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MCP using node on asdf

Published at

12/12/2024

Categories

mcp

claude

asdf

Author

cojiroooo

Main Article

https://dev.to/cojiroooo/mcp-using-node-on-asdf-382n

Categories

3 categories in total

Author

9 person written this

MCP using node on asdf

What happend?

I tried this tutorial( 👉https://modelcontextprotocol.io/quickstart ) , and encountered following error in MCP log when I started the Claude Desktop App.

2024-12-12T07:24:00.201Z [error] Could not start MCP server weather: Error: spawn node ENOENT
    at ChildProcess._handle.onexit (node:internal/child_process:286:19)
    at onErrorNT (node:internal/child_process:484:16)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
  errno: -2,
  code: 'ENOENT',
  syscall: 'spawn node',
  path: 'node',
  spawnargs: [Array]
}

Environment

macOS 14.3.1(Sonoma)
asdf v0.13.1
node v20.11.0

% which node
/Users/user_name/.asdf/shims/node

Solution

My claude_desktop_config.json has problems.
I changed laude_desktop_config.json like "after" and restarted the Claude Desktop App.

before

{
    "mcpServers": {
        "weather": {
            "command": "node",
            "args": [
                "/Users/user_name/develop/mcp/tutorial/weather-server/build/index.js"
            ]
        }
    }
}

after

{
  "mcpServers": {
    "weather": {
      "command": "node",
      "args": ["/Users/user_name/develop/mcp/tutorial/weather-server/build/index.js"],
      "env": {
        "PATH": "/Users/user_name/.asdf/shims:/usr/bin:/bin",
        "ASDF_DIR": "/opt/homebrew/opt/asdf/libexec",
        "ASDF_DATA_DIR": "/Users/user_name/.asdf",
        "ASDF_NODEJS_VERSION": "20.11.0"
      }
    }
  }
}

I add "env" key.
ASDF_DIR is set this(↓) value.

% echo $ASDF_DIR                             
/opt/homebrew/opt/asdf/libexec

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