x402 on Elysium

Charge per request in USDC on Elysium. The bridged USDC there supports permits but not the transfer authorizations x402 normally uses, so Quaestor runs a facilitator with its own scheme for it: exact-permit.

Scheme
exact-permit
Network
elysium
Services listed
Soon
Settles
Payer to payee

How a payment works

Settled straight from payer to payee
HTTP 402

402

Your server answers with the price, the payee and the settler contract.

permit + payment

Two signatures

The payer signs a permit for exactly the price, and a payment that fixes payee, amount, resource and a one-time nonce.

POST /verify

Verify

The facilitator checks both signatures, the balance and the nonce, and simulates the transfer.

POST /settle

Settle

It relays both to the settler, which moves USDC from payer to payee in one transaction and never holds a balance.

Facilitator

Base URL
https://engine-production-3f44.up.railway.app/v1/x402
Network
elysium
Verify
POST /verify
Settle
POST /settle
Supported kinds
GET /supported
Scheme
exact-permit

Directory

Paid services on this facilitator
ServiceEndpointPriceStatusSettledChecked

No services listed yet. The signal market is the first user of this facilitator; add yours below.

List a service

Listed only after the endpoint answers 402 with an exact-permit offer on this network.