curl --request POST \
  --url https://mercy-pay.com/api/v1/billing_portal/sessions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "customer_email": "awa@example.com",
  "return_url": "https://boutique.example.com/mon-compte"
}
'

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://mercy-pay.com/api/v1/billing_portal/sessions",
  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([
    'customer_email' => 'awa@example.com',
    'return_url' => 'https://boutique.example.com/mon-compte'
  ]),
  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;
}

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    customer_email: 'awa@example.com',
    return_url: 'https://boutique.example.com/mon-compte'
  })
};

fetch('https://mercy-pay.com/api/v1/billing_portal/sessions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://mercy-pay.com/api/v1/billing_portal/sessions"

payload = {
    "customer_email": "awa@example.com",
    "return_url": "https://boutique.example.com/mon-compte"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "url": "https://mercy-pay.com/facturation/Xk9pL2mQ7vR4sT8wY1zA3bC6dE0fG5hJ2kL7mN4pQ9rS1tU",
  "expires_at": "2026-11-07T11:00:00+00:00"
}

{
  "error": {
    "type": "authentication_error",
    "code": "api_key_invalid",
    "message": "Clé API invalide.",
    "param": null,
    "doc_url": "https://docs.mercy-pay.com/developers/errors#api_key_invalid",
    "request_id": "req_01jc8x4m2v7t9qk3n5w6y8z0ab"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "forbidden",
    "message": "L'espace client est désactivé pour ce compte.",
    "param": null,
    "doc_url": "https://docs.mercy-pay.com/developers/errors#forbidden",
    "request_id": "req_01jc8x4m2v7t9qk3n5w6y8z0ab"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "resource_not_found",
    "message": "Aucun abonnement pour ce client.",
    "param": null,
    "doc_url": "https://docs.mercy-pay.com/developers/errors#resource_not_found",
    "request_id": "req_01jc8x4m2v7t9qk3n5w6y8z0ab"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "validation_failed",
    "message": "Le champ amount est obligatoire.",
    "param": "amount",
    "doc_url": "https://docs.mercy-pay.com/developers/errors#validation_failed",
    "request_id": "req_01jc8x4m2v7t9qk3n5w6y8z0ab",
    "errors": {
      "amount": [
        "Le champ amount est obligatoire."
      ]
    }
  }
}

{
  "error": {
    "type": "rate_limit_error",
    "code": "rate_limited",
    "message": "Trop de requêtes.",
    "param": null,
    "doc_url": "https://docs.mercy-pay.com/developers/errors#rate_limited",
    "request_id": "req_01jc8x4m2v7t9qk3n5w6y8z0ab"
  }
}