MCP Inspector

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GitHub TypeScript NOASSERTION

Description

MCP Inspector is a debugging and inspection tool for the Model Context Protocol ecosystem, useful for validating MCP server behavior and troubleshooting integrations.

Key Features

  • React-based web UI for interactively testing and debugging MCP servers
  • MCP Proxy bridges browser to servers via stdio, SSE, and streamable HTTP transports
  • Supports bearer token authentication for secure SSE connections
  • Export server configurations to mcp.json for Cursor, Claude Code, and other clients
  • Run via npx, Docker, or directly against an MCP server repository
  • Random session token auth by default with auto browser opening

Use Cases

πŸ’‘ Test and validate MCP server implementations during development
πŸ’‘ Debug tool invocations and protocol interactions in a visual interface
πŸ’‘ Export tested configurations directly into Cursor or Claude Code
πŸ’‘ Verify SSE and streamable HTTP transport connections work correctly
πŸ’‘ Debug MCP servers in Docker containers with isolated networking

Tags

mcp debugging protocol typescript

Categories

πŸ”Œ MCP Tools

Quick Start

npx @modelcontextprotocol/inspector β†’ open http://localhost:6274 β†’ configure server settings in sidebar β†’ test tools interactively
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