The complete developer toolkit for building, testing, and debugging Model Context Protocol servers — inspector, chat, tracer, and more.
Features
Browse every tool, resource, and prompt your MCP server exposes. Call any tool with a live JSON editor and inspect structured responses.
Converse naturally with your MCP server. Test multi-turn prompts exactly as Claude would use them — no client wiring required.
Every JSON-RPC message — requests, responses, and notifications — logged and formatted in real time with full diff support.
Save inspection snapshots and replay them later. Share exact server states with teammates without needing a live connection.
Test OAuth 2.1 PKCE flows against any provider. Inspect tokens, scopes, and callback parameters at each step.
Found a bug or have a feature idea? Tell us — we read every submission.
Workflow
Paste your MCP server URL. Supports SSE, WebSocket, and Streamable HTTP.
Browse tools, resources, and prompts — call them live with a built-in editor.
Trace every message, save sessions, and share snapshots with your team.
Open the inspector now — no install, no config. Connect your MCP server URL and go.