How to install Arduino MCP Server in Codex

To install Arduino MCP Server in Codex, run "codex mcp add arduino-mcp-server -- npx -y arduino-mcp-server" 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 arduino-mcp-server -- npx -y arduino-mcp-server

2
Check it
Inside Codex, type /mcp to see the server and its tools.

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

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Questions

Does Arduino MCP Server work in Codex?

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

Arduino MCP Server 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 Arduino MCP Server safe?

It scores 42 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.