> ## Documentation Index
> Fetch the complete documentation index at: https://docs.automate.ax/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Automate.ax automations are TypeScript programs.
> Use Bun for installation and command examples.
> Use Automate.ax for the product name and automate.ax for the package, CLI, and domain.
> Treat documented public APIs as current; do not invent transitional or deprecated names.

# Trello

> Manage Trello boards, lists, cards, comments, attachments, and checklists from TypeScript automations.

Import Trello actions and triggers from `automate.ax/trello`. Actions accept plain values or compatible signals. Triggers watch one statically selected board and return signals containing normalized Trello event data.

```ts theme={null}
import { automation } from "automate.ax"
import { addComment, onTrelloCardCreated } from "automate.ax/trello"

export default automation("Welcome new Trello cards", () => {
  const event = onTrelloCardCreated({ board: "board-id" })
  addComment({ card: event.card.id, text: "Thanks! We will review this card." })
})
```

## Accounts

Leave `account` unset to use the project's default Trello account binding. Pass a binding name or `trelloAccount(...)` reference when an automation uses more than one account. Trigger account selection must be static. See [Integration accounts](/concepts/integration-accounts).

Most card and board actions accept a stable ID, short link, or standard Trello URL through `card` or `board`. List, label, member, checklist, item, comment, and attachment inputs use stable IDs.

## Common outputs

Card outputs include `id`, `name`, `description`, `closed`, `boardId`, `listId`, `url`, `shortUrl`, `shortLink`, `position`, `dueAt`, `startAt`, `dueComplete`, `memberIds`, `labelIds`, `labels`, `lastActivityAt`, and `subscribed`. Board and list outputs similarly use camelCase and convert provider timestamps to `Date` values.

<CardGroup cols={2}>
  <Card title="Boards and lists" href="/reference/integrations/trello/actions/list-boards">
    Discover boards, members, labels, and lists.
  </Card>

  <Card title="Cards" href="/reference/integrations/trello/actions/create-card">
    Create, find, move, assign, and archive cards.
  </Card>

  <Card title="Card resources" href="/reference/integrations/trello/actions/add-comment">
    Work with comments, attachments, and checklists.
  </Card>

  <Card title="Board events" href="/reference/integrations/trello/triggers/on-board-event">
    Start automations from board or semantic card activity.
  </Card>
</CardGroup>