> ## Documentation Index
> Fetch the complete documentation index at: https://developers.loyaltylion.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

You can use the LoyaltyLion Admin API to:

* push orders and activities to LoyaltyLion so they can trigger rules
* modify customers, for example, remove points or update birthday
* read information about customers and their activities

<Info>
  **Admin API or Headless API?**

  The [Admin API](/api-reference/introduction) is intended for moving data in and
  out of LoyaltyLion, such as retrieving customers and transactions, or tracking
  orders placed on custom ecommerce platforms. In general, if you need to interact
  with LoyaltyLion from your own backend - without any shopper interaction - the
  Admin API is what you need.

  The [Headless API](/headless-api/introduction) is designed for merchants and
  partners who want to build custom shopper-facing interfaces for their loyalty
  program, or integrate LoyaltyLion into a native mobile or POS app.
</Info>

## IP addresses

If you need to allow outbound connections to `api.loyaltylion.com` from your
servers, you can use the following IPv4 addresses:

* `35.71.187.221`
* `52.223.19.105`

## Rate limits

The API enforces a rate limit of **20 requests per second** for all endpoints,
unless otherwise stated.