curl --request POST \
  --url "https://api.yukoapp.com/api/v1/public/points/estimate" \
  --header "Authorization: Bearer py_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" \
  --header "Content-Type: application/json" \
  --data '{
    "customer": {
      "id": "cus_847362",
      "email": "rahul.sharma@example.com"
    },
    "items": [
      {
        "product_id": "prod_1001",
        "variant_id": "var_1001_red_m"
      },
      {
        "product_id": "prod_2044",
        "variant_id": "var_2044_black_42"
      }
    ]
  }'

const response = await fetch(
  "https://api.yukoapp.com/api/v1/public/points/estimate",
  {
    method: "POST",
    headers: {
      Authorization: "Bearer py_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      customer: {
        id: "cus_847362",
        email: "rahul.sharma@example.com",
      },
      items: [
        {
          product_id: "prod_1001",
          variant_id: "var_1001_red_m",
        },
        {
          product_id: "prod_2044",
          variant_id: "var_2044_black_42",
        },
      ],
    }),
  }
);

const data = await response.json();

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.yukoapp.com/api/v1/public/points/estimate");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    "customer" => [
        "id"    => "cus_847362",
        "email" => "rahul.sharma@example.com",
    ],
    "items" => [
        [
            "product_id" => "prod_1001",
            "variant_id" => "var_1001_red_m",
        ],
        [
            "product_id" => "prod_2044",
            "variant_id" => "var_2044_black_42",
        ],
    ],
]));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "Authorization: Bearer py_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
    "Content-Type: application/json",
]);

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

$data = json_decode($response, true);

{
  "data": {
    "points_earned": 120,
    "message": "You will earn 120 points after completing this purchase"
  }
}

{
  "data": {
    "points_earned": 0,
    "message": "You will earn 0 points after completing this purchase"
  }
}

{
  "error": {
    "code": "validation_error",
    "message": "The given data was invalid",
    "details": {
      "items": ["The items field is required."]
    }
  }
}

{
  "error": {
    "code": "invalid_token",
    "message": "Invalid or revoked API token"
  }
}