Web search

For the complete documentation index, see llms.txt. Markdown versions of documentation pages are available by appending .md to the page URL.

ChatGPT includes a first-party web search tool. Treat all web results as untrusted input.

In the ChatGPT desktop app, ask for current information in a chat. ChatGPT records search activity with the other tool calls in the transcript.

Configure local web search

For local Codex chats, Codex enables cached search by default. Cached mode uses an OpenAI-maintained index instead of fetching arbitrary pages live, which lowers—but doesn't remove—prompt injection risk.

Use live search when your task depends on the latest information. Set web_search = "live" in config.toml. Set web_search = "disabled" to turn the tool off. The "indexed" mode permits external web access only when the search index gates the request. When Codex runs with full access, web search defaults to live results. See Config basics for config file locations and precedence.

For network boundaries that apply to Codex cloud environments, see Internet access.