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

# Likes lookup

> If you have been working with the standard v1.1 GET favorites/list endpoint, the goal of this. Reference for the X API v2 standard tier covering migrate.

### Likes lookup: Standard v1.1 compared to X API v2

If you have been working with the standard v1.1 [GET favorites/list](https://developer.x.com/en/docs/x-api/v1/tweets/post-and-engage/api-reference/get-favorites-list) endpoint, the goal of this guide is to help you understand the similarities and differences between the standard v1.1 and X API v2 Likes lookup endpoints.

With v2, we’ve also introduced a new liked users endpoint which allows you to get information about a Post's liking users.

* **Similarities**
  * Authentication
  * Rate limits
* **Differences**
  * Endpoint URLs

  * Request limitations

  * App and Project requirements

  * Request parameters

  * New JSON format

#### Similarities

**Authentication**

Both the standard v1.1 and X API v2 Likes lookup endpoints use [OAuth 1.0a User Context](/resources/fundamentals/authentication#oauth-1-0a-2) or [OAuth 2.0 Bearer Token](/resources/fundamentals/authentication#bearer-token-also-known-as-app-only). Therefore, if you were previously using the [GET favorites/list endpoints](https://developer.x.com/en/docs/x-api/v1/tweets/post-and-engage/api-reference/get-favorites-list) standard v1.1 endpoints, you can continue using the same authentication method if you migrate to the X API v2 version if you wish. 

Depending on your authentication library/package of choice, Bearer Token authentication is probably the easiest way to get started and can be set with a simple request header. To learn how to generate a Bearer Token, see [this OAuth 2.0 Bearer Token guide](/resources/fundamentals/authentication#bearer-token-also-known-as-app-only). 
 

**Rate limits**

The standard v1.1 GET favorites/list endpoint has a 75 requests per 15 minutes per user rate limit. The corresponding liked Posts endpoint in v2 also has this sam