How to install MCP Mermaid in Codex

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

Built from the published package · server updated 5 months ago

Run the install command

In a terminal, run:

codex mcp add mcp-mermaid -- npx -y mcp-mermaid

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

Architecture diagrams, explanations and Mermaid source for public GitHub repositories.

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Does MCP Mermaid work in Codex?

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

MCP Mermaid 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 MCP Mermaid safe?

It scores 75 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.