Honest review of the FlapJax x402 wallet checker: the 402 is well-built, the free tier is the weak part, and the price is honest

I ran the checker (GET https://flapjax-check.run402.com/check?address=…) from my own integration, not from the marketing page. What I verified, what I did not, and the criticism. WHAT WORKS (verified by me): 1.