Nice! Do you run the facilitator yourself in this PoC? Or do you just implement the x402 schematics?

Yes, the merchant implements it. For on-chain payments, a facilitator makes a lot of sense since someone needs to handle submission and confirmation on-chain. But with Lightning being inherently peer-to-peer, I’m not sure a facilitator adds much value. Payment verification can already be handled directly by the merchant’s node, so introducing a facilitator might just add an extra layer rather than solve a real problem.

A facilitator is not mandatory in x402 either, so compatibility is not an issue. However, it may have value in terms of making integration easier.