MCP Inspector

MCP Inspector is an interactive developer tool for testing and debugging Model Context Protocol servers.

The MCP Inspector is an interactive developer tool designed for testing and debugging Model Context Protocol servers. It provides visibility into protocol traffic through a monitoring sidebar in the web client. Developers can run the tool in the browser, on the command line, or in the terminal using specific mode flags. It supports inspecting published servers from npm and PyPI packages as well as remote HTTP servers. The documentation provides a complete index, quickstart guides, configuration details, authorization guidelines, and debugging instructions.

MCP Inspector at a glance

Best for: Software engineer
Runs on: Web, CLI, Terminal
Pricing: Free
Released: October 2024
Category: AI coding tool
Website: modelcontextprotocol.io

Key features

Interactive developer tooling for testing and debugging
Protocol traffic monitoring sidebar in the web client
Support for web, CLI, and TUI modes
Inspection of published servers from npm packages
Inspection of published servers from PyPI packages
Inspection of remote HTTP servers
Launcher and client configuration flags

Use it for

Testing Model Context Protocol servers
Debugging MCP server protocol traffic
Inspecting published npm and PyPI packages
Monitoring server communication in a web client

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