How to install Openai MCP in Codex

To install Openai MCP in Codex, run "codex mcp add openai-mcp -- npx -y openai-mcp" in your terminal, then type /mcp in Codex to check it.

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MCP servers run with your permissions. If Openai MCP needs an API key, add it under env in the config. Check its README.

Install Openai MCP in another app

Mock, record/replay, verify and chaos-test any HTTP, REST, gRPC or LLM dependency over MCP.

XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.

Codebase intelligence for AI coding agents — graph, git history, docs, decisions, code health.

Does Openai MCP work in Codex?

Yes. Codex supports mcp servers in the codex cli and ide extension, and Openai MCP installs with the steps above.

Openai MCP does not show up in Codex. What now?

Restart Codex fully, check the JSON is valid, and make sure Node.js (for npx) is installed. See common MCP errors and fixes.

Is Openai MCP safe?

It scores 33 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.