# Trello AI integration on Definable

> A web-based, kanban-style, list-making application.

## What this connects

A web-based, kanban-style, list-making application.

Vendor: https://trello.com

## Tools available

**322** tools available. First 12:

- `TRELLO_ADD_BOARDS` — Add board — Creates a new Trello board; the 'name' parameter is required for creation, and various preferences can be customized or cloned from a source board.
- `TRELLO_ADD_BOARDS_LISTS_BY_ID_BOARD` — Add new list to board (Deprecated) — DEPRECATED: Use TRELLO_LIST_CREATE_LIST instead. Creates a new, empty list on a specified, existing Trello board, typically used as a column or category for organizing cards.
- `TRELLO_ADD_CARDS` — Add card — Creates a new card in a Trello list. Only `idList` is required; `idBoard` is optional as the API determines the board from the list.
- `TRELLO_ADD_CARDS_ACTIONS_COMMENTS_BY_ID_CARD` — Add comment to card — Adds a new text comment, which can include @mentions, to a Trello card specified by its ID; file attachments are not supported via this action.
- `TRELLO_ADD_CARDS_ATTACHMENTS_BY_ID_CARD` — Add attachment to card — Adds an attachment to a Trello card by `idCard`; specify either a `file` to upload or a `url` to link, but not both.
- `TRELLO_ADD_CARDS_CHECKLISTS_BY_ID_CARD` — Add checklist to card via id — Adds a checklist to a Trello card: use `value` to add a specific existing checklist, `idChecklistSource` to create a new checklist by copying an existing one (optionally using `name` for the new checklist's name), or `name` to create a new empty checklist from scratch.
- `TRELLO_ADD_CARDS_ID_LABELS_BY_ID_CARD` — Add label to card — Adds an existing label to a Trello card; `idCard` identifies the card and `value` is the ID of the label to add. Both card and label must already exist.
- `TRELLO_ADD_CARD_VOTE` — Add member vote to card — Casts a 'yes' vote for a specified member on a Trello card; a member can only vote once per card.
- `TRELLO_ADD_CHECKLIST_ITEM` — Add check item to checklist (Deprecated) — DEPRECATED: Use TRELLO_ADD_CHECKLISTS_CHECK_ITEMS_BY_ID_CHECKLIST instead. Adds a new check item to an existing checklist on a specific Trello card.
- `TRELLO_ADD_CHECKLISTS` — Add checklist to card — Creates a new checklist on a Trello card, either by name or by copying from `idChecklistSource`, targeting an `idCard` or `idBoard`; this action creates only the checklist structure, not its items.
- `TRELLO_ADD_CHECKLISTS_CHECK_ITEMS_BY_ID_CHECKLIST` — Add check item to checklist — Adds a new check item to a specified Trello checklist; this action does not update existing check items.
- `TRELLO_ADD_LABELS` — Create label on board — Creates a new label with a specified name (required) and color on a Trello board (idBoard required); this action defines the label but does not apply it to cards.

## Auth

Auth schemes: `OAUTH1`. Managed by Definable: `OAUTH1` — no client credentials required from the user.

## How agents use Trello

Inside a Definable workflow, Trello is one of the tools the **Distributor specialist** can call. Example coordination patterns:

- **Researcher → Trello** — the Researcher (GPT-5.5) pulls context from Trello (records, threads, documents), synthesises findings, and briefs the rest of the team.
- **Writer → Distributor → Trello** — the Writer (Claude Opus 4.7) drafts copy in brand voice, the Verifier passes it, then the Distributor writes the result into Trello (create record, post message, draft email).
- **Designer / Engineer → Distributor → Trello** — the Designer ships an asset or the Engineer ships a code change, the Distributor delivers it via Trello (attach file, open PR comment, post status).

The Verifier checks every Trello call. On rate limit, schema drift, or auth refresh it self-heals and retries — the workflow completes without manual intervention.

## Categories

- project management — https://definable.ai/apps/category/project-management/
- task management — https://definable.ai/apps/category/task-management/

## Related

- HTML page: https://definable.ai/apps/trello/
- Same category (project management): https://definable.ai/apps/category/project-management/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt