curl --request POST \
  --url https://api.getlago.com/api/v1/billing_entities \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "billing_entity": {
    "code": "acme_corp",
    "name": "Acme Corp",
    "default_currency": "USD",
    "document_number_prefix": "ABC-123",
    "finalize_zero_amount_invoice": true,
    "billing_configuration": {
      "invoice_footer": "Thank you for your business",
      "document_locale": "en",
      "invoice_grace_period": 0,
      "subscription_invoice_issuing_date_anchor": "next_period_start",
      "subscription_invoice_issuing_date_adjustment": "align_with_finalization_date"
    },
    "net_payment_term": 0,
    "address_line1": "5230 Penfield Ave",
    "address_line2": "Suite 100",
    "phone": "1-171-883-3711 x245",
    "city": "Woodland Hills",
    "state": "CA",
    "country": "US",
    "zipcode": "91364",
    "email": "billing@acme.com",
    "legal_name": "Acme Corporation",
    "legal_number": "US123456789",
    "tax_identification_number": "EU123456789",
    "timezone": "UTC",
    "email_settings": [],
    "eu_tax_management": false,
    "einvoicing": false,
    "logo": "data:image/png;base64,..."
  }
}
'

import requests

url = "https://api.getlago.com/api/v1/billing_entities"

payload = { "billing_entity": {
        "code": "acme_corp",
        "name": "Acme Corp",
        "default_currency": "USD",
        "document_number_prefix": "ABC-123",
        "finalize_zero_amount_invoice": True,
        "billing_configuration": {
            "invoice_footer": "Thank you for your business",
            "document_locale": "en",
            "invoice_grace_period": 0,
            "subscription_invoice_issuing_date_anchor": "next_period_start",
            "subscription_invoice_issuing_date_adjustment": "align_with_finalization_date"
        },
        "net_payment_term": 0,
        "address_line1": "5230 Penfield Ave",
        "address_line2": "Suite 100",
        "phone": "1-171-883-3711 x245",
        "city": "Woodland Hills",
        "state": "CA",
        "country": "US",
        "zipcode": "91364",
        "email": "billing@acme.com",
        "legal_name": "Acme Corporation",
        "legal_number": "US123456789",
        "tax_identification_number": "EU123456789",
        "timezone": "UTC",
        "email_settings": [],
        "eu_tax_management": False,
        "einvoicing": False,
        "logo": "data:image/png;base64,..."
    } }
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({
    billing_entity: {
      code: 'acme_corp',
      name: 'Acme Corp',
      default_currency: 'USD',
      document_number_prefix: 'ABC-123',
      finalize_zero_amount_invoice: true,
      billing_configuration: {
        invoice_footer: 'Thank you for your business',
        document_locale: 'en',
        invoice_grace_period: 0,
        subscription_invoice_issuing_date_anchor: 'next_period_start',
        subscription_invoice_issuing_date_adjustment: 'align_with_finalization_date'
      },
      net_payment_term: 0,
      address_line1: '5230 Penfield Ave',
      address_line2: 'Suite 100',
      phone: '1-171-883-3711 x245',
      city: 'Woodland Hills',
      state: 'CA',
      country: 'US',
      zipcode: '91364',
      email: 'billing@acme.com',
      legal_name: 'Acme Corporation',
      legal_number: 'US123456789',
      tax_identification_number: 'EU123456789',
      timezone: 'UTC',
      email_settings: [],
      eu_tax_management: false,
      einvoicing: false,
      logo: 'data:image/png;base64,...'
    }
  })
};

fetch('https://api.getlago.com/api/v1/billing_entities', 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.getlago.com/api/v1/billing_entities",
  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([
    'billing_entity' => [
        'code' => 'acme_corp',
        'name' => 'Acme Corp',
        'default_currency' => 'USD',
        'document_number_prefix' => 'ABC-123',
        'finalize_zero_amount_invoice' => true,
        'billing_configuration' => [
                'invoice_footer' => 'Thank you for your business',
                'document_locale' => 'en',
                'invoice_grace_period' => 0,
                'subscription_invoice_issuing_date_anchor' => 'next_period_start',
                'subscription_invoice_issuing_date_adjustment' => 'align_with_finalization_date'
        ],
        'net_payment_term' => 0,
        'address_line1' => '5230 Penfield Ave',
        'address_line2' => 'Suite 100',
        'phone' => '1-171-883-3711 x245',
        'city' => 'Woodland Hills',
        'state' => 'CA',
        'country' => 'US',
        'zipcode' => '91364',
        'email' => 'billing@acme.com',
        'legal_name' => 'Acme Corporation',
        'legal_number' => 'US123456789',
        'tax_identification_number' => 'EU123456789',
        'timezone' => 'UTC',
        'email_settings' => [
                
        ],
        'eu_tax_management' => false,
        'einvoicing' => false,
        'logo' => 'data:image/png;base64,...'
    ]
  ]),
  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.getlago.com/api/v1/billing_entities"

	payload := strings.NewReader("{\n  \"billing_entity\": {\n    \"code\": \"acme_corp\",\n    \"name\": \"Acme Corp\",\n    \"default_currency\": \"USD\",\n    \"document_number_prefix\": \"ABC-123\",\n    \"finalize_zero_amount_invoice\": true,\n    \"billing_configuration\": {\n      \"invoice_footer\": \"Thank you for your business\",\n      \"document_locale\": \"en\",\n      \"invoice_grace_period\": 0,\n      \"subscription_invoice_issuing_date_anchor\": \"next_period_start\",\n      \"subscription_invoice_issuing_date_adjustment\": \"align_with_finalization_date\"\n    },\n    \"net_payment_term\": 0,\n    \"address_line1\": \"5230 Penfield Ave\",\n    \"address_line2\": \"Suite 100\",\n    \"phone\": \"1-171-883-3711 x245\",\n    \"city\": \"Woodland Hills\",\n    \"state\": \"CA\",\n    \"country\": \"US\",\n    \"zipcode\": \"91364\",\n    \"email\": \"billing@acme.com\",\n    \"legal_name\": \"Acme Corporation\",\n    \"legal_number\": \"US123456789\",\n    \"tax_identification_number\": \"EU123456789\",\n    \"timezone\": \"UTC\",\n    \"email_settings\": [],\n    \"eu_tax_management\": false,\n    \"einvoicing\": false,\n    \"logo\": \"data:image/png;base64,...\"\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))

}

HttpResponse<String> response = Unirest.post("https://api.getlago.com/api/v1/billing_entities")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"billing_entity\": {\n    \"code\": \"acme_corp\",\n    \"name\": \"Acme Corp\",\n    \"default_currency\": \"USD\",\n    \"document_number_prefix\": \"ABC-123\",\n    \"finalize_zero_amount_invoice\": true,\n    \"billing_configuration\": {\n      \"invoice_footer\": \"Thank you for your business\",\n      \"document_locale\": \"en\",\n      \"invoice_grace_period\": 0,\n      \"subscription_invoice_issuing_date_anchor\": \"next_period_start\",\n      \"subscription_invoice_issuing_date_adjustment\": \"align_with_finalization_date\"\n    },\n    \"net_payment_term\": 0,\n    \"address_line1\": \"5230 Penfield Ave\",\n    \"address_line2\": \"Suite 100\",\n    \"phone\": \"1-171-883-3711 x245\",\n    \"city\": \"Woodland Hills\",\n    \"state\": \"CA\",\n    \"country\": \"US\",\n    \"zipcode\": \"91364\",\n    \"email\": \"billing@acme.com\",\n    \"legal_name\": \"Acme Corporation\",\n    \"legal_number\": \"US123456789\",\n    \"tax_identification_number\": \"EU123456789\",\n    \"timezone\": \"UTC\",\n    \"email_settings\": [],\n    \"eu_tax_management\": false,\n    \"einvoicing\": false,\n    \"logo\": \"data:image/png;base64,...\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.getlago.com/api/v1/billing_entities")

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  \"billing_entity\": {\n    \"code\": \"acme_corp\",\n    \"name\": \"Acme Corp\",\n    \"default_currency\": \"USD\",\n    \"document_number_prefix\": \"ABC-123\",\n    \"finalize_zero_amount_invoice\": true,\n    \"billing_configuration\": {\n      \"invoice_footer\": \"Thank you for your business\",\n      \"document_locale\": \"en\",\n      \"invoice_grace_period\": 0,\n      \"subscription_invoice_issuing_date_anchor\": \"next_period_start\",\n      \"subscription_invoice_issuing_date_adjustment\": \"align_with_finalization_date\"\n    },\n    \"net_payment_term\": 0,\n    \"address_line1\": \"5230 Penfield Ave\",\n    \"address_line2\": \"Suite 100\",\n    \"phone\": \"1-171-883-3711 x245\",\n    \"city\": \"Woodland Hills\",\n    \"state\": \"CA\",\n    \"country\": \"US\",\n    \"zipcode\": \"91364\",\n    \"email\": \"billing@acme.com\",\n    \"legal_name\": \"Acme Corporation\",\n    \"legal_number\": \"US123456789\",\n    \"tax_identification_number\": \"EU123456789\",\n    \"timezone\": \"UTC\",\n    \"email_settings\": [],\n    \"eu_tax_management\": false,\n    \"einvoicing\": false,\n    \"logo\": \"data:image/png;base64,...\"\n  }\n}"

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

{
  "billing_entity": {
    "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
    "code": "acme_corp",
    "name": "Acme Corp",
    "default_currency": "USD",
    "document_locale": "en",
    "document_numbering": "per_customer",
    "finalize_zero_amount_invoice": true,
    "invoice_grace_period": 0,
    "net_payment_term": 0,
    "timezone": "UTC",
    "created_at": "2022-04-29T08:59:51Z",
    "updated_at": "2022-04-29T08:59:51Z",
    "document_number_prefix": "ABC-123",
    "invoice_footer": "Thank you for your business",
    "subscription_invoice_issuing_date_anchor": "next_period_start",
    "subscription_invoice_issuing_date_adjustment": "align_with_finalization_date",
    "is_default": false,
    "address_line1": "5230 Penfield Ave",
    "address_line2": "Suite 100",
    "phone": "1-171-883-3711 x245",
    "city": "Woodland Hills",
    "state": "CA",
    "country": "US",
    "zipcode": "91364",
    "email": "billing@acme.com",
    "legal_name": "Acme Corporation",
    "legal_number": "US123456789",
    "tax_identification_number": "EU123456789",
    "email_settings": [
      "invoice.finalized"
    ],
    "eu_tax_management": false,
    "einvoicing": false,
    "logo_url": "https://getlago.com/logo.png"
  }
}

{
  "status": 400,
  "error": "Bad request"
}

{
  "status": 401,
  "error": "Unauthorized"
}

{
  "status": 403,
  "error": "Forbidden",
  "code": "feature_unavailable"
}

{
  "status": 422,
  "error": "Unprocessable entity",
  "code": "validation_errors",
  "error_details": {}
}