mcp.md Codex Docs, 2026-02-23 18:27 UTC → 2026-03-25 18:24 UTC

75- `enabled_tools` (optional): Tool allow list.75- `enabled_tools` (optional): Tool allow list.

76- `disabled_tools` (optional): Tool deny list (applied after `enabled_tools`).76- `disabled_tools` (optional): Tool deny list (applied after `enabled_tools`).

77 77 

78If your OAuth provider requires a static callback URI, set the top-level `mcp_oauth_callback_port` in `config.toml`. If unset, Codex binds to an ephemeral port.78If your OAuth provider requires a fixed callback port, set the top-level `mcp_oauth_callback_port` in `config.toml`. If unset, Codex binds to an ephemeral port.

79 

80If your MCP OAuth flow must use a specific callback URL (for example, a remote devbox ingress URL or a custom callback path), set `mcp_oauth_callback_url`. Codex uses this value as the OAuth `redirect_uri` while still using `mcp_oauth_callback_port` for the callback listener port. Local callback URLs (for example `localhost`) bind on loopback; non-local callback URLs bind on `0.0.0.0` so the callback can reach the host.

81 

82If the MCP server advertises `scopes_supported`, Codex prefers those

83server-advertised scopes during OAuth login. Otherwise, Codex falls back to the

84scopes configured in `config.toml`.

79 85 

80#### config.toml examples86#### config.toml examples

81 87 

88MY_ENV_VAR = "MY_ENV_VALUE"94MY_ENV_VAR = "MY_ENV_VALUE"

89```95```

90 96 

97```toml

98# Optional MCP OAuth callback overrides (used by `codex mcp login`)

99mcp_oauth_callback_port = 5555

100mcp_oauth_callback_url = "https://devbox.example.internal/callback"

101```

102 

91```toml103```toml

92[mcp_servers.figma]104[mcp_servers.figma]

93url = "https://mcp.figma.com/mcp"105url = "https://mcp.figma.com/mcp"

109 121 

110The list of MCP servers keeps growing. Here are a few common ones:122The list of MCP servers keeps growing. Here are a few common ones:

111 123 

112- [OpenAI Docs MCP](/resources/docs-mcp): Search and read OpenAI developer docs.124- [OpenAI Docs MCP](/learn/docs-mcp): Search and read OpenAI developer docs.

113- [Context7](https://github.com/upstash/context7): Connect to up-to-date developer documentation.125- [Context7](https://github.com/upstash/context7): Connect to up-to-date developer documentation.

114- Figma [Local](https://developers.figma.com/docs/figma-mcp-server/local-server-installation/) and [Remote](https://developers.figma.com/docs/figma-mcp-server/remote-server-installation/): Access your Figma designs.126- Figma [Local](https://developers.figma.com/docs/figma-mcp-server/local-server-installation/) and [Remote](https://developers.figma.com/docs/figma-mcp-server/remote-server-installation/): Access your Figma designs.

115- [Playwright](https://www.npmjs.com/package/@playwright/mcp): Control and inspect a browser using Playwright.127- [Playwright](https://www.npmjs.com/package/@playwright/mcp): Control and inspect a browser using Playwright.