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ActionTodoistUpdated June 2026

How do I post a comment to a Todoist task?

Short answer: You can add comment in Todoist by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the Todoist Add Comment action to a workflow, map its 2 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.

Add Comment in Todoist — start free All 27 Todoist actions
Add Comment in Todoist — 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
Task ID
task_id
stringRequiredTodoist task ID — numeric string. Find via List Tasks.
Comment
content
stringRequiredComment. Example: Updated the requirements doc.
Sample request
{
  "task_id": "e.g. 7654321",
  "content": "e.g. Updated the requirements doc."
}
Returns
{
  "id": "comm123",
  "content": "Updated the requirements doc.",
  "task_id": "7654321",
  "posted_at": "2025-01-15T12:00:00Z"
}

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

Triggered by

Apps that pair well as the trigger for Add Comment.

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

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

Questions about Add Comment.

What does the Add Comment action do in Todoist?
Adds a comment to an existing Todoist task or project. Use it to log automation activity, attach context from another system, or post status updates.
What inputs does Add Comment require?
Required: Task ID, Comment. 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 Todoist returns an error?
The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.
Does Add Comment support batch operations?
Yes. Run Add Comment inside a Loop node to process arrays. TinyCommand handles Todoist's rate limits automatically so you don't have to throttle manually.
More actions

Other Todoist actions.

Action
Complete Task
Closes a Todoist task. Recurring tasks roll forward to their next due date instead of disappearing.
Action
Create Label
Creates a new personal label in Todoist, optionally with a color. Useful for syncing your tag taxonomy from another system.
Action
Create Project
Creates a new project in Todoist with name, color, parent project, and view style (list, board, calendar). The starting point for project-templating flows.
Action
Create Section
Creates a new section inside a Todoist project. Sections are how board-view columns are organized.
Action
Create Task
Creates a new task in Todoist with content, description, project, section, due date (supports natural language like "next monday"), priority, labels, and assignee.
Action
Delete Comment
Permanently deletes a comment from Todoist by ID. Used for cleanup of automation-posted comments.
Add Comment in Todoist — start free