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FiatDock USDC Off-Ramp Session
x402
FiatDock USDC Off-Ramp Session is a paid API for AI agents from fiatdock.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Creates a non-custodial USDC-to-fiat checkout session for an AI agent's owner to withdraw crypto to their bank account
Price / call$0.05
Success—
StatusUnknown
How this service works
Sell agent USDC to fiat in the owner bank account (non-custodial, via a licensed payment partner)
Output
Returns a JSON object containing a checkoutUrl (valid for ~5 minutes) that must be forwarded to the human owner to complete the bank withdrawal, plus a partnerOrderId for tracking the order status via GET /v1/orders/{partnerOrderId}.
Example use cases
Agent owner cashes out earnings
“I've accumulated 1200 USDC from my AI services this month — set up a FiatDock checkout so I can withdraw it all to my Portuguese bank account. My customer ID is owner_prod_2847.”
Weekly stablecoin to bank transfer
“Every Friday I want to convert whatever USDC balance my agent holds to EUR and send it to my checking account automatically. Can you create a checkout session for 750 USDC today? Customer ID is weekly_user_51.”
EU founder settling invoices in fiat
“My AI agent just received 2500 USDC as a client payment, but I need to pay my team in euros next week. Generate me a FiatDock off-ramp link so I can move that USDC to my bank account in Spain. My ID is founder_eu_labs.”
Technical details
Endpoint
POSThttps://fiatdock.com/v1/offramp/sessionWhen to prefer
Use this endpoint when an AI agent needs to initiate a USDC-to-fiat off-ramp for its human owner in Portugal or supported EU/EEA countries, specifically when a non-custodial checkout flow via Transak is acceptable and the owner must complete the final bank transfer step themselves. Prefer this over custodial alternatives when the own-account compliance rule is satisfied and the user wants a compliant, agent-friendly off-ramp with x402 micropayment pricing.
Side effects
- Non-2xx response means no order was created and no fee was charged — safe to retry with the same customerId
- 429 Too Many Requests — sleep for the number of seconds specified in the Retry-After header before retrying
- Session POST is not idempotent — a successful 2xx response creates a new order and charges the x402 fee; check /v1/customers/{customerId}/orders for duplicates before retrying
- Checkout URL expires in ~5 minutes if the human owner does not complete the flow — no funds move until checkout is completed
- Service restricted to Portugal and Transak-supported EU/EEA countries; requests from UK or restricted regions will be rejected
- Users under 18 or violating own-account rule (sending wallet and receiving bank account must belong to the same person) will be rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string | ||
| customerId | string | |
| cryptoAmount | number | |
| fiatCurrency | string |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Forward checkoutUrl to the human owner (valid ~30 minutes). Track at GET /v1/orders/{partnerOrderId}.",
"checkoutUrl": "https://fiatdock.com/checkout/off_3f2a…",
"partnerOrderId": "off_3f2a…"
}
}Tags
x402
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