Codex MCP server

This is a small helper that connects your AI assistant to Codex CLI, a coding tool from OpenAI. Once it is set up, you can point your assistant at files on your computer and ask it to explain, review, or rewrite them. It is handy for anyone who works with code and wants a second pair of eyes without leaving the chat.

What this MCP server does

You ask your AI something about your code, like explaining a file or fixing a bug. Your AI sends that request to this helper. The helper runs Codex CLI on your machine, pointing it at the files you mentioned with the @ symbol. Codex reads the code, thinks about it, and sends back an explanation, a suggested change, or a new version of the file. The helper passes that answer back to your AI, which shows it to you.

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What you can do with it

• Explain what a file or folder of code does
• List the dependencies in a project file
• Suggest and apply edits to your code
• Review your recent changes and point out problems
• Run a coding task in a safe sandbox and check it worked
• Brainstorm ideas using structured methods like SCAMPER
• Generate or edit images through Codex's image tool

Try asking your AI

• “explain the architecture of @src/”
• “analyze @package.json and list dependencies”
• “ask codex sessionId:"my-project" prompt:"now add error handling”
• “brainstorm ways to optimize CI/CD using SCAMPER method”

What it gives back to you

You get answers in plain text in the chat: explanations, lists, code snippets, or a summary of changes made. If you asked for edits, you see the new code or a description of what changed. Some tools also report file details like image size or whether a background is transparent. Everything shows up right where you are chatting, no need to switch apps.

Before you start

Who it's for

Developers, analysts, and anyone who works with code files and wants an AI to help read, review, or edit them.