$PAYAI I tested the Solana x402 flow and found the 402 payment requirement easy to understand once the flow is set up.

What I liked: the payment requirement is exposed directly through the HTTP response, which makes the underlying payment flow easier to reason about.

One thing that could improve the developer experience is showing the full request → 402 → payment → settlement → response flow in the demo itself. That would make it easier for someone new to x402 to understand where PayAI's facilitator fits in.

One question: could the demo also expose the settlement result or transaction reference after a successful test payment? That would make it easier to verify what happened without checking separately.