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codex/docs/config.md
Matthew Zeng 4d25fe57b3 update
2026-01-21 17:37:09 -08:00

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Configuration

For basic configuration instructions, see this documentation.

For advanced configuration instructions, see this documentation.

For a full configuration reference, see this documentation.

Connecting to MCP servers

Codex can connect to MCP servers configured in ~/.codex/config.toml. See the configuration reference for the latest MCP server options:

Apps (Connectors)

Use $ in the composer to insert a ChatGPT connector; the popover lists accessible apps. Connected apps appear first and are labeled as connected; others are marked as can be installed. The /apps command still lists apps, but it is read-only. Inserting an app adds <connector name> to the composer. Apps are exposed through the built-in codex_apps_mcp MCP server when the connectors feature is enabled. Only connectors inserted into the conversation are enabled as tools, and there is no connectors-specific configuration in config.toml. By default, the built-in server uses the same bearer token as other Codex backend requests. To override it, set the CODEX_CONNECTORS_TOKEN environment variable to a non-empty value.

Notify

Codex can run a notification hook when the agent finishes a turn. See the configuration reference for the latest notification settings:

JSON Schema

The generated JSON Schema for config.toml lives at codex-rs/core/config.schema.json.

Notices

Codex stores "do not show again" flags for some UI prompts under the [notice] table.

Ctrl+C/Ctrl+D quitting uses a ~1 second double-press hint (ctrl + c again to quit).