mcp-server-connection-mcp-server-disconnects-shortly-after-connecting-wi-904d1374

THEN Verify that the command in the client configuration (e.g., claude_desktop_config.json) specifies the correct runtime (`uv run` vs `node`) and that all dependencies are installed in that environment. Add stderr logging (e.g., `console.error('error:', err)` in Node.js or `print('error:', err, file=sys.stderr)` in Python) to capture any startup errors that may cause the process to exit.

// Node.js: add to MCP server startup
console.error('Server starting...');
process.on('uncaughtException', (err) => console.error('Uncaught:', err));

# Python: add to MCP server
import sys
print('Server starting...', file=sys.stderr)