Find Who Liked a LinkedIn Post (Post Reactions API)

// OVERVIEW

What it does

List the people who reacted to a LinkedIn post, including full author details.

These are warm leads who already engaged with your topic, the raw material for signal-based prospecting. Optionally target reactions on a specific comment.

// PARAMETERS

Inputs

Name	Type	Required	Description
`profileId`	string	Required	Connected LinkedIn profile.
`postId`	string	Required	The post's social_id (returned by Get User Posts), not the numeric ID in the post URL.
`commentId`	string	Optional	Get reactions on a specific comment instead of the post.
`limit`	number	Optional	Reactions per page, up to 100.
`cursor`	string	Optional	Pagination cursor.

// OUTPUT SHAPE

Example JSON output

{
  "items": [
    {
      "reaction_type": "LIKE",
      "author": {
        "provider_id": "ACoAA...",
        "name": "Jane Doe",
        "headline": "VP Sales at Acme",
        "company": "Acme",
        "profile_url": "https://www.linkedin.com/in/jane-doe"
      }
    }
  ],
  "cursor": "eyJwYWdlIjoy..."
}

// INVOCATION

How to call

Resource: PostOperation: Get Reactions

POST/v1/actions/get-post-reactions/v1

curl -X POST https://actions.periodix.net/api/v1/actions/get-post-reactions/v1 \
  -H "Authorization: Bearer YOUR_API_KEY" -H "Content-Type: application/json" \
  -d '{ "profileId": "prf_01H...", "postId": "urn:li:activity:73...", "limit": 100 }'

Example response

{
  "items": [
    {
      "reaction_type": "LIKE",
      "author": {
        "provider_id": "ACoAA...",
        "name": "Jane Doe",
        "headline": "VP Sales at Acme",
        "company": "Acme",
        "profile_url": "https://www.linkedin.com/in/jane-doe"
      }
    }
  ],
  "cursor": "eyJwYWdlIjoy..."
}

// CONSTRAINTS

Limits & status

Up to 100 per page, paginate with cursor. Automatic rate limiting.

// USED IN

Playbooks using this Action

Mine LinkedIn post engagement for intent signals
The people who like and comment on posts in your niche are already raising their hand, and that intent is spread across dozens of posts and buried in the feed. To work it by hand you first have to find the right posts, then open each one, scroll every reaction, read every comment, and copy profiles. It does not scale, so the warmest signals go to waste and teams keep buying cold lists instead.

// GET STARTED

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