MCPJam Inspector

Active
GitHub TypeScript NOASSERTION

Description

Development platform to debug, chat, inspect, and evaluate MCP servers and apps for faster MCP development.

Key Features

  • Full JSON-RPC message tracing and OAuth debugger for MCP server development
  • Multi-server chat on frontier models with side-by-side trace and raw message views
  • Eval system running test cases across multiple LLMs with accuracy tracking over time
  • CLI and SDK for terminal-based inspection, doctor checks, and CI/CD pipeline integration
  • Desktop app for Mac and Windows with STDIO and HTTP/S server support, no Node.js required
  • App Builder for debugging servers against models with Chrome DevTools-style widget emulator

Use Cases

💡 Debug MCP server tool calls, resource access, and OAuth flows during development
💡 Run regression evaluations on MCP servers before deploying updates
💡 Inspect JSON-RPC message traces to diagnose agent-server communication issues
💡 Integrate MCP server health checks into GitHub Actions CI/CD pipelines
💡 Test MCP apps against multiple LLM providers to verify compatibility

Tags

mcp debugging development inspector typescript

Categories

🔌 MCP Tools

Quick Start

Open the hosted app at app.mcpjam.com, or run `npx @mcpjam/inspector@latest` to start locally. For desktop, download the installer from the GitHub releases page. Connect your MCP server and start debugging with full trace visibility.
Visit GitHub

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