React on Post

This endpoint allows adding a reaction to a LinkedIn post on behalf of a connected LinkedIn account. Reactions create visible engagement with a user’s content and can be used as part of automated engagement workflows.

Supported LinkedIn reaction types include:

• LIKE = 1

• CELEBRATE = 2

• SUPPORT = 3

• LOVE = 4

• INSIGHTFUL = 5

• FUNNY = 6

A reaction can only be added to an existing post. Therefore, before using this endpoint, the client must first retrieve the list of posts for a profile.

Workflow

Adding a reaction requires two steps:

1. Retrieve posts from the target profile using the Get All Posts endpoint.
   This step is required to obtain the "urn".

GET /api/v1/posts

1. Send a reaction request using the React on Post endpoint with the retrieved "urn".

Without a valid "urn", the reaction cannot be executed.

POST  /api/v1/posts/reactions

Limits

To prevent abuse and maintain platform safety, the following limit applies:

Up to 100 reactions per LinkedIn account per day.

If the limit is exceeded, the API returns an error response.