How to install Node Repl MCP in Codex

To install Node Repl MCP in Codex, run "codex mcp add node-repl-mcp -- npx -y @qwen-code/node-repl-mcp" in your terminal, then type /mcp in Codex to check it.

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Run the install command

In a terminal, run:

codex mcp add node-repl-mcp -- npx -y @qwen-code/node-repl-mcp

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Check it
Inside Codex, type /mcp to see the server and its tools.

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

Install Node Repl MCP in another app

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Questions

Does Node Repl MCP work in Codex?

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

Node Repl 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 Node Repl MCP safe?

It scores 94 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.