ActionTrelloUpdated September 2026
How do I assign a Trello card to a member?
Short answer: You can add member to card in Trello by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the Trello Add Member to Card 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.
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 |
|---|---|---|---|
Card ID cardId | string | Required | Card ID |
Member ID memberId | string | Required | Member ID |
Sample request
{"cardId": "{{trigger.cardId}}","memberId": "{{trigger.memberId}}"}
Returns
["member123"]
Use these fields in downstream nodes for routing, logging, or error handling.
Triggered by
Apps that pair well as the trigger for Add Member to Card.
Any of these apps can fire this action as part of a workflow.
FAQ
Questions about Add Member to Card.
What does the Add Member to Card action do in Trello?
Assigns a member to a Trello card. Used for AI-driven routing or for auto-adding the on-call person to incoming bugs.
What inputs does Add Member to Card require?
Required: Card ID, Member 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 run history shows the failed step with its input and the error message Trello 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 Add Member to Card support batch operations?
Run Add Member to Card 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 Trello's rate limits.
More actions
Other Trello actions.
Action
Add Checklist Item
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.
ActionAdd Comment
Adds a comment to a Trello card with optional @mentions. Used for automation activity logs, AI summary notes, or status broadcasts.
ActionAdd Label to Card
Adds a label to a Trello card by label ID. Use to tag cards based on their content (e.g. AI classification) or to auto-categorize new work.
ActionArchive Card
Archives (closes) a Trello card. Hidden from the board but recoverable; the reversible alternative to Delete Card.
ActionCreate Board
Creates a new Trello board with name, optional template, and default lists. Useful for templated project provisioning per customer.
ActionCreate Card
Creates a new card on a Trello board list with name, description, due date, labels, members, and position. The standard write action for piping forms or tickets into Trello.