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Codex

OpenAI · Terminal, Editor extension, Desktop app

Find servers for Codex Official site

Codex is OpenAI's coding agent, available as an open-source command-line tool, an editor extension and inside the ChatGPT desktop app. These three share one MCP configuration stored in config.toml, so a server set up once works in all of them. It supports local stdio servers and Streamable HTTP servers with bearer-token or OAuth sign-in; servers are added with codex mcp add or from the settings screens.

Runs on
macOS, Windows, Linux source
Kind
Terminal, Editor extension, Desktop app source
Price
Free plan source
Source code
Published, Apache-2.0 source
Connects to
Local (stdio), Remote (HTTP) source
Publisher
OpenAI source

How to add a server to Codex

  1. Find the server you want on plug.directory and open its page.
  2. In its install block, pick Codex. The block shows the config and where it goes.
  3. Run the command in a terminal. Then check the server's tools in Codex, as its docs describe.

For example, Azure MCP Server, one of the top ranked servers that work in Codex, goes in a terminal:

codex mcp add azure -- npx -y @azure/[email protected] server start

Step by step for this server

How to add an MCP server to Codex: local and remote

Matches the official docs The config follows Codex's MCP docs, read on 2026-10-31.

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  10. Stripe MCP server integrating with Stripe - tools for customers, products, payments, and more.

All 119,247 servers that work in Codex The best list, side by side

Codex compared

Codex vs Claude CodeCodex vs CursorCodex vs Gemini CLICodex vs Goose

Facts read from OpenAI's own pages on 2026-10-31; the description is ours, from its site. Every client