About the PayAI x402 Facilitator

What this service is

This origin runs the PayAI x402 facilitator: the production service that verifies and settles x402 stablecoin payments on behalf of merchants and the agents that pay them. When a server answers a request with HTTP 402 Payment Required, an x402 client signs a payment, and this service checks that signature and moves the funds on-chain.

It settles on Solana, Base, Polygon, Avalanche, Arbitrum, Sei, X Layer, and SKALE. On Solana it sponsors the transaction fee, so a payer needs only USDC and no SOL.

Who operates it

PayAI Network, LLC, a Delaware limited liability company. Use is governed by the terms of service; data handling is described in the privacy policy.

General enquiries, support, sales, and security reports: info@payai.network. Legal and privacy: legal@payai.network. Vulnerability disclosure details are in security.txt.

What it does not do

The facilitator never custodies merchant balances. A settlement moves funds directly from the payer to the address the merchant advertised in its payment requirements; the facilitator signs and broadcasts the transaction and, on Solana, pays the network fee.

It is not a payment processor for consumer checkout. No card payments, no fiat payouts, no bank transfers, no subscription billing.

Status and support

• GET /health — liveness of this service.
• GET /supported — which chains and schemes are live right now.
• GET /discovery/stats — settlement volume and facilitator uptime.
• Developer reference — how to call the API.
• Documentation — quickstarts and protocol reference.