Show HN: Test-MCP, end-to-end testing for MCP servers

We built this while developing an MCP server internally and got tired of manually testing changes by chatting. Unit and integration tests passed, but issues still appeared once a real MCP client and an LLM were in the loop.

test-mcp is a small, headless MCP client for running end-to-end test flows against MCP servers using real LLMs. It’s early, and I’m mainly looking for feedback from MCP builders.