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How to install Claude Mermaid in Windsurf

To install Claude Mermaid in Windsurf, paste the "claude-mermaid" block into ~/.codeium/windsurf/mcp_config.json and refresh the MCP panel in Cascade.

Built from the published package · server updated 2 days ago

  1. 1

    Open the MCP config

    In Windsurf, open Settings, then Cascade, then MCP servers, and choose to view the raw config.

  2. 2

    Add the server

    Paste this into mcp_config.json:

    {
      "mcpServers": {
        "claude-mermaid": {
          "command": "npx",
          "args": [
            "-y",
            "claude-mermaid"
          ]
        }
      }
    }
  3. 3

    Refresh

    Click refresh in the MCP panel. The server and its tools appear in Cascade.

Config file: ~/.codeium/windsurf/mcp_config.json

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

Install Claude Mermaid in another app

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Questions

Does Claude Mermaid work in Windsurf?

Yes. Windsurf supports local and remote mcp servers, and Claude Mermaid installs with the steps above.

Claude Mermaid does not show up in Windsurf. What now?

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

Is Claude Mermaid safe?

It scores 78 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.