curl --request POST \
  --url https://api.loyaltylion.com/headless/2025-06/{site_id}/customers/{merchant_id}/enroll \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://api.loyaltylion.com/headless/2025-06/{site_id}/customers/{merchant_id}/enroll"

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

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

print(response.text)

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

fetch('https://api.loyaltylion.com/headless/2025-06/{site_id}/customers/{merchant_id}/enroll', 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.loyaltylion.com/headless/2025-06/{site_id}/customers/{merchant_id}/enroll",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  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;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.loyaltylion.com/headless/2025-06/{site_id}/customers/{merchant_id}/enroll"

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

	req.Header.Add("Authorization", "Bearer <token>")

	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.loyaltylion.com/headless/2025-06/{site_id}/customers/{merchant_id}/enroll")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.loyaltylion.com/headless/2025-06/{site_id}/customers/{merchant_id}/enroll")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'

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

{
  "enrolled": true,
  "customer": {
    "state": "enrolled",
    "id": 123,
    "merchant_id": "<string>",
    "email": "<string>",
    "first_name": "<string>",
    "last_name": "<string>",
    "points_approved": 123,
    "points_pending": 123,
    "points_spent": 123,
    "enrolled_at": "<string>",
    "tier_membership": {
      "tier_id": 123,
      "started_at": "2025-01-01T12:00:00Z",
      "expires_at": "2026-01-01T12:00:00Z",
      "progress": {
        "kind": "points",
        "valid_until": "<string>",
        "points_needed_for_renewal": 123,
        "upgrade_tier_id": 123,
        "points_needed_for_upgrade": 123,
        "tier_points": {
          "now": 123,
          "at_expiration": 123
        },
        "forecasted_tier_id": 123
      }
    },
    "birthday": {
      "month": 6,
      "day": 25
    },
    "next_birthday": "2025-06-25",
    "claimed_rewards": [
      {
        "id": 123,
        "claimed_at": "<string>",
        "reward_id": 123,
        "title": "$5 voucher",
        "state": "approved",
        "source": {
          "kind": "points_redemption",
          "points_cost": 123
        },
        "auto_refund_at": "<string>",
        "redeemable": {
          "usage_status": "not_used",
          "kind": "gift_card",
          "code_last_characters": "<string>",
          "initial_balance": {
            "amount": 123,
            "formatted": "<string>"
          },
          "current_balance": {
            "amount": 123,
            "formatted": "<string>"
          },
          "expires_at": "<string>"
        }
      }
    ],
    "available_rewards": [
      {
        "id": 123,
        "limit": {
          "count": 123,
          "interval": "day"
        },
        "kind": "gift_card",
        "properties": {
          "initial_balance": {
            "amount": 123,
            "formatted": "<string>"
          }
        },
        "variant": {
          "tier_id": 123,
          "title": "$5 voucher",
          "description": "Spend your points on $5 off your next order",
          "enabled": true,
          "cost": {
            "kind": "fixed",
            "points": 123
          },
          "cost_text": "100 points"
        },
        "context": {
          "can_redeem": {
            "state": "redeemable"
          },
          "last_claimed_at": "<string>",
          "claim_count": 123,
          "claim_limit": {
            "state": "no_limit"
          }
        },
        "image_url": "<string>"
      }
    ],
    "available_rules": [
      {
        "id": 123,
        "limit": {
          "count": 123,
          "interval": "day"
        },
        "kind": "birthday",
        "variant": {
          "tier_id": 123,
          "title": "Make a purchase",
          "description": "Earn points every time you shop with us",
          "enabled": true,
          "result": {
            "kind": "points",
            "per_currency_unit": 1,
            "points": 5
          },
          "result_short_text": "5 points per $1"
        },
        "context": {
          "last_completed_at": "<string>",
          "completion_count": 123,
          "completion_limit": {
            "state": "no_limit"
          }
        },
        "image_url": "<string>"
      }
    ],
    "history": [
      {
        "kind": "earned_points_from_rule",
        "label": "Join our program",
        "date": "<string>",
        "points": 1,
        "points_text": "500 points",
        "rule": {
          "id": 123,
          "kind": "birthday"
        },
        "points_will_approve_at": "<string>",
        "points_will_expire_at": "<string>",
        "state": "pending"
      }
    ],
    "active_cart_redemptions": [
      {
        "id": "<string>",
        "claimed_reward_id": 123,
        "expires_at": "<string>",
        "product": {
          "id": "<string>",
          "handle": "<string>",
          "title": "<string>",
          "url": "<string>",
          "image_url": "<string>",
          "variant": {
            "id": "<string>",
            "title": "<string>",
            "inventory_count": 123
          }
        },
        "quantity": 123,
        "cart_id": "<string>",
        "cart_line": {
          "kind": "shopify",
          "merchandise_id": "gid://shopify/ProductVariant/1001",
          "product_id": "gid://shopify/Product/100",
          "quantity": 1,
          "attributes": [
            {
              "key": "__lion_sfp_id",
              "value": "19fdf4cb"
            }
          ]
        },
        "current_cart_state": {
          "in_cart": true,
          "cart_requirements_met": true,
          "cart_requirements_detail": {
            "minimum_cart_total": {
              "state": "no_requirement"
            },
            "minimum_line_item_quantity": {
              "state": "no_requirement"
            }
          }
        }
      }
    ],
    "email_marketing_consent": {
      "state": "subscribed"
    },
    "sms_marketing_consent": {
      "state": "subscribed"
    },
    "receipt_upload_url": "<string>",
    "referral_urls": {
      "direct": "<string>",
      "facebook": "<string>",
      "twitter": "<string>",
      "email": "<string>",
      "whatsapp": "<string>",
      "instagram": "<string>",
      "device_share": "<string>"
    }
  }
}

{
  "error": {
    "message": "<string>",
    "details": {}
  }
}

{
  "error": {
    "message": "<string>",
    "code": "<string>",
    "details": {}
  }
}

{
  "error": {
    "message": "<string>",
    "code": "<string>",
    "details": {}
  }
}

{
  "error": {
    "code": "not_found",
    "message": "<string>"
  }
}

{
  "error": {
    "code": "customer_blocked",
    "message": "<string>"
  }
}

{
  "error": {
    "code": "rate_limited"
  }
}