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MCP servers and skills for Codex

Setup steps and file locations from OpenAI's own documentation. Checked Nov 14, 2026.

121 MCP servers299 skills

MCP servers

✓ Supported

Add a server

  1. For a local server, run codex mcp add <name> with any --env KEY=value flags, then -- and the launch command.
  2. For a remote server, run codex mcp add <name> --url <server-url>, adding OAuth client flags if the server needs them.
  3. Or edit ~/.codex/config.toml directly and add an [mcp_servers.<name>] table.
  4. For OAuth servers, run codex mcp login <name> and finish the browser sign-in.
  5. Start Codex; the CLI and IDE extension pick up the same configuration.

Where it's saved

Default
~/.codex/config.toml
Trusted projects
.codex/config.toml

OpenAI's MCP documentationOpen the config builderHow to connect MCP servers to AI clients

Skills

✓ Supported

A skill is a folder with a SKILL.md file. Codex finds skills here:

Repository
$CWD/.agents/skills$CWD/../.agents/skills$REPO_ROOT/.agents/skills
User
$HOME/.agents/skills
Admin
/etc/codex/skills
System
Bundled with Codex

OpenAI's skills documentationHow to create a skill

All listings

420

Sorted: official first, then quality and activity.Show all, including less active listings

Questions

Does Codex support MCP servers?
Yes. Codex runs local servers over stdio and connects to remote servers over Streamable HTTP, with OAuth through codex mcp login. The Codex CLI, IDE extension and ChatGPT desktop app share one config file, ~/.codex/config.toml.
Does Codex support skills?
Yes. Each skill is a folder with a SKILL.md that names and describes it. Codex reads skills from .agents/skills/ in a repository and from ~/.agents/skills/ in your home directory.