Operational
Liminal x402 Facilitator
Open infrastructure for verifying and settling x402 payments. No API keys required.
Arbitrum
Base
Polygon
Gnosis
Avalanche
Codex
API Endpoints
V2
V1
GET
/supported
Supported kinds, signers & extensions
POST
/verify
Verify payment payload against requirements
POST
/settle
Settle payment on-chain
GET
/v1/x402/supported
List supported networks
POST
/v1/x402/verify
Verify payment authorization
POST
/v1/x402/settle
Settle payment on-chain
x402 Protocol
Go Middleware
Liminal