My AI assistant kept saying "all tests pass". So I built a gate that checks. A developer built BuildProof, a command-line tool that sits between AI coding agents and a repository to verify that claimed test passes are real, blocking a pass when tests were never run, skipped, or edited to succeed. The tool flips the common CI fail-open default to fail-closed, is installable via npm, and is offered with a 14-day free trial starting at $15 per month. If you code with AI assistants, you've probably seen this: the agent says "done, all tests pass", and then you find out the tests never ran, were skipped, or were quietly edited so they would pass. I hit this often enough that I stopped trusting the claim and built a tool to check it: BuildProof . BuildProof is a CLI that sits between the AI and your repo: Most CI setups fail open: if a step is missing or misconfigured, the pipeline can still go green. With AI agents writing more of the code, that gap gets exploited, usually by accident. BuildProof flips the default. No real proof, no pass. npm i -g buildproof There's a 14-day free trial, and plans start at $15/month. Website: https://buildproof.mgrprosnetwork.com https://buildproof.mgrprosnetwork.com I'd really like feedback, especially if you can think of ways an AI agent could still sneak a fake "pass" past it. Tell me in the comments.