x402 facilitator
x402 facilitator
A free public facilitator that checks and settles x402 payments and pays the network fee.
Point your x402 server at one URL and it can take USDC payments. No API key, no fee.
| URL | Networks | |
|---|---|---|
| Mainnet | https://facilitator.amnt.io | Hedera |
| Testnet | https://testnet.facilitator.amnt.io | Hedera testnet, Base Sepolia, Solana devnet |
What it does
A facilitator does the on-chain part of an x402 payment, so your server needs no wallet and no node:
POST /verifychecks a signed payment: signature, amount, recipient, the payer's balance. No money moves.POST /settleadds our signature as fee payer, sends it, and waits for the network to confirm.
The buyer only needs USDC. We pay the HBAR, ETH or SOL fee.
Why use it
- Same API as Coinbase's facilitator. Any x402 server library works; you change one URL.
- A paid-once payment can't be replayed. Both endpoints refuse a payment that already settled.
- Hedera Bazaar. Resources that ask to be discoverable are listed at
/discovery/resourcesafter their first payment. - Everything is public. The dashboard shows every settlement, with explorer links.
- Open source. MIT licensed. Run your own in minutes.
Base and Solana mainnet are not hosted here. Coinbase already settles those for free. Use the testnet to build, and self-host if you need your own Base or Solana mainnet facilitator.
Next: the quickstart.