When building MCP-based platforms, testing usually means manually crafting JSON-RPC requests or writing custom clients.

I built MCP Smoke as a lightweight test harness where you can:

Send real MCP requests using plain English Simulate real user/agent interactions Test tools, prompts, and resources end-to-end Plug in API keys and hit actual MCP servers

It’s useful if you're building MCP platforms and want:

Faster iteration during development Realistic testing instead of mocked flows Observability/analytics on how your MCP server behaves

Would love feedback on what kind of test scenarios or validations should be added.