I submitted an MCP server to Claude and OpenAI, got rejected from OpenAI after 4 weeks for a stupid OAuth redirect bug. Fix took an hour. Resubmit wait was another 3 weeks.

Every check they run is something you can test locally in 15 seconds, so I built preflight for everyone to use. FREE.

So: https://m8ven.ai/preflight — paste your URL, get the report. Free, no signup, probes your live endpoint only (doesn't touch your code).

Built this out of M8ven, which I'm working on as an trust layer for the agent economy. Keeping Preflight free because the rejection loop is a stupid tax on people shipping.

Would love to hear failure modes I'm not catching.