curl --request POST \
  --url https://api.withallo.com/v2/api/partner/accounts/{account_id}/esims \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "phone_number": "+33745805999",
  "tier": "ESIM_20GB",
  "identity": {
    "corporate_name": "Plomberie Martin",
    "postal_address": "12 rue de la Paix",
    "postal_code": "75001",
    "city": "Paris",
    "first_name": "Jean",
    "last_name": "Martin",
    "email": "[email protected]"
  }
}
'

import requests

url = "https://api.withallo.com/v2/api/partner/accounts/{account_id}/esims"

payload = {
    "phone_number": "+33745805999",
    "tier": "ESIM_20GB",
    "identity": {
        "corporate_name": "Plomberie Martin",
        "postal_address": "12 rue de la Paix",
        "postal_code": "75001",
        "city": "Paris",
        "first_name": "Jean",
        "last_name": "Martin",
        "email": "[email protected]"
    }
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    phone_number: '+33745805999',
    tier: 'ESIM_20GB',
    identity: {
      corporate_name: 'Plomberie Martin',
      postal_address: '12 rue de la Paix',
      postal_code: '75001',
      city: 'Paris',
      first_name: 'Jean',
      last_name: 'Martin',
      email: '[email protected]'
    }
  })
};

fetch('https://api.withallo.com/v2/api/partner/accounts/{account_id}/esims', 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.withallo.com/v2/api/partner/accounts/{account_id}/esims",
  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([
    'phone_number' => '+33745805999',
    'tier' => 'ESIM_20GB',
    'identity' => [
        'corporate_name' => 'Plomberie Martin',
        'postal_address' => '12 rue de la Paix',
        'postal_code' => '75001',
        'city' => 'Paris',
        'first_name' => 'Jean',
        'last_name' => 'Martin',
        'email' => '[email protected]'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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.withallo.com/v2/api/partner/accounts/{account_id}/esims"

	payload := strings.NewReader("{\n  \"phone_number\": \"+33745805999\",\n  \"tier\": \"ESIM_20GB\",\n  \"identity\": {\n    \"corporate_name\": \"Plomberie Martin\",\n    \"postal_address\": \"12 rue de la Paix\",\n    \"postal_code\": \"75001\",\n    \"city\": \"Paris\",\n    \"first_name\": \"Jean\",\n    \"last_name\": \"Martin\",\n    \"email\": \"[email protected]\"\n  }\n}")

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

	req.Header.Add("Authorization", "<api-key>")
	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.withallo.com/v2/api/partner/accounts/{account_id}/esims")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"phone_number\": \"+33745805999\",\n  \"tier\": \"ESIM_20GB\",\n  \"identity\": {\n    \"corporate_name\": \"Plomberie Martin\",\n    \"postal_address\": \"12 rue de la Paix\",\n    \"postal_code\": \"75001\",\n    \"city\": \"Paris\",\n    \"first_name\": \"Jean\",\n    \"last_name\": \"Martin\",\n    \"email\": \"[email protected]\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.withallo.com/v2/api/partner/accounts/{account_id}/esims")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"phone_number\": \"+33745805999\",\n  \"tier\": \"ESIM_20GB\",\n  \"identity\": {\n    \"corporate_name\": \"Plomberie Martin\",\n    \"postal_address\": \"12 rue de la Paix\",\n    \"postal_code\": \"75001\",\n    \"city\": \"Paris\",\n    \"first_name\": \"Jean\",\n    \"last_name\": \"Martin\",\n    \"email\": \"[email protected]\"\n  }\n}"

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

{
  "data": {
    "id": "eso-2F6A1C9D4B7E8A0F3D5C6B9A1E2F4D7C8B0A3E61",
    "account_id": "usr-575966AF3661061265263C58882BC409D2A427B8",
    "partner_client_ref": "crm-12345",
    "phone_number": "+33745805999",
    "tier": "ESIM_20GB",
    "status": "PROVISIONING",
    "failure_code": null,
    "created_at": "2026-10-14T10:05:00"
  }
}

{
  "error": {}
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "retryable": true,
    "request_id": "<string>",
    "retry_after_seconds": 123
  }
}

{
  "error": {}
}

{
  "error": {}
}

{
  "error": {}
}

{
  "error": {}
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "retryable": true,
    "request_id": "<string>",
    "retry_after_seconds": 123
  }
}

{
  "error": {}
}