curl --request GET \
  --url https://mercy-pay.com/api/v1/checkout_sessions/{id} \
  --header 'Authorization: Bearer <token>'

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://mercy-pay.com/api/v1/checkout_sessions/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

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

import requests

url = "https://mercy-pay.com/api/v1/checkout_sessions/{id}"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)

{
  "data": {
    "id": "cs_01J9Z3V8QK4M2XW7R6TB5N0HYD",
    "object": "checkout_session",
    "livemode": false,
    "created": "2026-10-03T10:20:00+00:00",
    "amount": 15000,
    "currency": "XAF",
    "description": "Commande 4821",
    "payer_name": null,
    "payer_email": null,
    "payer_phone": null,
    "payer_address": null,
    "success_url": "https://boutique-ada.example/merci",
    "cancel_url": "https://boutique-ada.example/panier",
    "status": "completed",
    "metadata": {
      "order_id": "4821"
    },
    "checkout_url": "https://mercy-pay.com/paiement/01J9Z3V8QK4M2XW7R6TB5N0HYD",
    "expires_at": "2026-10-03T10:50:00+00:00",
    "payment": {
      "id": "pay_5e0c8a7b3d1f4a2e9c648b7f0d2e1a93",
      "object": "payment",
      "livemode": false,
      "created": "2026-10-04T10:20:00+00:00",
      "checkout_session": "cs_01J9Z3V8QK4M2XW7R6TB5N0HYD",
      "amount": 15000,
      "fee_amount": 750,
      "net_amount": 14250,
      "currency": "XAF",
      "payment_method": "mobile_money",
      "mobile_money_country": "CMR",
      "mobile_money_provider": "MTN_MOMO_CMR",
      "status": "succeeded",
      "failure_code": null,
      "failure_reason": null,
      "metadata": null,
      "next_action": null
    }
  }
}

{
  "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": "invalid_request_error",
    "code": "resource_not_found",
    "message": "Ressource introuvable.",
    "param": null,
    "doc_url": "https://docs.mercy-pay.com/developers/errors#resource_not_found",
    "request_id": "req_01jc8x4m2v7t9qk3n5w6y8z0ab"
  }
}

{
  "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"
  }
}