curl --request POST \
  --url https://api.augustus.com/v1/counterparties \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "financial_address": {
    "type": "iban",
    "iban": "DE89370400440532013000",
    "account_holder_name": "Acme Sandbox Ltd.",
    "bic": "COBADEFFXXX"
  },
  "name": "<string>",
  "date_of_birth": "2023-12-25",
  "is_self_owned": false,
  "metadata": {
    "invoice_id": "INV-2026-0042"
  }
}
'

import requests

url = "https://api.augustus.com/v1/counterparties"

payload = {
    "financial_address": {
        "type": "iban",
        "iban": "DE89370400440532013000",
        "account_holder_name": "Acme Sandbox Ltd.",
        "bic": "COBADEFFXXX"
    },
    "name": "<string>",
    "date_of_birth": "2023-12-25",
    "is_self_owned": False,
    "metadata": { "invoice_id": "INV-2026-0042" }
}
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    financial_address: {
      type: 'iban',
      iban: 'DE89370400440532013000',
      account_holder_name: 'Acme Sandbox Ltd.',
      bic: 'COBADEFFXXX'
    },
    name: '<string>',
    date_of_birth: '2023-12-25',
    is_self_owned: false,
    metadata: {invoice_id: 'INV-2026-0042'}
  })
};

fetch('https://api.augustus.com/v1/counterparties', 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.augustus.com/v1/counterparties",
  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([
    'financial_address' => [
        'type' => 'iban',
        'iban' => 'DE89370400440532013000',
        'account_holder_name' => 'Acme Sandbox Ltd.',
        'bic' => 'COBADEFFXXX'
    ],
    'name' => '<string>',
    'date_of_birth' => '2023-12-25',
    'is_self_owned' => false,
    'metadata' => [
        'invoice_id' => 'INV-2026-0042'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-key>"
  ],
]);

$response = curl_exec($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.augustus.com/v1/counterparties"

	payload := strings.NewReader("{\n  \"financial_address\": {\n    \"type\": \"iban\",\n    \"iban\": \"DE89370400440532013000\",\n    \"account_holder_name\": \"Acme Sandbox Ltd.\",\n    \"bic\": \"COBADEFFXXX\"\n  },\n  \"name\": \"<string>\",\n  \"date_of_birth\": \"2023-12-25\",\n  \"is_self_owned\": false,\n  \"metadata\": {\n    \"invoice_id\": \"INV-2026-0042\"\n  }\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	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.augustus.com/v1/counterparties")
  .header("Idempotency-Key", "<idempotency-key>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"financial_address\": {\n    \"type\": \"iban\",\n    \"iban\": \"DE89370400440532013000\",\n    \"account_holder_name\": \"Acme Sandbox Ltd.\",\n    \"bic\": \"COBADEFFXXX\"\n  },\n  \"name\": \"<string>\",\n  \"date_of_birth\": \"2023-12-25\",\n  \"is_self_owned\": false,\n  \"metadata\": {\n    \"invoice_id\": \"INV-2026-0042\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.augustus.com/v1/counterparties")

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

request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"financial_address\": {\n    \"type\": \"iban\",\n    \"iban\": \"DE89370400440532013000\",\n    \"account_holder_name\": \"Acme Sandbox Ltd.\",\n    \"bic\": \"COBADEFFXXX\"\n  },\n  \"name\": \"<string>\",\n  \"date_of_birth\": \"2023-12-25\",\n  \"is_self_owned\": false,\n  \"metadata\": {\n    \"invoice_id\": \"INV-2026-0042\"\n  }\n}"

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

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "type": "counterparty",
  "name": "<string>",
  "entity_type": "business",
  "physical_address": {
    "line_1": "<string>",
    "line_2": "<string>",
    "city": "<string>",
    "postal_code": "<string>",
    "state": "<string>",
    "country_code": "DE"
  },
  "financial_address": {
    "type": "iban",
    "iban": "DE89370400440532013000",
    "account_holder_name": "Acme Sandbox Ltd.",
    "bic": "COBADEFFXXX"
  },
  "date_of_birth": "2023-12-25",
  "is_self_owned": true,
  "blocked": true,
  "metadata": {
    "invoice_id": "INV-2026-0042"
  }
}