Filesystem MCP extension crashes on Windows — built-in Node.js incompatibility
증상
The built-in Filesystem MCP extension consistently crashes on Windows when launched via Claude Desktop’s built-in Node.js. The server starts, receives the initialize message, then silently exits ~1-4 seconds later with no error output on stderr.
원인
OpenClaw gateway, skill, or agent configuration issue — root cause confirmed in the openclaw/openclaw issue tracker.
해결법
Installing @modelcontextprotocol/server-filesystem globally and configuring it in claude_desktop_config.json with "command": "node" (using the system Node.js instead of the built-in one) works correctly. The server name must NOT be "filesystem" as Claude Desktop ignores config entries with that name.
"local-fs": {
"command": "node",
"args": [
"C:\Users\<user>\AppData\Roaming\npm\node_modules\@modelcontextprotocol\server-filesystem\dist\index.js",
"C:\path\to\allowed\directory"
]
}
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/anthropics/claude-code/issues/27719
Source: https://github.com/anthropics/claude-code/issues/27719
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