Find LinkedIn Post Commenters (Post Comments API)

// OVERVIEW

What it does

List the comments on a LinkedIn post, including the full comment text and full author details.

Commenters are a higher-intent signal than reactions, and their words give AI real material to personalize outreach with.

// 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.
`limit`	number	Optional	Comments per page, up to 100.
`cursor`	string	Optional	Pagination cursor.

// OUTPUT SHAPE

Example JSON output

{
  "items": [
    {
      "text": "This matches what we see in outbound.",
      "author": {
        "provider_id": "ACoAA...",
        "name": "Marcus Patel",
        "headline": "Head of Growth at Northwind",
        "company": "Northwind",
        "profile_url": "https://www.linkedin.com/in/mpatel"
      }
    }
  ],
  "cursor": "eyJwYWdlIjoy..."
}

// INVOCATION

How to call

Resource: PostOperation: Get Comments

POST/v1/actions/get-post-comments/v1

curl -X POST https://actions.periodix.net/api/v1/actions/get-post-comments/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": [
    {
      "text": "This matches what we see in outbound.",
      "author": {
        "provider_id": "ACoAA...",
        "name": "Marcus Patel",
        "headline": "Head of Growth at Northwind",
        "company": "Northwind",
        "profile_url": "https://www.linkedin.com/in/mpatel"
      }
    }
  ],
  "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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