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Read release notesSending funds from your Circle Account to an external bank account is one of the most basic primitives (building blocks) enabled by the APIs. This quickstart walks through sending USDC USD externally. You can follow the same steps when sending EURC EUR as well.
Circle's APIs use API keys as the mechanism to authenticate client requests. The API key must be set in the Authorization header of the request sent from your backend server. The format of the header is Bearer secret-key-value.
To obtain an API key for the sandbox environment, simply create an account and generate a new key in settings - it only takes a few seconds.
Once you have generated your API key, record it in a secure place.
To send account funds externally, you will need a bank account to send to.
You can use the create a wire bank account API endpoint to link a sample bank account.
NOTE - the parameters listed below are slightly different for US Bank accounts, Non-US bank accounts - IBAN supported and Non-US bank accounts - non-IBAN supported. Please see the above link for details.
Request
curl --request POST \\
--url https\://api-sandbox.circle.com/v1/businessAccount/banks/wires \\
--header 'accept: application/json' \\
--header 'authorization: Bearer ${YOUR\_API\_KEY}' \\
--header 'content-type: application/json' \\
--data '
{
"billingDetails": {
"name": "Satoshi Nakamoto",
"city": "Boston",
"country": "US",
"line1": "100 Money Street",
"district": "MA",
"postalCode": "01234"
},
"bankAddress": {
"bankName": "SAN FRANCISCO",
"city": "SAN FRANCISCO",
"country": "US",
"line1": "100 Money Street",
"district": "CA"
},
"idempotencyKey": "ba943ff1-ca16-49b2-ba55-1057e70ca5c7",
"accountNumber": "12340010",
"routingNumber": "121000248"
}
'
RESPONSE
{
"data": {
"id": "9d1fa351-b24d-442a-8aa5-e717db1ed636",
"status": "pending",
"description": "WELLS FARGO BANK, NA ****0010",
"trackingRef": "CIR2GKYL4B",
"fingerprint": "a9a71b77-d83d-4fbc-997f-41a33550c594",
"virtualAccountEnabled": true,
"billingDetails": {
"name": "Satoshi Nakamoto",
"line1": "100 Money Street",
"city": "Boston",
"postalCode": "01234",
"district": "MA",
"country": "US"
},
"bankAddress": {
"bankName": "WELLS FARGO BANK, NA",
"line1": "100 Money Street",
"city": "SAN FRANCISCO",
"district": "CA",
"country": "US"
},
"createDate": "2023-11-04T20:02:21.062Z",
"updateDate": "2023-11-04T20:02:21.062Z"
}
}
If you haven't done so already, make sure you fund your account for testing. You can do this one of two ways: by using the Circle Payments API to accept a payment, or by receiving an external USDC transfer from a faucet or other source.
Sufficient Balance Requirement
You can transfer any amount you want if your account holds sufficient balance to cover the transfer.
To send funds externally, you can use the create a payout API endpoint.
REQUEST
curl --request POST \\
--url https\://api-sandbox.circle.com/v1/businessAccount/payouts \\
--header 'accept: application/json' \\
--header 'authorization: Bearer ${YOUR\_API\_KEY}' \\
--header 'content-type: application/json' \\
--data '
{
"destination": {
"type": "wire",
"id": "9d1fa351-b24d-442a-8aa5-e717db1ed636"
},
"amount": {
"currency": "USD",
"amount": "1.00"
},
"idempotencyKey": "ba943ff1-ca16-49b2-ba55-1057e70ca5c7"
}
'
RESPONSE
{
"data": {
"id": "9cf38c76-cac4-40d8-a516-f46e9a610a85",
"amount": {
"amount": "1.00",
"currency": "USD"
},
"status": "pending",
"sourceWalletId": "1016875042",
"destination": {
"type": "wire",
"id": "9d1fa351-b24d-442a-8aa5-e717db1ed636",
"name": "WELLS FARGO BANK, NA ****0010"
},
"createDate": "2023-11-04T20:04:41.669Z",
"updateDate": "2023-11-04T20:04:41.669Z"
}
}
You can use the get a payout API endpoint to retrieve details about the status of the transaction. You can use it as in the command below.
REQUEST
curl --request GET \\
--url https\://api-sandbox.circle.com/v1/businessAccount/payouts/9cf38c76-cac4-40d8-a516-f46e9a610a85 \\
--header 'accept: application/json' \\
--header 'authorization: Bearer ${YOUR\_API\_KEY}'
RESPONSE
{
"data": {
"id": "9cf38c76-cac4-40d8-a516-f46e9a610a85",
"amount": {
"amount": "1.00",
"currency": "USD"
},
"status": "pending",
"sourceWalletId": "1016875042",
"destination": {
"type": "wire",
"id": "9d1fa351-b24d-442a-8aa5-e717db1ed636",
"name": "WELLS FARGO BANK, NA ****0010"
},
"createDate": "2023-11-04T20:04:41.669Z",
"updateDate": "2023-11-04T20:04:41.778Z"
}
}
For Circle Mint Singapore Customers
You must verify all recipients of your transfers using the UI in the Circle Console.
🎉 Congratulations. You have successfully sent fiat using Circle's APIs.
After experimenting with our APIs, you’ll want to start building test integrations in sandbox prior to moving into production. Start by applying for a Circle Mint account. We'll be happy to walk you through the next steps.