Free Developer Tool · No Account Required
Inspect & debug any MCP server.
Zero-install interactive testbed for Model Context Protocol over Stateless Streamable HTTP and SSE. Test live tool schemas, execute JSON-RPC payloads, and debug prompts in real time.
Developer Architecture
Engineered for high-concurrency MCP tooling.
Zero friction in local development, sub-millisecond execution in production with Karada's Go runtime engine.
Zero Install Web Testbed
No need to install npm packages, manage Node runtimes, or configure local port forwarding tunnels. Test remote MCP servers right in your browser.
Stateless Streamable HTTP & SSE
Full support for 2026 Stateless Streamable HTTP transport specifications as well as SSE endpoints with bidirectional JSON-RPC streaming.
Deploy with Karada.ai Engine
Auto-compile your OpenAPI specs into Go MCP servers or connect official marketplace integrations behind one unified gateway.
FAQ
Frequently asked questions
How do I test my own MCP server?
In the inspector window above, select Streamable HTTP or SSE in the transport dropdown, paste your live endpoint URL (e.g. https://your-domain.com/mcp), and click Connect. The inspector will query tools/list, resources/list, and prompts/list automatically.
Does Karada store my credentials or inspect payload contents?
No. When you test endpoints in the online inspector, all requests are executed directly from your browser sandbox session. Karada does not log or persist payload contents from unauthenticated testbed runs.
What is Stateless Streamable HTTP transport?
Stateless Streamable HTTP is the modern 2026 standard for Model Context Protocol. It allows standard POST /mcp requests with optional streaming Server-Sent Events responses without requiring persistent WebSocket connections or stateful session locks.