curl --request POST \
  --url https://api-sandbox.circle.com/v1/businessAccount/banks/pix \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "idempotencyKey": "ba943ff1-ca16-49b2-ba55-1057e70ca5c7",
  "name": "CIRCLE INTERNET FINANCIAL INC",
  "accountNumber": "322286803",
  "ispb": "68033222",
  "branchCode": "123",
  "taxId": "57112345675712",
  "accountType": "checking"
}
'

import requests

url = "https://api-sandbox.circle.com/v1/businessAccount/banks/pix"

payload = {
    "idempotencyKey": "ba943ff1-ca16-49b2-ba55-1057e70ca5c7",
    "name": "CIRCLE INTERNET FINANCIAL INC",
    "accountNumber": "322286803",
    "ispb": "68033222",
    "branchCode": "123",
    "taxId": "57112345675712",
    "accountType": "checking"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    idempotencyKey: 'ba943ff1-ca16-49b2-ba55-1057e70ca5c7',
    name: 'CIRCLE INTERNET FINANCIAL INC',
    accountNumber: '322286803',
    ispb: '68033222',
    branchCode: '123',
    taxId: '57112345675712',
    accountType: 'checking'
  })
};

fetch('https://api-sandbox.circle.com/v1/businessAccount/banks/pix', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api-sandbox.circle.com/v1/businessAccount/banks/pix",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'idempotencyKey' => 'ba943ff1-ca16-49b2-ba55-1057e70ca5c7',
    'name' => 'CIRCLE INTERNET FINANCIAL INC',
    'accountNumber' => '322286803',
    'ispb' => '68033222',
    'branchCode' => '123',
    'taxId' => '57112345675712',
    'accountType' => 'checking'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api-sandbox.circle.com/v1/businessAccount/banks/pix"

	payload := strings.NewReader("{\n  \"idempotencyKey\": \"ba943ff1-ca16-49b2-ba55-1057e70ca5c7\",\n  \"name\": \"CIRCLE INTERNET FINANCIAL INC\",\n  \"accountNumber\": \"322286803\",\n  \"ispb\": \"68033222\",\n  \"branchCode\": \"123\",\n  \"taxId\": \"57112345675712\",\n  \"accountType\": \"checking\"\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))

}

HttpResponse<String> response = Unirest.post("https://api-sandbox.circle.com/v1/businessAccount/banks/pix")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"idempotencyKey\": \"ba943ff1-ca16-49b2-ba55-1057e70ca5c7\",\n  \"name\": \"CIRCLE INTERNET FINANCIAL INC\",\n  \"accountNumber\": \"322286803\",\n  \"ispb\": \"68033222\",\n  \"branchCode\": \"123\",\n  \"taxId\": \"57112345675712\",\n  \"accountType\": \"checking\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api-sandbox.circle.com/v1/businessAccount/banks/pix")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"idempotencyKey\": \"ba943ff1-ca16-49b2-ba55-1057e70ca5c7\",\n  \"name\": \"CIRCLE INTERNET FINANCIAL INC\",\n  \"accountNumber\": \"322286803\",\n  \"ispb\": \"68033222\",\n  \"branchCode\": \"123\",\n  \"taxId\": \"57112345675712\",\n  \"accountType\": \"checking\"\n}"

response = http.request(request)
puts response.read_body

{
  "data": {
    "id": "b8627ae8-732b-4d25-b947-1df8f4007a29",
    "status": "pending",
    "description": "BTG Pactual ****0010",
    "trackingRef": "CIR13FB13A",
    "transferTypesInfo": {
      "pix": {
        "currencies": [
          "BRL"
        ]
      }
    },
    "riskEvaluation": {
      "decision": "approved",
      "reason": "3000"
    },
    "policyEvaluation": {
      "status": "approved"
    },
    "fingerprint": "eb170539-9e1c-4e92-bf4f-1d09534fdca2",
    "createDate": "2020-04-10T02:13:30.000Z",
    "updateDate": "2020-04-10T02:13:30.000Z"
  }
}

{
  "code": 400,
  "message": "Bad request."
}

{
  "code": 401,
  "message": "Malformed authorization."
}