Create Virtual Account V2

curl --request POST \
  --url https://sandbox.api.fin.com/v2/customers/{customer_id}/virtual-accounts \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "destination": {
    "wallet": "0x6e41e83d406185b358bd72111ab1206cb82eb67f",
    "currency": "USDC",
    "rail": "POLYGON"
  },
  "source": {
    "currency": "USD",
    "rail": "FEDWIRE"
  },
  "developer_fee": {
    "percentage": 0.1,
    "fixed": 0.1
  }
}
'

const url = 'https://sandbox.api.fin.com/v2/customers/{customer_id}/virtual-accounts';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    destination: {
      wallet: '0x6e41e83d406185b358bd72111ab1206cb82eb67f',
      currency: 'USDC',
      rail: 'POLYGON'
    },
    source: {currency: 'USD', rail: 'FEDWIRE'},
    developer_fee: {percentage: 0.1, fixed: 0.1}
  })
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

HttpResponse<String> response = Unirest.post("https://sandbox.api.fin.com/v2/customers/{customer_id}/virtual-accounts")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"destination\": {\n    \"wallet\": \"0x6e41e83d406185b358bd72111ab1206cb82eb67f\",\n    \"currency\": \"USDC\",\n    \"rail\": \"POLYGON\"\n  },\n  \"source\": {\n    \"currency\": \"USD\",\n    \"rail\": \"FEDWIRE\"\n  },\n  \"developer_fee\": {\n    \"percentage\": 0.1,\n    \"fixed\": 0.1\n  }\n}")
  .asString();

import requests

url = "https://sandbox.api.fin.com/v2/customers/{customer_id}/virtual-accounts"

payload = {
    "destination": {
        "wallet": "0x6e41e83d406185b358bd72111ab1206cb82eb67f",
        "currency": "USDC",
        "rail": "POLYGON"
    },
    "source": {
        "currency": "USD",
        "rail": "FEDWIRE"
    },
    "developer_fee": {
        "percentage": 0.1,
        "fixed": 0.1
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://sandbox.api.fin.com/v2/customers/{customer_id}/virtual-accounts"

	payload := strings.NewReader("{\n  \"destination\": {\n    \"wallet\": \"0x6e41e83d406185b358bd72111ab1206cb82eb67f\",\n    \"currency\": \"USDC\",\n    \"rail\": \"POLYGON\"\n  },\n  \"source\": {\n    \"currency\": \"USD\",\n    \"rail\": \"FEDWIRE\"\n  },\n  \"developer_fee\": {\n    \"percentage\": 0.1,\n    \"fixed\": 0.1\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "data": {
    "id": "024e784b-bc27-4a4c-82ee-80000fbf53c5",
    "status": "PROCESSING",
    "customer_id": "0fb72092-22a8-4df8-a6d9-1a28f86b7d44",
    "created_at": "2026-04-04T11:05:20.963676Z",
    "rfi": null
  }
}

{
  "message": "Authentication failed"
}

{
  "errors": [
    {
      "customer_id": "c1f4a8e2-3b57-4d09-9a61-7e2b5c8d4f30",
      "source": {
        "currency": "USD",
        "rail": "FEDWIRE"
      }
    },
    {
      "virtual_account_id": "9d2b7f41-6c8a-45e3-b071-2fa93c5e8d16"
    }
  ],
  "message": "Virtual account already exists for the given parameters."
}