Inspect, debug and evaluate remote MCP servers in your browser
Paste an endpoint URL to test a remote MCP server. mcptest.io negotiates the protocol, handles authorization, and lists its tools, resources and prompts next to the raw JSON-RPC traffic.
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What a report covers
- Protocol negotiation across MCP 2026 stateless, 2025 stateful and legacy HTTP+SSE
- OAuth 2.1 with PKCE, bearer tokens and API keys
- CORS evidence from a real browser
- Tool, resource and prompt contracts
- Shareable reports
Connect a remote endpoint
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Awaiting connection
Connect a server and its capabilities, requests, and output will appear here.
Recent Connections
Suggested servers
Connect to a curated public endpoint and inspect the negotiated protocol.