MCPHubs

Troubleshooting & FAQ

Solve common problems in MCP development process, quickly find solutions

🔧 System Troubleshooting Steps

Follow these steps to systematically troubleshoot and resolve MCP-related issues

1

Check Environment Configuration

Ensure all necessary dependencies are properly installed

Execute Commands:

# 检查Python版本
python --version

# 检查MCP SDK安装
pip show mcp

# 验证Node.js版本（如果使用TypeScript）
node --version
npm --version

Expected Results:

Python 3.8+, MCP SDK installed, Node.js 18+

Troubleshooting:

  • •If Python version is too low, upgrade to 3.8 or higher
  • •If MCP SDK is not installed: pip install mcp
  • •Ensure using correct Python environment (virtual environment)
2

Verify Server Startup

Test if MCP server can start normally

Execute Commands:

# 直接运行服务器
python server.py

# 或者使用调试模式
PYTHONPATH=. python -m server

Expected Results:

Server starts successfully, no error messages

Troubleshooting:

  • •Check if import statements are correct
  • •Ensure all dependencies are installed
  • •Check if port is occupied
3

Configure Claude Desktop

Ensure Claude Desktop is properly configured with MCP server

Execute Commands:

# Claude Desktop配置文件位置
# macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
# Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "my-server": {
      "command": "python",
      "args": ["/absolute/path/to/server.py"]
    }
  }
}

Expected Results:

Configuration file format is correct, paths are valid

Troubleshooting:

  • •Ensure using absolute paths
  • •Check if JSON format is correct
  • •Restart Claude Desktop application
4

Test Tool Functionality

Verify MCP tools are working properly

Execute Commands:

# 在Claude Desktop中测试
# 询问: "你有什么工具可以使用？"
# 或者: "帮我调用工具XYZ"

Expected Results:

Claude can recognize and call MCP tools

Troubleshooting:

  • •Check if tool definition format is correct
  • •Ensure tool names comply with specifications
  • •View Claude Desktop log files

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