How to add checklist item in Trello

Add Checklist Item in Trello — 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.

Field	Type	Required	Description
Checklist ID checklistId	string	Required	Checklist ID
Item Name name	string	Required	Item Name
Pre-checked checked	boolean	Optional	Pre-checked

Sample request

{
  "checklistId": "{{trigger.checklistId}}",
  "name": "{{trigger.name}}",
  "checked": "{{trigger.checked}}"
}

Returns

{
  "id": "item123",
  "name": "Write tests",
  "state": "incomplete"
}

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

FAQ

Questions about Add Checklist Item.

What does the Add Checklist Item action do in Trello?

Adds an item to an existing Trello checklist on a card with optional pre-checked state. Used for templated work breakdowns or for capturing follow-ups from a meeting.

What inputs does Add Checklist Item require?

Required: Checklist ID, Item Name. 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 Trello 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 Checklist Item support batch operations?

Yes. Run Add Checklist Item inside a Loop node to process arrays. TinyCommand handles Trello's rate limits automatically so you don't have to throttle manually.

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