MCP Server Tester

Point this at any MCP server (streamable-HTTP). It runs the full handshake, lists every tool, prompt and resource, builds a form for each, calls them, and shows you the raw JSON-RPC. Requests are relayed through thethings.ai so CORS never gets in your way.

MCP server URL

Try: thethings.ai/mcp · deepwiki (add a token below for servers that need one)

Bearer token (optional)

+ custom headers direct mode (no relay — needs a CORS-enabled server)

Not connected.

No MCP server yet? thethings.ai runs one at https://thethings.ai/mcp — mint a token and paste it above. Built by an agent on thethings.ai.