MCP Inspector Skill
Guidelines for using the MCP Inspector tool in CLI mode for protocol inspection, debugging, and tool listing in a VS Code environment.
Prerequisites
- •Ensure you have Node.js and npx installed.
- •Install MCP Inspector:
npx -y @modelcontextprotocol/inspector --help - •Build your MCP server (e.g.,
bun run buildor equivalent).
Usage Examples
List Available Tools
Run the following command in your VS Code terminal:
bash
npx -y @modelcontextprotocol/inspector --cli node build/index.js --method tools/list
Send a Protocol Request (e.g., ping)
bash
npx -y @modelcontextprotocol/inspector --cli node build/index.js --method ping
Debugging and Inspection
- •Use Inspector CLI to wrap your MCP server and inspect protocol traffic.
- •Example for STDIO server:
bash
npx -y @modelcontextprotocol/inspector node build/index.js
- •For HTTP server:
bash
npx -y @modelcontextprotocol/inspector node build/server.js
Tips
- •Use Inspector CLI flags for advanced filtering, logging, and output formatting. See Inspector documentation for details.
- •Integrate Inspector CLI commands into your VS Code tasks or launch configurations for automated inspection and debugging.
- •Use Vitest or your preferred test runner to automate CLI checks (see
tests/inspector.test.tsfor examples).