> ## 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.

# List attachments

> List URL and uploaded-file attachments on a Trello card.

`listAttachments` reads all attachments Trello returns for a card.

```ts automations/list-trello-attachments.automation.ts theme={null}
import { automation, onHttpRequest } from "automate.ax"
import { listAttachments } from "automate.ax/trello"

export default automation("List Trello attachments", () => {
  onHttpRequest({ scope: "automation" })
  listAttachments({ card: "card-id" })
})
```

Required `card` accepts an ID, short link, or URL. Optional `account` defaults to the project binding. Returns `Signal<TrelloAttachment[]>`; URL attachments can have `bytes` or `mimeType` set to `null`, while `isUpload` distinguishes uploaded files from links.