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Workflow Actions

React To A Comment

Excerpt: Acknowledge comments on your posts with a reaction — a lightweight way to keep engagement going when a full reply isn't needed.

Action Overview

The React To A Comment action adds a reaction to a comment on the selected LinkedIn post — it does not post a written reply. Pair it with the New Post Comment trigger, which supplies the comment to react to, and make sure an earlier step finds or creates a contact — the action can't run without one. Use it to acknowledge every commenter with minimal effort, or as a lighter-weight alternative to Reply To A Comment when a full reply isn't needed.

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Important: Requires a Contact This action can't run without a contact in the workflow. If you're chaining it directly from New Post Comment, add a Find Contact action (by ID) first — creating the contact if none is found.

Use Cases

  • Lightweight Acknowledgment – React to every comment automatically, so no one is left unacknowledged even when a reply isn't warranted
  • Volume Handling – On high-comment posts, react to everything and reserve replies for the comments that need one
  • Layered Engagement – React first, then reply where it matters, for a two-tier response strategy

Inputs and Required Data

Comment ID (required) – Identifier of the comment to react to
Example: from the New Post Comment trigger payload

Post ID (required) – Identifier of the post the comment is on
Example: from the New Post Comment trigger payload

Reaction Type (required) – The type of reaction to apply. Supported values:

  • Like
  • Celebrate
  • Support
  • Insightful
  • Curious

Example: Celebrate

Company Provider ID (optional) – React as a company page instead of an individual (must have permission to act on its behalf)
Example: 436356

Obtaining Inputs

  • Comment ID and Post ID come directly from the New Post Comment trigger payload
  • Select the Reaction Type based on your engagement strategy
  • Provide Company Provider ID only when reacting as a company page

Response

The React To A Comment action returns:

  • Response – Confirmation that the reaction was added

Example Response (plain text)

Response: ReactionAdded

Workflow Integration

  1. Trigger the Workflow – Start with New Post Comment
  2. Find or Create the Contact – Add a Find Contact action (by ID) using the Provider ID from the trigger; create the contact if none is found
  3. React To A Comment – Map Comment ID, Post ID, and your chosen Reaction Type
  4. Escalate If Needed – Add Reply To A Comment afterward for comments that need a full response
  • New Post Comment (trigger) – Provides the Comment ID and Post ID this action requires
  • Reply To A Comment – A full text reply when acknowledgment alone isn't enough
  • React To A Post – React to the post itself rather than a specific comment

Common Errors and Troubleshooting

Action Fails to Run

  • Cause: The Comment ID or Post ID wasn't passed through from the trigger
  • Solution: Map both fields directly from the New Post Comment trigger payload — both are required

Workflow Gets Stuck Before This Action

  • Cause: No contact was found or created earlier in the workflow
  • Solution: Add a Find Contact action (by ID) before this step, creating the contact if none is found

Invalid Reaction Type

  • Cause: A reaction type outside LinkedIn's supported values was provided
  • Solution: Use only the supported values — Like, Celebrate, Support, Insightful, Curious

Best Practices

  • Use React To A Comment for volume, and reserve Reply To A Comment for comments that ask a question or need a real answer
  • Choose reactions strategically — "Insightful" for thoughtful comments, "Celebrate" for good news or wins
  • If reacting as a company, keep reaction choice consistent with your brand voice