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Codex · MCP setup

Use any MCP server in Codex -
same install as everywhere else.

Codex speaks MCP. If you also use Claude Code or Cursor, 1Server gives you a single install you do not have to re-do per tool.

About Codex

Codex is OpenAI's coding agent that runs locally and integrates with the OpenAI Agent SDK. MCP servers register through `codex mcp add` or the manual mcpServers JSON.

By OpenAI. Visit homepage

60-second install

command
codex mcp add 1server --env ONESERVER_API_KEY=YOUR_KEY -- npx -y 1server-mcp-engine

Run the CLI command, or add the JSON to your Codex config under `mcpServers`.

Replace your-api-key / YOUR_KEY with the API key from your dashboard.

Why use 1Server with Codex?

  • One 1Server install works across every AI coding tool you switch between.
  • No per-tool config drift - the same servers everywhere.
  • Hot reload picks up new installs without restarting Codex.

Also using a different tool?

CursorCursorClaudeClaude DesktopAntigravityClaude CodeVS CodeWindsurfWindsurfGemini CLIGemini CLI

Get started in 5 minutes.

Free. No credit card.

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