For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
RegisterLoginSandbox Login
GuidesRecipesAPI Reference
GuidesRecipesAPI Reference
  • API Reference
    • POSTGets USDC/SBC/EuroE on testnets
      • POSTAdd Interac Account
      • POSTCreate Bank Account
      • POSTCreate Bank Account (v2)
      • POSTCreate Debit Card
      • POSTCreate Iban Account
      • POSTCreate Pix Account
      • POSTCreate Transactions
      • DELDelete Withdrawer Bank Account
      • DELDelete Withdrawer Bank Account
      • DELDelete Withdrawer Bank Account
      • DELDelete Withdrawer Bank Account
      • DELDelete Withdrawer Card
      • DELDelete Withdrawer EFT Account
      • DELDelete Withdrawer Iban Account
      • DELDelete Withdrawer Pix Account
      • GETGet Balances
      • POSTGet Message (EVM USDC/SBC/EuroE only)
      • GETGet Quote
      • GETGet Quote Exact Out
      • GETGet Withdrawer
      • GETGet Withdrawer History
      • POSTLink Paypal Account
      • POSTLink Venmo Account
      • POSTRegister Business
      • POSTRegister User
      • POSTRegister User Via Attested KYC
      • POSTRegister User Via Document
      • POSTRegister User Via Share Token
      • POSTSend Gasless Withdraw Transaction (EVM USDC/SBC/EuroE only)
      • POSTValidate KYC Information
LogoLogo
RegisterLoginSandbox Login
API ReferenceWithdraw

Send Gasless Withdraw Transaction (EVM USDC/SBC/EuroE only)

POST
https://api-sandbox.coinflow.cash/api/withdraw/evm/transaction
POST
/api/withdraw/evm/transaction
$curl -X POST https://api-sandbox.coinflow.cash/api/withdraw/evm/transaction \
>     -H "x-coinflow-auth-wallet: <apiKey>" \
>     -H "Content-Type: application/json" \
>     -d '{
>  "merchantId": "merchant_abc123",
>  "token": {
>    "mint": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
>    "decimals": 6
>  },
>  "amount": 150.75,
>  "speed": "asap",
>  "account": "0x4B0897b0513fdc7C541B6d9D7E929C4e5364D2dB",
>  "evmTransferAuthorizationData": {
>    "data": "0x7f8b9c3a2d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a"
>  }
>}'
1{
2  "hash": "0x5e1b3f4a6c7d8e9f0a1b2c3d4e5f67890123456789abcdef0123456789abcdef"
3}

Send a gasless USDC withdraw transaction to the blockchain. The gas for the transaction can either be paid by the user or by the merchant, depending on your merchant settings.

This is only allowed for withdrawing USDC/SBC/EuroE on EVM chains.

Was this page helpful?
Previous

Validate KYC Information

Next
Built with

Authentication

x-coinflow-auth-walletstring
The web3 wallet of the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
x-coinflow-auth-blockchainstring
The blockchain associated with the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
OR
x-coinflow-auth-session-keystring
The session key generated for the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key

Request

This endpoint expects an object.
merchantIdstringRequired
tokenobjectRequired
From T, pick a set of properties whose keys are in the union K
amountdoubleRequired
speedenumRequired
accountstring or objectRequired

One of:

  1. The token of the bank account/card that the user is withdrawing to
  2. An Apple Pay Response Object
evmTransferAuthorizationDataobjectRequired
bankAccountDetailsobjectOptional
userLocationobjectOptional

End-user geographic coordinates captured at the moment of the withdrawal request. Consumed by BlockingRuleMethod.GEOLOCATION enforcement.

Replay-of-different-coords bypass is prevented server-side: the first resolved {country, state} for a given (merchant, user) pair is pinned in Redis, and subsequent requests are evaluated against that pinned value regardless of the lat/lng they submit.

addressobjectOptional

Response

Ok
hashstring

Errors

412
Precondition Failed Error

The web3 wallet of the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key

The blockchain associated with the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key

The session key generated for the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key