MCPSpec – Ship reliable MCP servers without writing test code

Show HN: MCPSpec – Ship reliable MCP servers without writing test code

MCPSpec – Ship reliable MCP servers without writing test code is active in the show hn launch space.

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Hi HN,I've been building MCPSpec, an open-source CLI for MCP server reliability. Record sessions, generate mock servers, catch Tool Poisoning, and fail your CI build when something's wrong — without writing test code.There are ways to validate MCP servers today — the MCP Inspector, ad-hoc SDK scripts, unit tests for server internals — but nothing that handles regression detection, security auditing, mock generation, and CI pass/fail checks in one tool. MCPSpec does that:1. Record a session against your real server, replay it after changes to catch regressions2. Generate a standalone .js mock from any recording — no API keys, no live server needed in CI3. Security audit with 8 rules including

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Website: light-handle.github.io/mcpspec