How to list labels in Trello

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
Board ID boardId	string	Required	Board ID

Sample request

{
  "boardId": "{{trigger.boardId}}"
}

Returns

[
  {
    "id": "label123",
    "name": "Bug",
    "color": "red"
  },
  {
    "id": "label456",
    "name": "Feature",
    "color": "blue"
  }
]

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

FAQ

Questions about List Labels.

What does the List Labels action do in Trello?

Lists all labels on a Trello board with their name and color. Used to populate a label picker or to resolve a name to a label ID.

What inputs does List Labels require?

Required: Board ID. 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 List Labels support batch operations?

Yes. Run List Labels 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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