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ActionLinkedInUpdated September 2026

How do I comment on a LinkedIn post?

Short answer: You can comment on linkedin post in LinkedIn by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the LinkedIn Comment on LinkedIn Post action to a workflow, map its 3 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.

Comment on LinkedIn Post in LinkedIn — start free All 8 LinkedIn actions
Comment on LinkedIn Post in LinkedIn — start free
Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

FieldTypeRequiredDescription
Post URN
post_urn
stringRequiredurn:li:share:71...
Actor URN (commenter)
actor_urn
stringRequired–
Comment Text
message
stringRequired–
Sample request
{
  "post_urn": "urn:li:share:71...",
  "actor_urn": "{{trigger.actor_urn}}",
  "message": "{{trigger.message}}"
}
Returns
{
  "id": "urn:li:comment:..."
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for Comment on LinkedIn Post.

Any of these apps can fire this action as part of a workflow.

Gmail → LinkedIn
1 Gmail triggers
Slack → LinkedIn
13 Slack triggers
Google Sheets → LinkedIn
2 Google Sheets triggers
HubSpot → LinkedIn
18 HubSpot triggers
FAQ

Questions about Comment on LinkedIn Post.

What does the Comment on LinkedIn Post action do in LinkedIn?
Posts a comment as the authenticated user (or organisation if connected as an org admin). For "react to mentions of our brand" or "engage with community" workflows.
What inputs does Comment on LinkedIn Post require?
Required: Post URN, Actor URN (commenter), Comment Text. Every input accepts a static value or a variable from any upstream node in your workflow.
Can I use dynamic inputs from earlier workflow nodes?
Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.
What happens if LinkedIn returns an error?
The run history shows the failed step with its input and the error message LinkedIn returned, so you can fix the input and run the workflow again. Automatic retries are built into HTTP steps only, where you can also set your own retry count and delay.
Does Comment on LinkedIn Post support batch operations?
Run Comment on LinkedIn Post inside a loop to process each item in an array. TinyCommand does not throttle calls for you, so for large arrays add a Delay step if you need to stay within LinkedIn's rate limits.
More actions

Other LinkedIn actions.

Action
Create LinkedIn Post
Publishes a personal-profile or company-page post with text body. For "cross-publish from blog to LinkedIn" content-distribution workflows.
Action
Create LinkedIn Image Post
Publishes a post with commentary plus image media. For "auto-share product launches with the launch graphic" or "publish team announcements with photos" workflows.
Action
Get Authenticated User
Returns the connected user's profile — name, headline, location, profile photo. Useful for "show me as who" introspection.
Action
Get LinkedIn Profile
Returns a LinkedIn profile by member ID. Scope and accessible-profiles depend heavily on LinkedIn API access tier; most workflows can only fetch the connected user's own profile.
Action
List Administered Organizations
Returns LinkedIn organisations (company pages) where the authenticated user has admin permissions. For resolving organisation IDs when publishing on behalf of a company page.
Action
List LinkedIn Connections
Returns the authenticated user's connections (subject to LinkedIn API access tier — connection-list access has been restricted post-2015). For most workflows, this is unavailable.
Comment on LinkedIn Post in LinkedIn — start free