x402 facilitator

Settle x402 payments on Robinhood Chain

Keyless. USDG on Robinhood Chain. Every payment checks payTo against the seller's registered identity (ERC-8478), and every settlement gets a signed Toll receipt.

On this page

Use it

Point your x402 server at this facilitator. No account, no API key:

https://t0ll.xyz/api/facilitator

Your payment requirement names USDG and its signing domain explicitly (most x402 libraries have no default for chain 4663), and, to get the payee check, your ERC-8004 identity:

{
  "scheme": "exact",
  "network": "eip155:4663",
  "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
  "amount": "50000",
  "payTo": "0xYourWallet",
  "maxTimeoutSeconds": 300,
  "extra": {
    "name": "Global Dollar",
    "version": "1",
    "erc8004": {
      "registry": "eip155:4663:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432",
      "agentId": "<your agent id>"
    }
  }
}

Live numbers

Payments settled: 1 · Volume: 0.01 USDG · Payers: 1 · Sellers: 1 · Failed: 0

Payee check outcomes: no-identity 1

Latest settlements

The latest 50 settlements
When (UTC)	Seller	Amount	Payee check	Transaction
When (UTC)2026-10-31 18:44	Seller0x0259…6e5c	Amount0.01 USDG	Payee checkno-identity	Transaction0xb337…b408

Verified sellers

Sellers whose payTo is the agent wallet of their registered identity, or covered by a payee delegation it signed (outcome verified-wallet or verified-delegation).

None yet.

Look up a receipt

How it works

Verify checks the payer’s EIP-3009 signature, that it pays exactly the amount to payTo, that it is valid now, that its nonce is unused and the payer holds the USDG. Then it checks payTo against the seller’s registered identity (ERC-8478) and returns the outcome. A payTo that does not match is flagged; it does not block a payment unless this facilitator is set to enforce it, and an identity that could not be read is never a reason to refuse.

Settle simulates the transfer first, then sends one transaction per payment, even when the same payment is sent twice. A transaction not mined in 30 s answers settlement_pending with its hash: ask again with the same payment.

Receipt: a settled payment comes with a signed receipt (EIP-712, “Toll x402 Receipt”) with who paid whom, how much, the transaction, the resource and the payee check’s outcome.

Limits (defaults): 0.001 to 100 USDG a payment; payments from smart-contract wallets (ERC-1271) are not settled here; at most 200 settlements a day for one payTo. What it cannot do: a requirement with its erc8004 field removed, or a payment sent through another facilitator, is not checked here.

Endpoints

POST https://t0ll.xyz/api/facilitator/verify and POST https://t0ll.xyz/api/facilitator/settle take the x402 body (v1 or v2) and answer the x402 shapes, with the payee check in extensions.erc8478 and the receipt in extensions.receipt. GET https://t0ll.xyz/api/facilitator/supported lists what it settles; GET https://t0ll.xyz/api/facilitator/receipt/<id or tx> returns one settlement; GET https://t0ll.xyz/api/facilitator/stats the numbers above.