123", "thr_456"] } }528{ "id": 21, "result": { "data": ["thr_123", "thr_456"] } }

419```529```

420 530 

531### Unsubscribe from a loaded thread

532 

533`thread/unsubscribe` removes the current connection's subscription to a thread. The response status is one of:

534 

535- `unsubscribed` when the connection was subscribed and is now removed.

536- `notSubscribed` when the connection wasn't subscribed to that thread.

537- `notLoaded` when the thread isn't loaded.

538 

539If this was the last subscriber, the server keeps the thread loaded until it has no subscribers and no thread activity for 30 minutes. When the grace period expires, app-server unloads the thread and emits a `thread/status/changed` transition to `notLoaded` plus `thread/closed`.

540 

541```json

542{ "method": "thread/unsubscribe", "id": 22, "params": { "threadId": "thr_123" } }

543{ "id": 22, "result": { "status": "unsubscribed" } }

544```

545 

546If the thread later expires:

547 

548```json

549{ "method": "thread/status/changed", "params": {

550 "threadId": "thr_123",

551 "status": { "type": "notLoaded" }

552} }

553{ "method": "thread/closed", "params": { "threadId": "thr_123" } }

554```

555 

421### Archive a thread556### Archive a thread

422 557 

423Use `thread/archive` to move the persisted thread log (stored as a JSONL file on disk) into the archived sessions directory.558Use `thread/archive` to move the persisted thread log (stored as a JSONL file on disk) into the archived sessions directory.

425```json560```json

426{ "method": "thread/archive", "id": 22, "params": { "threadId": "thr_b" } }561{ "method": "thread/archive", "id": 22, "params": { "threadId": "thr_b" } }

427{ "id": 22, "result": {} }562{ "id": 22, "result": {} }

563{ "method": "thread/archived", "params": { "threadId": "thr_b" } }

428```564```

429 565 

430Archived threads won't appear in future calls to `thread/list` unless you pass `archived: true`.566Archived threads won't appear in future calls to `thread/list` unless you pass `archived: true`.

435 571 

436```json572```json

437{ "method": "thread/unarchive", "id": 24, "params": { "threadId": "thr_b" } }573{ "method": "thread/unarchive", "id": 24, "params": { "threadId": "thr_b" } }

438{ "id": 24, "result": { "thread": { "id": "thr_b" } } }574{ "id": 24, "result": { "thread": { "id": "thr_b", "name": "Bug bash notes" } } }

575{ "method": "thread/unarchived", "params": { "threadId": "thr_b" } }

439```576```

440 577 

441### Trigger thread compaction578### Trigger thread compaction

449{ "id": 25, "result": {} }586{ "id": 25, "result": {} }

450```587```

451 588 

589### Run a thread shell command

590 

591Use `thread/shellCommand` for user-initiated shell commands that belong to a thread. The request returns immediately with `{}` while progress streams through standard `turn/*` and `item/*` notifications.

592 

593This API runs outside the sandbox with full access and doesn't inherit the thread sandbox policy. Clients should expose it only for explicit user-initiated commands.

594 

595If the thread already has an active turn, the command runs as an auxiliary action on that turn and its formatted output is injected into the turn's message stream. If the thread is idle, app-server starts a standalone turn for the shell command.

596 

597```json

598{ "method": "thread/shellCommand", "id": 26, "params": { "threadId": "thr_b", "command": "git status --short" } }

599{ "id": 26, "result": {} }

600```

601 

602### Clean background terminals

603 

604Use `thread/backgroundTerminals/clean` to stop all running background terminals associated with a thread. This method is experimental and requires `capabilities.experimentalApi = true`.

605 

606```json

607{ "method": "thread/backgroundTerminals/clean", "id": 27, "params": { "threadId": "thr_b" } }

608{ "id": 27, "result": {} }

609```

610 

611### Roll back recent turns

612 

613Use `thread/rollback` to remove the last `numTurns` entries from the in-memory context and persist a rollback marker in the rollout log. The returned `thread` includes `turns` populated after the rollback.

614 

615```json

616{ "method": "thread/rollback", "id": 28, "params": { "threadId": "thr_b", "numTurns": 1 } }

617{ "id": 28, "result": { "thread": { "id": "thr_b", "name": "Bug bash notes", "ephemeral": false } } }

618```

619 

452## Turns620## Turns

453 621 

454The `input` field accepts a list of items:622The `input` field accepts a list of items:

478}646}

479```647```

480 648 

649On macOS, `includePlatformDefaults: true` appends a curated platform-default Seatbelt policy for restricted-read sessions. This improves tool compatibility without broadly allowing all of `/System`.

650 

481Examples:651Examples:

482 652 

483```json653```json

510 "writableRoots": ["/Users/me/project"],680 "writableRoots": ["/Users/me/project"],

511 "networkAccess": true681 "networkAccess": true

512 },682 },

513 "model": "gpt-5.1-codex",683 "model": "gpt-5.4",

514 "effort": "medium",684 "effort": "medium",

515 "summary": "concise",685 "summary": "concise",

516 "personality": "friendly",686 "personality": "friendly",

524{ "id": 30, "result": { "turn": { "id": "turn_456", "status": "inProgress", "items": [], "error": null } } }694{ "id": 30, "result": { "turn": { "id": "turn_456", "status": "inProgress", "items": [], "error": null } } }

525```695```

526 696 

697### Inject items into a thread

698 

699Use `thread/inject_items` to append prebuilt Responses API items to a loaded thread's prompt history without starting a user turn. These items are persisted to the rollout and included in subsequent model requests.

700 

701```json

702{ "method": "thread/inject_items", "id": 31, "params": {

703 "threadId": "thr_123",

704 "items": [

705 {

706 "type": "message",

707 "role": "assistant",

708 "content": [{ "type": "output_text", "text": "Previously computed context." }]

709 }

710 ]

711} }

712{ "id": 31, "result": {} }

713```

714 

527### Steer an active turn715### Steer an active turn

528 716 

529Use `turn/steer` to append more user input to the active in-flight turn.717Use `turn/steer` to append more user input to the active in-flight turn.

653- The server rejects empty `command` arrays.841- The server rejects empty `command` arrays.

654- `sandboxPolicy` accepts the same shape used by `turn/start` (for example, `dangerFullAccess`, `readOnly`, `workspaceWrite`, `externalSandbox`).842- `sandboxPolicy` accepts the same shape used by `turn/start` (for example, `dangerFullAccess`, `readOnly`, `workspaceWrite`, `externalSandbox`).

655- When omitted, `timeoutMs` falls back to the server default.843- When omitted, `timeoutMs` falls back to the server default.

844- Set `tty: true` for PTY-backed sessions, and use `processId` when you plan to follow up with `command/exec/write`, `command/exec/resize`, or `command/exec/terminate`.

845- Set `streamStdoutStderr: true` to receive `command/exec/outputDelta` notifications while the command is running.

846 

847### Read admin requirements (`configRequirements/read`)

848 

849Use `configRequirements/read` to inspect the effective admin requirements loaded from `requirements.toml` and/or MDM.

850 

851```json

852{ "method": "configRequirements/read", "id": 52, "params": {} }

853{ "id": 52, "result": {

854 "requirements": {

855 "allowedApprovalPolicies": ["onRequest", "unlessTrusted"],

856 "allowedSandboxModes": ["readOnly", "workspaceWrite"],

857 "featureRequirements": {

858 "personality": true,

859 "unified_exec": false

860 },

861 "network": {

862 "enabled": true,

863 "allowedDomains": ["api.openai.com"],

864 "allowUnixSockets": ["/tmp/example.sock"],

865 "dangerouslyAllowAllUnixSockets": false

866 }

867 }

868} }

869```

870 

871`result.requirements` is `null` when no requirements are configured. See the docs on [`requirements.toml`](https://developers.openai.com/codex/config-reference#requirementstoml) for details on supported keys and values.

872 

873### Windows sandbox setup (`windowsSandbox/setupStart`)

874 

875Custom Windows clients can trigger sandbox setup asynchronously instead of blocking on startup checks.

876 

877```json

878{ "method": "windowsSandbox/setupStart", "id": 53, "params": { "mode": "elevated" } }

879{ "id": 53, "result": { "started": true } }

880```

881 

882App-server starts setup in the background and later emits a completion notification:

883 

884```json

885{

886 "method": "windowsSandbox/setupCompleted",

887 "params": { "mode": "elevated", "success": true, "error": null }

888}

889```

890 

891Modes:

892 

893- `elevated` - run the elevated Windows sandbox setup path.

894- `unelevated` - run the legacy setup/preflight path.

895 

896## Filesystem

897 

898The v2 filesystem APIs operate on absolute paths. Use `fs/watch` when a client needs to invalidate UI state after a file or directory changes.

899 

900```json

901{ "method": "fs/watch", "id": 54, "params": {

902 "watchId": "0195ec6b-1d6f-7c2e-8c7a-56f2c4a8b9d1",

903 "path": "/Users/me/project/.git/HEAD"

904} }

905{ "id": 54, "result": { "path": "/Users/me/project/.git/HEAD" } }

906{ "method": "fs/changed", "params": {

907 "watchId": "0195ec6b-1d6f-7c2e-8c7a-56f2c4a8b9d1",

908 "changedPaths": ["/Users/me/project/.git/HEAD"]

909} }

910{ "method": "fs/unwatch", "id": 55, "params": {

911 "watchId": "0195ec6b-1d6f-7c2e-8c7a-56f2c4a8b9d1"

912} }

913{ "id": 55, "result": {} }

914```

915 

916Watching a file emits `fs/changed` for that file path, including updates delivered by replace or rename operations.

656 917 

657## Events918## Events

658 919 

659Event notifications are the server-initiated stream for thread lifecycles, turn lifecycles, and the items within them. After you start or resume a thread, keep reading the active transport stream for `thread/started`, `turn/*`, and `item/*` notifications.920Event notifications are the server-initiated stream for thread lifecycles, turn lifecycles, and the items within them. After you start or resume a thread, keep reading the active transport stream for `thread/started`, `thread/archived`, `thread/unarchived`, `thread/closed`, `thread/status/changed`, `turn/*`, `item/*`, and `serverRequest/resolved` notifications.

660 921 

661### Notification opt-out922### Notification opt-out

662 923 

664 925 

665- Exact-match only: `item/agentMessage/delta` suppresses only that method.926- Exact-match only: `item/agentMessage/delta` suppresses only that method.

666- Unknown method names are ignored.927- Unknown method names are ignored.

667- Applies to both legacy (`codex/event/*`) and v2 (`thread/*`, `turn/*`, `item/*`, etc.) notifications.928- Applies to the current `thread/*`, `turn/*`, `item/*`, and related v2 notifications.

668- Doesn't apply to requests, responses, or errors.929- Doesn't apply to requests, responses, or errors.

669 930 

670### Fuzzy file search events (experimental)931### Fuzzy file search events (experimental)

674- `fuzzyFileSearch/sessionUpdated` - `{ sessionId, query, files }` with the current matches for the active query.935- `fuzzyFileSearch/sessionUpdated` - `{ sessionId, query, files }` with the current matches for the active query.

675- `fuzzyFileSearch/sessionCompleted` - `{ sessionId }` once indexing and matching for that query completes.936- `fuzzyFileSearch/sessionCompleted` - `{ sessionId }` once indexing and matching for that query completes.

676 937 

938### Windows sandbox setup events

939 

940- `windowsSandbox/setupCompleted` - `{ mode, success, error }` emitted after a `windowsSandbox/setupStart` request finishes.

941 

677### Turn events942### Turn events

678 943 

679- `turn/started` - `{ turn }` with the turn id, empty `items`, and `status: "inProgress"`.944- `turn/started` - `{ turn }` with the turn id, empty `items`, and `status: "inProgress"`.

689`ThreadItem` is the tagged union carried in turn responses and `item/*` notifications. Common item types include:954`ThreadItem` is the tagged union carried in turn responses and `item/*` notifications. Common item types include:

690 955 

691- `userMessage` - `{id, content}` where `content` is a list of user inputs (`text`, `image`, or `localImage`).956- `userMessage` - `{id, content}` where `content` is a list of user inputs (`text`, `image`, or `localImage`).

692- `agentMessage` - `{id, text}` containing the accumulated agent reply.957- `agentMessage` - `{id, text, phase?}` containing the accumulated agent reply. When present, `phase` uses Responses API wire values (`commentary`, `final_answer`).

693- `plan` - `{id, text}` containing proposed plan text in plan mode. Treat the final `plan` item from `item/completed` as authoritative.958- `plan` - `{id, text}` containing proposed plan text in plan mode. Treat the final `plan` item from `item/completed` as authoritative.

694- `reasoning` - `{id, summary, content}` where `summary` holds streamed reasoning summaries and `content` holds raw reasoning blocks.959- `reasoning` - `{id, summary, content}` where `summary` holds streamed reasoning summaries and `content` holds raw reasoning blocks.

695- `commandExecution` - `{id, command, cwd, status, commandActions, aggregatedOutput?, exitCode?, durationMs?}`.960- `commandExecution` - `{id, command, cwd, status, commandActions, aggregatedOutput?, exitCode?, durationMs?}`.

696- `fileChange` - `{id, changes, status}` describing proposed edits; `changes` list `{path, kind, diff}`.961- `fileChange` - `{id, changes, status}` describing proposed edits; `changes` list `{path, kind, diff}`.

697- `mcpToolCall` - `{id, server, tool, status, arguments, result?, error?}`.962- `mcpToolCall` - `{id, server, tool, status, arguments, result?, error?}`.

963- `dynamicToolCall` - `{id, tool, arguments, status, contentItems?, success?, durationMs?}` for client-executed dynamic tool invocations.

698- `collabToolCall` - `{id, tool, status, senderThreadId, receiverThreadId?, newThreadId?, prompt?, agentStatus?}`.964- `collabToolCall` - `{id, tool, status, senderThreadId, receiverThreadId?, newThreadId?, prompt?, agentStatus?}`.

699- `webSearch` - `{id, query, action?}` for web search requests issued by the agent.965- `webSearch` - `{id, query, action?}` for web search requests issued by the agent.

700- `imageView` - `{id, path}` emitted when the agent invokes the image viewer tool.966- `imageView` - `{id, path}` emitted when the agent invokes the image viewer tool.

751Order of messages:1017Order of messages:

752 1018 

7531. `item/started` shows the pending `commandExecution` item with `command`, `cwd`, and other fields.10191. `item/started` shows the pending `commandExecution` item with `command`, `cwd`, and other fields.

7542. `item/commandExecution/requestApproval` includes `itemId`, `threadId`, `turnId`, optional `reason`, optional `command`, optional `cwd`, optional `commandActions`, and optional `proposedExecpolicyAmendment`.10202. `item/commandExecution/requestApproval` includes `itemId`, `threadId`, `turnId`, optional `reason`, optional `command`, optional `cwd`, optional `commandActions`, optional `proposedExecpolicyAmendment`, optional `networkApprovalContext`, and optional `availableDecisions`. When `initialize.params.capabilities.experimentalApi = true`, the payload can also include experimental `additionalPermissions` describing requested per-command sandbox access. Any filesystem paths inside `additionalPermissions` are absolute on the wire.

7553. Client responds with one of the command execution approval decisions above.10213. Client responds with one of the command execution approval decisions above.

7564. `item/completed` returns the final `commandExecution` item with `status: completed | failed | declined`.10224. `serverRequest/resolved` confirms that the pending request has been answered or cleared.

10235. `item/completed` returns the final `commandExecution` item with `status: completed | failed | declined`.

1024 

1025When `networkApprovalContext` is present, the prompt is for managed network access (not a general shell-command approval). The current v2 schema exposes the target `host` and `protocol`; clients should render a network-specific prompt and not rely on `command` being a user-meaningful shell command preview.

1026 

1027Codex groups concurrent network approval prompts by destination (`host`, protocol, and port). The app-server may therefore send one prompt that unblocks multiple queued requests to the same destination, while different ports on the same host are treated separately.

757 1028 

758### File change approvals1029### File change approvals

759 1030 

7621. `item/started` emits a `fileChange` item with proposed `changes` and `status: "inProgress"`.10331. `item/started` emits a `fileChange` item with proposed `changes` and `status: "inProgress"`.

7632. `item/fileChange/requestApproval` includes `itemId`, `threadId`, `turnId`, optional `reason`, and optional `grantRoot`.10342. `item/fileChange/requestApproval` includes `itemId`, `threadId`, `turnId`, optional `reason`, and optional `grantRoot`.

7643. Client responds with one of the file change approval decisions above.10353. Client responds with one of the file change approval decisions above.

7654. `item/completed` returns the final `fileChange` item with `status: completed | failed | declined`.10364. `serverRequest/resolved` confirms that the pending request has been answered or cleared.

10375. `item/completed` returns the final `fileChange` item with `status: completed | failed | declined`.

1038 

1039### `tool/requestUserInput`

1040 

1041When the client responds to `item/tool/requestUserInput`, app-server emits `serverRequest/resolved` with `{ threadId, requestId }`. If the pending request is cleared by turn start, turn completion, or turn interruption before the client answers, the server emits the same notification for that cleanup.

1042 

1043### Dynamic tool calls (experimental)

1044 

1045`dynamicTools` on `thread/start` and the corresponding `item/tool/call` request or response flow are experimental APIs.

1046 

1047When a dynamic tool is invoked during a turn, app-server emits:

1048 

10491. `item/started` with `item.type = "dynamicToolCall"`, `status = "inProgress"`, plus `tool` and `arguments`.

10502. `item/tool/call` as a server request to the client.

10513. The client response payload with returned content items.

10524. `item/completed` with `item.type = "dynamicToolCall"`, the final `status`, and any returned `contentItems` or `success` value.

766 1053 

767### MCP tool-call approvals (apps)1054### MCP tool-call approvals (apps)

768 1055 

769App (connector) tool calls can also require approval. When an app tool call has side effects, the server may elicit approval with `tool/requestUserInput` and options such as **Accept**, **Decline**, and **Cancel**. If the user declines or cancels, the related `mcpToolCall` item completes with an error instead of running the tool.1056App (connector) tool calls can also require approval. When an app tool call has side effects, the server may elicit approval with `tool/requestUserInput` and options such as **Accept**, **Decline**, and **Cancel**. Destructive tool annotations always trigger approval even when the tool also advertises less-privileged hints. If the user declines or cancels, the related `mcpToolCall` item completes with an error instead of running the tool.

770 1057 

771## Skills1058## Skills

772 1059 

848} }1135} }

849```1136```

850 1137 

1138The server also emits `skills/changed` notifications when watched local skill files change. Treat this as an invalidation signal and rerun `skills/list` with your current params when needed.

1139 

851To enable or disable a skill by path:1140To enable or disable a skill by path:

852 1141 

853```json1142```json

863 1152 

864## Apps (connectors)1153## Apps (connectors)

865 1154 

866Use `app/list` to fetch available apps. In the CLI/TUI, `/apps` is the user-facing picker; in custom clients, call `app/list` directly. Each entry includes both `isAccessible` (available to the user) and `isEnabled` (enabled in `config.toml`) so clients can distinguish install/access from local enabled state.1155Use `app/list` to fetch available apps. In the CLI/TUI, `/apps` is the user-facing picker; in custom clients, call `app/list` directly. Each entry includes both `isAccessible` (available to the user) and `isEnabled` (enabled in `config.toml`) so clients can distinguish install/access from local enabled state. App entries can also include optional `branding`, `appMetadata`, and `labels` fields.

867 1156 

868```json1157```json

869{ "method": "app/list", "id": 50, "params": {1158{ "method": "app/list", "id": 50, "params": {

879 "name": "Demo App",1168 "name": "Demo App",

880 "description": "Example connector for documentation.",1169 "description": "Example connector for documentation.",

881 "logoUrl": "https://example.com/demo-app.png",1170 "logoUrl": "https://example.com/demo-app.png",

1171 "logoUrlDark": null,

1172 "distributionChannel": null,

1173 "branding": null,

1174 "appMetadata": null,

1175 "labels": null,

882 "installUrl": "https://chatgpt.com/apps/demo-app/demo-app",1176 "installUrl": "https://chatgpt.com/apps/demo-app/demo-app",

883 "isAccessible": true,1177 "isAccessible": true,

884 "isEnabled": true1178 "isEnabled": true

904 "name": "Demo App",1198 "name": "Demo App",

905 "description": "Example connector for documentation.",1199 "description": "Example connector for documentation.",

906 "logoUrl": "https://example.com/demo-app.png",1200 "logoUrl": "https://example.com/demo-app.png",

1201 "logoUrlDark": null,

1202 "distributionChannel": null,

1203 "branding": null,

1204 "appMetadata": null,

1205 "labels": null,

907 "installUrl": "https://chatgpt.com/apps/demo-app/demo-app",1206 "installUrl": "https://chatgpt.com/apps/demo-app/demo-app",

908 "isAccessible": true,1207 "isAccessible": true,

909 "isEnabled": true1208 "isEnabled": true

936}1235}

937```1236```

938 1237 

1238### Config RPC examples for app settings

1239 

1240Use `config/read`, `config/value/write`, and `config/batchWrite` to inspect or update app controls in `config.toml`.

1241 

1242Read the effective app config shape (including `_default` and per-tool overrides):

1243 

1244```json

1245{ "method": "config/read", "id": 60, "params": { "includeLayers": false } }

1246{ "id": 60, "result": {

1247 "config": {

1248 "apps": {

1249 "_default": {

1250 "enabled": true,

1251 "destructive_enabled": true,

1252 "open_world_enabled": true

1253 },

1254 "google_drive": {

1255 "enabled": true,

1256 "destructive_enabled": false,

1257 "default_tools_approval_mode": "prompt",

1258 "tools": {

1259 "files/delete": { "enabled": false, "approval_mode": "approve" }

1260 }

1261 }

1262 }

1263 }

1264} }

1265```

1266 

1267Update a single app setting:

1268 

1269```json

1270{

1271 "method": "config/value/write",

1272 "id": 61,

1273 "params": {

1274 "keyPath": "apps.google_drive.default_tools_approval_mode",

1275 "value": "prompt",

1276 "mergeStrategy": "replace"

1277 }

1278}

1279```

1280 

1281Apply multiple app edits atomically:

1282 

1283```json

1284{

1285 "method": "config/batchWrite",

1286 "id": 62,

1287 "params": {

1288 "edits": [

1289 {

1290 "keyPath": "apps._default.destructive_enabled",

1291 "value": false,

1292 "mergeStrategy": "upsert"

1293 },

1294 {

1295 "keyPath": "apps.google_drive.tools.files/delete.approval_mode",

1296 "value": "approve",

1297 "mergeStrategy": "upsert"

1298 }

1299 ]

1300 }

1301}

1302```

1303 

1304### Detect and import external agent config

1305 

1306Use `externalAgentConfig/detect` to discover external-agent artifacts that can be migrated, then pass the selected entries to `externalAgentConfig/import`.

1307 

1308Detection example:

1309 

1310```json

1311{ "method": "externalAgentConfig/detect", "id": 63, "params": {

1312 "includeHome": true,

1313 "cwds": ["/Users/me/project"]

1314} }

1315{ "id": 63, "result": {

1316 "items": [

1317 {

1318 "itemType": "AGENTS_MD",

1319 "description": "Import /Users/me/project/CLAUDE.md to /Users/me/project/AGENTS.md.",

1320 "cwd": "/Users/me/project"

1321 },

1322 {

1323 "itemType": "SKILLS",

1324 "description": "Copy skill folders from /Users/me/.claude/skills to /Users/me/.agents/skills.",

1325 "cwd": null

1326 }

1327 ]

1328} }

1329```

1330 

1331Import example:

1332 

1333```json

1334{ "method": "externalAgentConfig/import", "id": 64, "params": {

1335 "migrationItems": [

1336 {

1337 "itemType": "AGENTS_MD",

1338 "description": "Import /Users/me/project/CLAUDE.md to /Users/me/project/AGENTS.md.",

1339 "cwd": "/Users/me/project"

1340 }

1341 ]

1342} }

1343{ "id": 64, "result": {} }

1344```

1345 

1346When a request includes plugin imports, the server emits `externalAgentConfig/import/completed` after the import finishes. This notification may arrive immediately after the response or after background remote imports complete.

1347 

1348Supported `itemType` values are `AGENTS_MD`, `CONFIG`, `SKILLS`, `PLUGINS`,

1349and `MCP_SERVER_CONFIG`. For `PLUGINS` items, `details.plugins` lists each

1350`marketplaceName` and the `pluginNames` Codex can try to migrate. Detection

1351returns only items that still have work to do. For example, Codex skips AGENTS

1352migration when `AGENTS.md` already exists and is non-empty, and skill imports

1353don't overwrite existing skill directories.

1354 

1355When detecting plugins from `.claude/settings.json`, Codex reads configured

1356marketplace sources from `extraKnownMarketplaces`. If `enabledPlugins` contains

1357plugins from `claude-plugins-official` but the marketplace source is missing,

1358Codex infers `anthropics/claude-plugins-official` as the source.

1359 

939## Auth endpoints1360## Auth endpoints

940 1361 

941The JSON-RPC auth/account surface exposes request/response methods plus server-initiated notifications (no `id`). Use these to determine auth state, start or cancel logins, logout, and inspect ChatGPT rate limits.1362The JSON-RPC auth/account surface exposes request/response methods plus server-initiated notifications (no `id`). Use these to determine auth state, start or cancel logins, logout, inspect ChatGPT rate limits, and notify workspace owners about depleted credits or usage limits.

942 1363 

943### Authentication modes1364### Authentication modes

944 1365 

945Codex supports three authentication modes. `account/updated.authMode` shows the active mode, and `account/read` also reports it.1366Codex supports these authentication modes. `account/updated.authMode` shows the active mode and includes the current ChatGPT `planType` when available. `account/read` also reports account and plan details.

946 1367 

947- **API key (`apikey`)** - the caller supplies an OpenAI API key and Codex stores it for API requests.1368- **API key (`apikey`)** - the caller supplies an OpenAI API key with `type: "apiKey"`, and Codex stores it for API requests.

948- **ChatGPT managed (`chatgpt`)** - Codex owns the ChatGPT OAuth flow, persists tokens, and refreshes them automatically.1369- **ChatGPT managed (`chatgpt`)** - Codex owns the ChatGPT OAuth flow, persists tokens, and refreshes them automatically. Start with `type: "chatgpt"` for the browser flow or `type: "chatgptDeviceCode"` for the device-code flow.

949- **ChatGPT external tokens (`chatgptAuthTokens`)** - a host app supplies `idToken` and `accessToken` directly. Codex stores these tokens in memory, and the host app must refresh them when asked.1370- **ChatGPT external tokens (`chatgptAuthTokens`)** - experimental and intended for host apps that already own the user's ChatGPT auth lifecycle. The host app supplies an `accessToken`, `chatgptAccountId`, and optional `chatgptPlanType` directly, and must refresh the token when asked.

950 1371 

951### API overview1372### API overview

952 1373 

953- `account/read` - fetch current account info; optionally refresh tokens.1374- `account/read` - fetch current account info; optionally refresh tokens.

954- `account/login/start` - begin login (`apiKey`, `chatgpt`, or `chatgptAuthTokens`).1375- `account/login/start` - begin login (`apiKey`, `chatgpt`, `chatgptDeviceCode`, or experimental `chatgptAuthTokens`).

955- `account/login/completed` (notify) - emitted when a login attempt finishes (success or error).1376- `account/login/completed` (notify) - emitted when a login attempt finishes (success or error).

956- `account/login/cancel` - cancel a pending ChatGPT login by `loginId`.1377- `account/login/cancel` - cancel a pending managed ChatGPT login by `loginId`.

957- `account/logout` - sign out; triggers `account/updated`.1378- `account/logout` - sign out; triggers `account/updated`.

958- `account/updated` (notify) - emitted whenever auth mode changes (`authMode`: `apikey`, `chatgpt`, `chatgptAuthTokens`, or `null`).1379- `account/updated` (notify) - emitted whenever auth mode changes (`authMode`: `apikey`, `chatgpt`, `chatgptAuthTokens`, or `null`) and includes `planType` when available.

959- `account/chatgptAuthTokens/refresh` (server request) - request fresh externally managed ChatGPT tokens after an authorization error.1380- `account/chatgptAuthTokens/refresh` (server request) - request fresh externally managed ChatGPT tokens after an authorization error.

960- `account/rateLimits/read` - fetch ChatGPT rate limits.1381- `account/rateLimits/read` - fetch ChatGPT rate limits.

961- `account/rateLimits/updated` (notify) - emitted whenever a user's ChatGPT rate limits change.1382- `account/rateLimits/updated` (notify) - emitted whenever a user's ChatGPT rate limits change.

1383- `account/sendAddCreditsNudgeEmail` - ask ChatGPT to email a workspace owner about depleted credits or a reached usage limit.

962- `mcpServer/oauthLogin/completed` (notify) - emitted after a `mcpServer/oauth/login` flow finishes; payload includes `{ name, success, error? }`.1384- `mcpServer/oauthLogin/completed` (notify) - emitted after a `mcpServer/oauth/login` flow finishes; payload includes `{ name, success, error? }`.

1385- `mcpServer/startupStatus/updated` (notify) - emitted when a configured MCP server's startup status changes for a loaded thread; payload includes `{ name, status, error }`.

963 1386 

964### 1) Check auth state1387### 1) Check auth state

965 1388 

1031 ```1454 ```

1032 1455 

1033 ```json1456 ```json

1034 { "method": "account/updated", "params": { "authMode": "apikey" } }1457 {

1458 "method": "account/updated",

1459 "params": { "authMode": "apikey", "planType": null }

1460 }

1035 ```1461 ```

1036 1462 

1037### 3) Log in with ChatGPT (browser flow)1463### 3) Log in with ChatGPT (browser flow)

1063 ```1489 ```

1064 1490 

1065 ```json1491 ```json

1066 { "method": "account/updated", "params": { "authMode": "chatgpt" } }1492 {

1493 "method": "account/updated",

1494 "params": { "authMode": "chatgpt", "planType": "plus" }

1495 }

1496 ```

1497 

1498### 3b) Log in with ChatGPT (device-code flow)

1499 

1500Use this flow when your client owns the sign-in ceremony or when a browser callback is brittle.

1501 

15021. Start:

1503 

1504 ```json

1505 {

1506 "method": "account/login/start",

1507 "id": 4,

1508 "params": { "type": "chatgptDeviceCode" }

1509 }

1510 ```

1511 

1512 ```json

1513 {

1514 "id": 4,

1515 "result": {

1516 "type": "chatgptDeviceCode",

1517 "loginId": "<uuid>",

1518 "verificationUrl": "https://auth.openai.com/codex/device",

1519 "userCode": "ABCD-1234"

1520 }

1521 }

1522 ```

15232. Show `verificationUrl` and `userCode` to the user; the frontend owns the UX.

15243. Wait for notifications:

1525 

1526 ```json

1527 {

1528 "method": "account/login/completed",

1529 "params": { "loginId": "<uuid>", "success": true, "error": null }

1530 }

1531 ```

1532 

1533 ```json

1534 {

1535 "method": "account/updated",

1536 "params": { "authMode": "chatgpt", "planType": "plus" }

1537 }

1067 ```1538 ```

1068 1539 

1069### 3b) Log in with externally managed ChatGPT tokens (`chatgptAuthTokens`)1540### 3c) Log in with externally managed ChatGPT tokens (`chatgptAuthTokens`)

1070 1541 

1071Use this mode when a host application owns the user’s ChatGPT auth lifecycle and supplies tokens directly.1542Use this experimental mode only when a host application owns the user's ChatGPT auth lifecycle and supplies tokens directly. Clients must set `capabilities.experimentalApi = true` during `initialize` before using this login type.

1072 1543 

10731. Send:15441. Send:

1074 1545 

1078 "id": 7,1549 "id": 7,

1079 "params": {1550 "params": {

1080 "type": "chatgptAuthTokens",1551 "type": "chatgptAuthTokens",

1081 "idToken": "<jwt>",1552 "accessToken": "<jwt>",

1082 "accessToken": "<jwt>"1553 "chatgptAccountId": "org-123",

1554 "chatgptPlanType": "business"

1083 }1555 }

1084 }1556 }

1085 ```1557 ```

1100 ```json1572 ```json

1101 {1573 {

1102 "method": "account/updated",1574 "method": "account/updated",

1103 "params": { "authMode": "chatgptAuthTokens" }1575 "params": { "authMode": "chatgptAuthTokens", "planType": "business" }

1104 }1576 }

1105 ```1577 ```

1106 1578 

1112 "id": 8,1584 "id": 8,

1113 "params": { "reason": "unauthorized", "previousAccountId": "org-123" }1585 "params": { "reason": "unauthorized", "previousAccountId": "org-123" }

1114}1586}

1115{ "id": 8, "result": { "idToken": "<jwt>", "accessToken": "<jwt>" } }1587{ "id": 8, "result": { "accessToken": "<jwt>", "chatgptAccountId": "org-123", "chatgptPlanType": "business" } }

1116```1588```

1117 1589 

1118The server retries the original request after a successful refresh response. Requests time out after about 10 seconds.1590The server retries the original request after a successful refresh response. Requests time out after about 10 seconds.

1129```json1601```json

1130{ "method": "account/logout", "id": 5 }1602{ "method": "account/logout", "id": 5 }

1131{ "id": 5, "result": {} }1603{ "id": 5, "result": {} }

1132{ "method": "account/updated", "params": { "authMode": null } }1604{ "method": "account/updated", "params": { "authMode": null, "planType": null } }

1133```1605```

1134 1606 

1135### 6) Rate limits (ChatGPT)1607### 6) Rate limits (ChatGPT)

1141 "limitId": "codex",1613 "limitId": "codex",

1142 "limitName": null,1614 "limitName": null,

1143 "primary": { "usedPercent": 25, "windowDurationMins": 15, "resetsAt": 1730947200 },1615 "primary": { "usedPercent": 25, "windowDurationMins": 15, "resetsAt": 1730947200 },

1144 "secondary": null1616 "secondary": null,

1617 "rateLimitReachedType": null

1145 },1618 },

1146 "rateLimitsByLimitId": {1619 "rateLimitsByLimitId": {

1147 "codex": {1620 "codex": {

1148 "limitId": "codex",1621 "limitId": "codex",

1149 "limitName": null,1622 "limitName": null,

1150 "primary": { "usedPercent": 25, "windowDurationMins": 15, "resetsAt": 1730947200 },1623 "primary": { "usedPercent": 25, "windowDurationMins": 15, "resetsAt": 1730947200 },

1151 "secondary": null1624 "secondary": null,

1625 "rateLimitReachedType": null

1152 },1626 },

1153 "codex_other": {1627 "codex_other": {

1154 "limitId": "codex_other",1628 "limitId": "codex_other",

1155 "limitName": "codex_other",1629 "limitName": "codex_other",

1156 "primary": { "usedPercent": 42, "windowDurationMins": 60, "resetsAt": 1730950800 },1630 "primary": { "usedPercent": 42, "windowDurationMins": 60, "resetsAt": 1730950800 },

1157 "secondary": null1631 "secondary": null,

1632 "rateLimitReachedType": null

1158 }1633 }

1159 }1634 }

1160} }1635} }

1175- `usedPercent` is current usage within the quota window.1650- `usedPercent` is current usage within the quota window.

1176- `windowDurationMins` is the quota window length.1651- `windowDurationMins` is the quota window length.

1177- `resetsAt` is a Unix timestamp (seconds) for the next reset.1652- `resetsAt` is a Unix timestamp (seconds) for the next reset.

1653- `planType` is included when the backend returns the ChatGPT plan associated with a bucket.

1654- `credits` is included when the backend returns remaining workspace credit details.

1655- `rateLimitReachedType` identifies the backend-classified limit state when one has been reached.

1656 

1657### 7) Notify a workspace owner about a limit

1658 

1659Use `account/sendAddCreditsNudgeEmail` to ask ChatGPT to email a workspace owner when credits are depleted or a usage limit has been reached.

1660 

1661```json

1662{ "method": "account/sendAddCreditsNudgeEmail", "id": 7, "params": { "creditType": "credits" } }

1663{ "id": 7, "result": { "status": "sent" } }

1664```

1665 

1666Use `creditType: "credits"` when workspace credits are depleted, or `creditType: "usage_limit"` when the workspace usage limit has been reached. If the owner was already notified recently, the response status is `cooldown_active`.

2 2 

3Automate recurring tasks in the background. Codex adds findings to the inbox, or automatically archives the task if there's nothing to report. You can combine automations with [skills](https://developers.openai.com/codex/skills) for more complex tasks.3Automate recurring tasks in the background. Codex adds findings to the inbox, or automatically archives the task if there's nothing to report. You can combine automations with [skills](https://developers.openai.com/codex/skills) for more complex tasks.

4 4 

5Automations run locally in the Codex app. The app needs to be running, and the5For project-scoped automations, the app needs to be running, and the selected

6selected project needs to be available on disk.6project needs to be available on disk.

7 7 

8In Git repositories, each automation run starts in a new8In Git repositories, you can choose whether an automation runs in your local

9[worktree](https://developers.openai.com/codex/app/worktrees) so it doesn’t interfere with your main9project or on a new [worktree](https://developers.openai.com/codex/app/worktrees). Both options run in the

10checkout. In non-version-controlled projects, automations run directly in the10background. Worktrees keep automation changes separate from unfinished local

11work, while running in your local project can modify files you are still

12working on. In non-version-controlled projects, automations run directly in the

11project directory.13project directory.

12 14 

13![Automation creation form with schedule and prompt fields](/images/codex/app/create-automation-light.webp)15You can also leave the model and reasoning effort on their default settings, or

16choose them explicitly if you want more control over how the automation runs.

17 

18![Automation creation form with schedule and prompt fields](/images/codex/app/codex-automations-light.webp)

14 19 

15## Managing tasks20## Managing tasks

16 21 

17All automations and their runs can be found in the automations pane inside your Codex app sidebar.22Find all automations and their runs in the automations pane inside your Codex app sidebar.

18 23 

19The "Triage" section acts as your inbox. Automation runs with findings show up there, and you can filter your inbox to show all automation runs or only unread ones.24The "Triage" section acts as your inbox. Automation runs with findings show up there, and you can filter your inbox to show all automation runs or only unread ones.

20 25 

21When an automation runs in a Git repository, Codex uses a dedicated background [worktree](https://developers.openai.com/codex/app/features#worktree-support). In non-version-controlled projects, automations run directly in the project directory. Consider using Git to enable running on background worktrees. You can have the same automation run on multiple projects.26Standalone automations start fresh runs on a schedule and report results in

27Triage. Use them when each run should be independent or when one automation

28should run across one or more projects. If you need a custom cadence, choose a

29custom schedule and enter cron syntax.

30 

31For Git repositories, each automation can run either in your local project or

32on a dedicated background [worktree](https://developers.openai.com/codex/app/features#worktree-support). Use

33worktrees when you want to isolate automation changes from unfinished local

34work. Use local mode when you want the automation to work directly in your main

35checkout, keeping in mind that it can change files you are actively editing.

36In non-version-controlled projects, automations run directly in the project

37directory. You can have the same automation run on more than one project.

22 38 

23Automations use your default sandbox settings. In read-only mode, tool calls fail if they require modifying files, network access, or working with apps on your computer. With full access enabled, background automations carry elevated risk. You can adjust sandbox settings in [Settings](https://developers.openai.com/codex/app/settings) and selectively allowlist commands with [rules](https://developers.openai.com/codex/rules).39Automations use your default sandbox settings. In read-only mode, tool calls fail if they require modifying files, network access, or working with apps on your computer. With full access enabled, background automations carry elevated risk. You can adjust sandbox settings in [Settings](https://developers.openai.com/codex/app/settings) and selectively allowlist commands with [rules](https://developers.openai.com/codex/rules).

24 40 

25To keep automations maintainable and shareable across teams, you can use [skills](https://developers.openai.com/codex/skills) to define the action and provide tools and context to Codex. You can explicitly trigger a skill as part of an automation by using `$skill-name` inside your automation.41Automations can use the same plugins and skills available to Codex. To keep

42automations maintainable and shareable across teams, use [skills](https://developers.openai.com/codex/skills)

43to define the action and provide tools and context. You can explicitly trigger a

44skill as part of an automation by using `$skill-name` inside your automation.

45 

46## Ask Codex to create or update automations

47 

48You can create and update automations from a regular Codex thread. Describe the

49task, the schedule, and whether the automation should stay attached to the

50current thread or start fresh runs. Codex can draft the automation prompt, choose

51the right automation type, and update it when the scope or cadence changes.

52 

53For example, ask Codex to remind you in this thread while a deployment finishes,

54or ask it to create a standalone automation that checks a project on a recurring

55schedule.

56 

57Skills can also create or update automations. For example, a skill for

58babysitting a pull request could set up a recurring automation that checks the

59PR status with the GitHub plugin and fixes new review feedback.

60 

61## Thread automations

62 

63Thread automations are heartbeat-style recurring wake-up calls attached to the

64current thread. Use them when you want Codex to keep returning to the same

65conversation on a schedule.

66 

67Use a thread automation when the scheduled work should preserve the thread's

68context instead of starting from a new prompt each time.

69 

70Thread automations can use minute-based intervals for active follow-up loops,

71or daily and weekly schedules when you need a check-in at a specific time.

72 

73Thread automations are useful for:

74 

75- checking a long-running command until it finishes

76- polling Slack, GitHub, or another connected source when the results should

77 stay in the same thread

78- reminding Codex to continue a review loop at a fixed cadence

79- running a skill-driven workflow that uses plugins, such as checking PR status

80 and addressing new feedback

81- keeping a chat focused on an ongoing research or triage task

82 

83Use a standalone or project automation when each run should be independent,

84when it should run across more than one project, or when findings should appear

85as separate automation runs in Triage.

86 

87When you create a thread automation, make the prompt durable. It should

88describe what Codex should do each time the thread wakes up, how to decide

89whether there is anything important to report, and when to stop or ask you for

90input.

26 91 

27## Testing automations safely92## Test automations

28 93 

29Before you schedule an automation, test the prompt manually in a regular thread94Before you schedule an automation, test the prompt manually in a regular thread

30first. This helps you confirm:95first. This helps you confirm:

31 96 

32- The prompt is clear and scoped correctly.97- The prompt is clear and scoped correctly.

33- The selected model and tools behave as expected.98- The selected or default model, reasoning effort, and tools behave as expected.