<?php

// Get your API credentials from your billware customer area
$apiAppId  = 'your-app-id';
$apiSecret = 'your-api-secret';

$payload = json_encode([
    'customer_type' => 'billware',
    'is_business_client' => 0,
    'bill_title' => 'Mister',
    'bill_firstname' => 'Max',
    'bill_lastname' => 'Mustermann',
    'bill_street' => 'Musterstraße 12',
    'bill_zipcode' => '12345',
    'bill_city' => 'Musterstadt',
    'bill_country' => 'de',
    'bill_phone' => '+49 123 4567890',
    'bill_email' => 'max.mustermann@example.com',
    'divergent_delivery_address' => 1,
    'delivery_title' => 'Mister',
    'delivery_firstname' => 'Max',
    'delivery_lastname' => 'Mustermann',
    'delivery_street' => 'Lieferweg 5',
    'delivery_zipcode' => '54321',
    'delivery_city' => 'Lieferstadt',
    'delivery_country' => 'de',
    'delivery_phone' => '+49 987 6543210',
    'account_iban' => 'DE89370400440532013000',
    'account_bic' => 'COBADEFFXXX',
    'account_bank' => 'Commerzbank',
    'account_paypal' => 'max.paypal@example.com',
    'user_note' => 'Kunde möchte Rechnung nur per E-Mail erhalten',
    'public_authority_id' => '',
]);

// The HMAC is calculated over the exact request body that is sent
$hmac = base64_encode(hash_hmac('sha256', $payload, $apiSecret, true));

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL            => 'https://www.billware.de/api/v1',
    CURLOPT_POST           => true,
    CURLOPT_POSTFIELDS     => $payload,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'X-Bw-Hmac: '.$apiAppId.':'.$hmac,
        'X-Bw-Method: customer.create',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($curl);
curl_close($curl);

print_r(json_decode($response, true));

import crypto from 'node:crypto';

// Get your API credentials from your billware customer area
const apiAppId  = 'your-app-id';
const apiSecret = 'your-api-secret';

const payload = JSON.stringify({
    "customer_type": "billware",
    "is_business_client": 0,
    "bill_title": "Mister",
    "bill_firstname": "Max",
    "bill_lastname": "Mustermann",
    "bill_street": "Musterstraße 12",
    "bill_zipcode": "12345",
    "bill_city": "Musterstadt",
    "bill_country": "de",
    "bill_phone": "+49 123 4567890",
    "bill_email": "max.mustermann@example.com",
    "divergent_delivery_address": 1,
    "delivery_title": "Mister",
    "delivery_firstname": "Max",
    "delivery_lastname": "Mustermann",
    "delivery_street": "Lieferweg 5",
    "delivery_zipcode": "54321",
    "delivery_city": "Lieferstadt",
    "delivery_country": "de",
    "delivery_phone": "+49 987 6543210",
    "account_iban": "DE89370400440532013000",
    "account_bic": "COBADEFFXXX",
    "account_bank": "Commerzbank",
    "account_paypal": "max.paypal@example.com",
    "user_note": "Kunde möchte Rechnung nur per E-Mail erhalten",
    "public_authority_id": ""
});

// The HMAC is calculated over the exact request body that is sent
const hmac = crypto.createHmac('sha256', apiSecret).update(payload).digest('base64');

const response = await fetch('https://www.billware.de/api/v1', {
    method: 'POST',
    headers: {
        'X-Bw-Hmac': `${apiAppId}:${hmac}`,
        'X-Bw-Method': 'customer.create',
        'Content-Type': 'application/json'
    },
    body: payload
});

console.log(await response.json());

import base64
import hashlib
import hmac
import json

import requests

# Get your API credentials from your billware customer area
api_appid  = "your-app-id"
api_secret = "your-api-secret"

payload = json.dumps({
    "customer_type": "billware",
    "is_business_client": 0,
    "bill_title": "Mister",
    "bill_firstname": "Max",
    "bill_lastname": "Mustermann",
    "bill_street": "Musterstraße 12",
    "bill_zipcode": "12345",
    "bill_city": "Musterstadt",
    "bill_country": "de",
    "bill_phone": "+49 123 4567890",
    "bill_email": "max.mustermann@example.com",
    "divergent_delivery_address": 1,
    "delivery_title": "Mister",
    "delivery_firstname": "Max",
    "delivery_lastname": "Mustermann",
    "delivery_street": "Lieferweg 5",
    "delivery_zipcode": "54321",
    "delivery_city": "Lieferstadt",
    "delivery_country": "de",
    "delivery_phone": "+49 987 6543210",
    "account_iban": "DE89370400440532013000",
    "account_bic": "COBADEFFXXX",
    "account_bank": "Commerzbank",
    "account_paypal": "max.paypal@example.com",
    "user_note": "Kunde möchte Rechnung nur per E-Mail erhalten",
    "public_authority_id": "",
})

# The HMAC is calculated over the exact request body that is sent
signature = base64.b64encode(
    hmac.new(api_secret.encode(), payload.encode(), hashlib.sha256).digest()
).decode()

response = requests.post(
    "https://www.billware.de/api/v1",
    data=payload,
    headers={
        "X-Bw-Hmac": f"{api_appid}:{signature}",
        "X-Bw-Method": "customer.create",
        "Content-Type": "application/json",
    },
)

print(response.json())

using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Text.Json;

// Get your API credentials from your billware customer area
const string apiAppId  = "your-app-id";
const string apiSecret = "your-api-secret";

var payload = JsonSerializer.Serialize(new
{
    customer_type = "billware",
    is_business_client = 0,
    bill_title = "Mister",
    bill_firstname = "Max",
    bill_lastname = "Mustermann",
    bill_street = "Musterstraße 12",
    bill_zipcode = "12345",
    bill_city = "Musterstadt",
    bill_country = "de",
    bill_phone = "+49 123 4567890",
    bill_email = "max.mustermann@example.com",
    divergent_delivery_address = 1,
    delivery_title = "Mister",
    delivery_firstname = "Max",
    delivery_lastname = "Mustermann",
    delivery_street = "Lieferweg 5",
    delivery_zipcode = "54321",
    delivery_city = "Lieferstadt",
    delivery_country = "de",
    delivery_phone = "+49 987 6543210",
    account_iban = "DE89370400440532013000",
    account_bic = "COBADEFFXXX",
    account_bank = "Commerzbank",
    account_paypal = "max.paypal@example.com",
    user_note = "Kunde möchte Rechnung nur per E-Mail erhalten",
    public_authority_id = ""
});

// The HMAC is calculated over the exact request body that is sent
using var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(apiSecret));
var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(payload)));

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Post, "https://www.billware.de/api/v1")
{
    Content = new StringContent(payload, Encoding.UTF8, "application/json")
};

request.Headers.Add("X-Bw-Hmac", $"{apiAppId}:{signature}");
request.Headers.Add("X-Bw-Method", "customer.create");

var response = await client.SendAsync(request);

Console.WriteLine(await response.Content.ReadAsStringAsync());

<?php

// Get your API credentials from your billware customer area
$apiAppId  = 'your-app-id';
$apiSecret = 'your-api-secret';

$payload = json_encode([
    'customer_ident' => '46yq1898qmohrz57',
]);

// The HMAC is calculated over the exact request body that is sent
$hmac = base64_encode(hash_hmac('sha256', $payload, $apiSecret, true));

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL            => 'https://www.billware.de/api/v1',
    CURLOPT_POST           => true,
    CURLOPT_POSTFIELDS     => $payload,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'X-Bw-Hmac: '.$apiAppId.':'.$hmac,
        'X-Bw-Method: customer.read',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($curl);
curl_close($curl);

print_r(json_decode($response, true));

import crypto from 'node:crypto';

// Get your API credentials from your billware customer area
const apiAppId  = 'your-app-id';
const apiSecret = 'your-api-secret';

const payload = JSON.stringify({
    "customer_ident": "46yq1898qmohrz57"
});

// The HMAC is calculated over the exact request body that is sent
const hmac = crypto.createHmac('sha256', apiSecret).update(payload).digest('base64');

const response = await fetch('https://www.billware.de/api/v1', {
    method: 'POST',
    headers: {
        'X-Bw-Hmac': `${apiAppId}:${hmac}`,
        'X-Bw-Method': 'customer.read',
        'Content-Type': 'application/json'
    },
    body: payload
});

console.log(await response.json());

import base64
import hashlib
import hmac
import json

import requests

# Get your API credentials from your billware customer area
api_appid  = "your-app-id"
api_secret = "your-api-secret"

payload = json.dumps({
    "customer_ident": "46yq1898qmohrz57",
})

# The HMAC is calculated over the exact request body that is sent
signature = base64.b64encode(
    hmac.new(api_secret.encode(), payload.encode(), hashlib.sha256).digest()
).decode()

response = requests.post(
    "https://www.billware.de/api/v1",
    data=payload,
    headers={
        "X-Bw-Hmac": f"{api_appid}:{signature}",
        "X-Bw-Method": "customer.read",
        "Content-Type": "application/json",
    },
)

print(response.json())

using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Text.Json;

// Get your API credentials from your billware customer area
const string apiAppId  = "your-app-id";
const string apiSecret = "your-api-secret";

var payload = JsonSerializer.Serialize(new
{
    customer_ident = "46yq1898qmohrz57"
});

// The HMAC is calculated over the exact request body that is sent
using var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(apiSecret));
var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(payload)));

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Post, "https://www.billware.de/api/v1")
{
    Content = new StringContent(payload, Encoding.UTF8, "application/json")
};

request.Headers.Add("X-Bw-Hmac", $"{apiAppId}:{signature}");
request.Headers.Add("X-Bw-Method", "customer.read");

var response = await client.SendAsync(request);

Console.WriteLine(await response.Content.ReadAsStringAsync());

<?php

// Get your API credentials from your billware customer area
$apiAppId  = 'your-app-id';
$apiSecret = 'your-api-secret';

$payload = json_encode([
    'customer_ident' => '46yq1898qmohrz57',
    'bill_firstname' => 'Moritz',
]);

// The HMAC is calculated over the exact request body that is sent
$hmac = base64_encode(hash_hmac('sha256', $payload, $apiSecret, true));

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL            => 'https://www.billware.de/api/v1',
    CURLOPT_POST           => true,
    CURLOPT_POSTFIELDS     => $payload,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'X-Bw-Hmac: '.$apiAppId.':'.$hmac,
        'X-Bw-Method: customer.update',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($curl);
curl_close($curl);

print_r(json_decode($response, true));

import crypto from 'node:crypto';

// Get your API credentials from your billware customer area
const apiAppId  = 'your-app-id';
const apiSecret = 'your-api-secret';

const payload = JSON.stringify({
    "customer_ident": "46yq1898qmohrz57",
    "bill_firstname": "Moritz"
});

// The HMAC is calculated over the exact request body that is sent
const hmac = crypto.createHmac('sha256', apiSecret).update(payload).digest('base64');

const response = await fetch('https://www.billware.de/api/v1', {
    method: 'POST',
    headers: {
        'X-Bw-Hmac': `${apiAppId}:${hmac}`,
        'X-Bw-Method': 'customer.update',
        'Content-Type': 'application/json'
    },
    body: payload
});

console.log(await response.json());

import base64
import hashlib
import hmac
import json

import requests

# Get your API credentials from your billware customer area
api_appid  = "your-app-id"
api_secret = "your-api-secret"

payload = json.dumps({
    "customer_ident": "46yq1898qmohrz57",
    "bill_firstname": "Moritz",
})

# The HMAC is calculated over the exact request body that is sent
signature = base64.b64encode(
    hmac.new(api_secret.encode(), payload.encode(), hashlib.sha256).digest()
).decode()

response = requests.post(
    "https://www.billware.de/api/v1",
    data=payload,
    headers={
        "X-Bw-Hmac": f"{api_appid}:{signature}",
        "X-Bw-Method": "customer.update",
        "Content-Type": "application/json",
    },
)

print(response.json())

using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Text.Json;

// Get your API credentials from your billware customer area
const string apiAppId  = "your-app-id";
const string apiSecret = "your-api-secret";

var payload = JsonSerializer.Serialize(new
{
    customer_ident = "46yq1898qmohrz57",
    bill_firstname = "Moritz"
});

// The HMAC is calculated over the exact request body that is sent
using var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(apiSecret));
var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(payload)));

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Post, "https://www.billware.de/api/v1")
{
    Content = new StringContent(payload, Encoding.UTF8, "application/json")
};

request.Headers.Add("X-Bw-Hmac", $"{apiAppId}:{signature}");
request.Headers.Add("X-Bw-Method", "customer.update");

var response = await client.SendAsync(request);

Console.WriteLine(await response.Content.ReadAsStringAsync());

<?php

// Get your API credentials from your billware customer area
$apiAppId  = 'your-app-id';
$apiSecret = 'your-api-secret';

$payload = json_encode([
    'customer_ident' => '46yq1898qmohrz57',
]);

// The HMAC is calculated over the exact request body that is sent
$hmac = base64_encode(hash_hmac('sha256', $payload, $apiSecret, true));

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL            => 'https://www.billware.de/api/v1',
    CURLOPT_POST           => true,
    CURLOPT_POSTFIELDS     => $payload,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'X-Bw-Hmac: '.$apiAppId.':'.$hmac,
        'X-Bw-Method: customer.delete',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($curl);
curl_close($curl);

print_r(json_decode($response, true));

import crypto from 'node:crypto';

// Get your API credentials from your billware customer area
const apiAppId  = 'your-app-id';
const apiSecret = 'your-api-secret';

const payload = JSON.stringify({
    "customer_ident": "46yq1898qmohrz57"
});

// The HMAC is calculated over the exact request body that is sent
const hmac = crypto.createHmac('sha256', apiSecret).update(payload).digest('base64');

const response = await fetch('https://www.billware.de/api/v1', {
    method: 'POST',
    headers: {
        'X-Bw-Hmac': `${apiAppId}:${hmac}`,
        'X-Bw-Method': 'customer.delete',
        'Content-Type': 'application/json'
    },
    body: payload
});

console.log(await response.json());

import base64
import hashlib
import hmac
import json

import requests

# Get your API credentials from your billware customer area
api_appid  = "your-app-id"
api_secret = "your-api-secret"

payload = json.dumps({
    "customer_ident": "46yq1898qmohrz57",
})

# The HMAC is calculated over the exact request body that is sent
signature = base64.b64encode(
    hmac.new(api_secret.encode(), payload.encode(), hashlib.sha256).digest()
).decode()

response = requests.post(
    "https://www.billware.de/api/v1",
    data=payload,
    headers={
        "X-Bw-Hmac": f"{api_appid}:{signature}",
        "X-Bw-Method": "customer.delete",
        "Content-Type": "application/json",
    },
)

print(response.json())

using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Text.Json;

// Get your API credentials from your billware customer area
const string apiAppId  = "your-app-id";
const string apiSecret = "your-api-secret";

var payload = JsonSerializer.Serialize(new
{
    customer_ident = "46yq1898qmohrz57"
});

// The HMAC is calculated over the exact request body that is sent
using var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(apiSecret));
var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(payload)));

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Post, "https://www.billware.de/api/v1")
{
    Content = new StringContent(payload, Encoding.UTF8, "application/json")
};

request.Headers.Add("X-Bw-Hmac", $"{apiAppId}:{signature}");
request.Headers.Add("X-Bw-Method", "customer.delete");

var response = await client.SendAsync(request);

Console.WriteLine(await response.Content.ReadAsStringAsync());

<?php

// Get your API credentials from your billware customer area
$apiAppId  = 'your-app-id';
$apiSecret = 'your-api-secret';

$payload = json_encode([
    'customer_ident' => '46yq1898qmohrz57',
]);

// The HMAC is calculated over the exact request body that is sent
$hmac = base64_encode(hash_hmac('sha256', $payload, $apiSecret, true));

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL            => 'https://www.billware.de/api/v1',
    CURLOPT_POST           => true,
    CURLOPT_POSTFIELDS     => $payload,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'X-Bw-Hmac: '.$apiAppId.':'.$hmac,
        'X-Bw-Method: customer.exists',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($curl);
curl_close($curl);

print_r(json_decode($response, true));

import crypto from 'node:crypto';

// Get your API credentials from your billware customer area
const apiAppId  = 'your-app-id';
const apiSecret = 'your-api-secret';

const payload = JSON.stringify({
    "customer_ident": "46yq1898qmohrz57"
});

// The HMAC is calculated over the exact request body that is sent
const hmac = crypto.createHmac('sha256', apiSecret).update(payload).digest('base64');

const response = await fetch('https://www.billware.de/api/v1', {
    method: 'POST',
    headers: {
        'X-Bw-Hmac': `${apiAppId}:${hmac}`,
        'X-Bw-Method': 'customer.exists',
        'Content-Type': 'application/json'
    },
    body: payload
});

console.log(await response.json());

import base64
import hashlib
import hmac
import json

import requests

# Get your API credentials from your billware customer area
api_appid  = "your-app-id"
api_secret = "your-api-secret"

payload = json.dumps({
    "customer_ident": "46yq1898qmohrz57",
})

# The HMAC is calculated over the exact request body that is sent
signature = base64.b64encode(
    hmac.new(api_secret.encode(), payload.encode(), hashlib.sha256).digest()
).decode()

response = requests.post(
    "https://www.billware.de/api/v1",
    data=payload,
    headers={
        "X-Bw-Hmac": f"{api_appid}:{signature}",
        "X-Bw-Method": "customer.exists",
        "Content-Type": "application/json",
    },
)

print(response.json())

using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Text.Json;

// Get your API credentials from your billware customer area
const string apiAppId  = "your-app-id";
const string apiSecret = "your-api-secret";

var payload = JsonSerializer.Serialize(new
{
    customer_ident = "46yq1898qmohrz57"
});

// The HMAC is calculated over the exact request body that is sent
using var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(apiSecret));
var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(payload)));

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Post, "https://www.billware.de/api/v1")
{
    Content = new StringContent(payload, Encoding.UTF8, "application/json")
};

request.Headers.Add("X-Bw-Hmac", $"{apiAppId}:{signature}");
request.Headers.Add("X-Bw-Method", "customer.exists");

var response = await client.SendAsync(request);

Console.WriteLine(await response.Content.ReadAsStringAsync());

<?php

// Get your API credentials from your billware customer area
$apiAppId  = 'your-app-id';
$apiSecret = 'your-api-secret';

$payload = json_encode([
    'customer_ident' => '46yq1898qmohrz57',
    'delivery_title' => 0,
    'delivery_firstname' => 'Max',
    'delivery_lastname' => 'Mustermann',
    'delivery_company' => 'Muster GmbH',
    'delivery_street' => 'Lieferweg 5',
    'delivery_street2' => 'Etage 3',
    'delivery_zipcode' => '54321',
    'delivery_city' => 'Lieferstadt',
    'delivery_country' => 'de',
    'delivery_phone' => '+49 987 6543210',
    'delivery_phone_mobile' => '+49 171 1234567',
]);

// The HMAC is calculated over the exact request body that is sent
$hmac = base64_encode(hash_hmac('sha256', $payload, $apiSecret, true));

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL            => 'https://www.billware.de/api/v1',
    CURLOPT_POST           => true,
    CURLOPT_POSTFIELDS     => $payload,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'X-Bw-Hmac: '.$apiAppId.':'.$hmac,
        'X-Bw-Method: address.create',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($curl);
curl_close($curl);

print_r(json_decode($response, true));

import crypto from 'node:crypto';

// Get your API credentials from your billware customer area
const apiAppId  = 'your-app-id';
const apiSecret = 'your-api-secret';

const payload = JSON.stringify({
    "customer_ident": "46yq1898qmohrz57",
    "delivery_title": 0,
    "delivery_firstname": "Max",
    "delivery_lastname": "Mustermann",
    "delivery_company": "Muster GmbH",
    "delivery_street": "Lieferweg 5",
    "delivery_street2": "Etage 3",
    "delivery_zipcode": "54321",
    "delivery_city": "Lieferstadt",
    "delivery_country": "de",
    "delivery_phone": "+49 987 6543210",
    "delivery_phone_mobile": "+49 171 1234567"
});

// The HMAC is calculated over the exact request body that is sent
const hmac = crypto.createHmac('sha256', apiSecret).update(payload).digest('base64');

const response = await fetch('https://www.billware.de/api/v1', {
    method: 'POST',
    headers: {
        'X-Bw-Hmac': `${apiAppId}:${hmac}`,
        'X-Bw-Method': 'address.create',
        'Content-Type': 'application/json'
    },
    body: payload
});

console.log(await response.json());

import base64
import hashlib
import hmac
import json

import requests

# Get your API credentials from your billware customer area
api_appid  = "your-app-id"
api_secret = "your-api-secret"

payload = json.dumps({
    "customer_ident": "46yq1898qmohrz57",
    "delivery_title": 0,
    "delivery_firstname": "Max",
    "delivery_lastname": "Mustermann",
    "delivery_company": "Muster GmbH",
    "delivery_street": "Lieferweg 5",
    "delivery_street2": "Etage 3",
    "delivery_zipcode": "54321",
    "delivery_city": "Lieferstadt",
    "delivery_country": "de",
    "delivery_phone": "+49 987 6543210",
    "delivery_phone_mobile": "+49 171 1234567",
})

# The HMAC is calculated over the exact request body that is sent
signature = base64.b64encode(
    hmac.new(api_secret.encode(), payload.encode(), hashlib.sha256).digest()
).decode()

response = requests.post(
    "https://www.billware.de/api/v1",
    data=payload,
    headers={
        "X-Bw-Hmac": f"{api_appid}:{signature}",
        "X-Bw-Method": "address.create",
        "Content-Type": "application/json",
    },
)

print(response.json())

using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Text.Json;

// Get your API credentials from your billware customer area
const string apiAppId  = "your-app-id";
const string apiSecret = "your-api-secret";

var payload = JsonSerializer.Serialize(new
{
    customer_ident = "46yq1898qmohrz57",
    delivery_title = 0,
    delivery_firstname = "Max",
    delivery_lastname = "Mustermann",
    delivery_company = "Muster GmbH",
    delivery_street = "Lieferweg 5",
    delivery_street2 = "Etage 3",
    delivery_zipcode = "54321",
    delivery_city = "Lieferstadt",
    delivery_country = "de",
    delivery_phone = "+49 987 6543210",
    delivery_phone_mobile = "+49 171 1234567"
});

// The HMAC is calculated over the exact request body that is sent
using var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(apiSecret));
var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(payload)));

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Post, "https://www.billware.de/api/v1")
{
    Content = new StringContent(payload, Encoding.UTF8, "application/json")
};

request.Headers.Add("X-Bw-Hmac", $"{apiAppId}:{signature}");
request.Headers.Add("X-Bw-Method", "address.create");

var response = await client.SendAsync(request);

Console.WriteLine(await response.Content.ReadAsStringAsync());

<?php

// Get your API credentials from your billware customer area
$apiAppId  = 'your-app-id';
$apiSecret = 'your-api-secret';

$payload = json_encode([
    'address_ident' => '61636lu6Et7324W8',
]);

// The HMAC is calculated over the exact request body that is sent
$hmac = base64_encode(hash_hmac('sha256', $payload, $apiSecret, true));

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL            => 'https://www.billware.de/api/v1',
    CURLOPT_POST           => true,
    CURLOPT_POSTFIELDS     => $payload,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'X-Bw-Hmac: '.$apiAppId.':'.$hmac,
        'X-Bw-Method: address.exists',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($curl);
curl_close($curl);

print_r(json_decode($response, true));

import crypto from 'node:crypto';

// Get your API credentials from your billware customer area
const apiAppId  = 'your-app-id';
const apiSecret = 'your-api-secret';

const payload = JSON.stringify({
    "address_ident": "61636lu6Et7324W8"
});

// The HMAC is calculated over the exact request body that is sent
const hmac = crypto.createHmac('sha256', apiSecret).update(payload).digest('base64');

const response = await fetch('https://www.billware.de/api/v1', {
    method: 'POST',
    headers: {
        'X-Bw-Hmac': `${apiAppId}:${hmac}`,
        'X-Bw-Method': 'address.exists',
        'Content-Type': 'application/json'
    },
    body: payload
});

console.log(await response.json());

import base64
import hashlib
import hmac
import json

import requests

# Get your API credentials from your billware customer area
api_appid  = "your-app-id"
api_secret = "your-api-secret"

payload = json.dumps({
    "address_ident": "61636lu6Et7324W8",
})

# The HMAC is calculated over the exact request body that is sent
signature = base64.b64encode(
    hmac.new(api_secret.encode(), payload.encode(), hashlib.sha256).digest()
).decode()

response = requests.post(
    "https://www.billware.de/api/v1",
    data=payload,
    headers={
        "X-Bw-Hmac": f"{api_appid}:{signature}",
        "X-Bw-Method": "address.exists",
        "Content-Type": "application/json",
    },
)

print(response.json())

using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Text.Json;

// Get your API credentials from your billware customer area
const string apiAppId  = "your-app-id";
const string apiSecret = "your-api-secret";

var payload = JsonSerializer.Serialize(new
{
    address_ident = "61636lu6Et7324W8"
});

// The HMAC is calculated over the exact request body that is sent
using var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(apiSecret));
var signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(payload)));

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Post, "https://www.billware.de/api/v1")
{
    Content = new StringContent(payload, Encoding.UTF8, "application/json")
};

request.Headers.Add("X-Bw-Hmac", $"{apiAppId}:{signature}");
request.Headers.Add("X-Bw-Method", "address.exists");

var response = await client.SendAsync(request);

Console.WriteLine(await response.Content.ReadAsStringAsync());