action_done

Your user asked, and it is done: "Added INNER GOODNESS Oat Milk 1L to your cart · Undo". No card to tap first. An action that names the action that takes it back (undo) is a write that can run at once, and the server draws this line in the answer instead of a confirm_card. Adding to a cart, following, saving: changes the user would not want to approve every time, and can take back with one tap.

Rendered natively by the Flutter SDK since 0.69.0 and the web SDK since 0.46.0. A build that does not declare it is never sent one: its writes keep their confirmation card.

When it is drawn

Only by the server, never by the model. A write with an undo whose inverse is offered in the same turn, to a build that draws this block, runs with no card. A destructive action always asks. A write without an undo always asks. You can keep the card for one that has an undo with confirm: "always", in your code or under Actions › the action › Safety in the console.

The line is the model's sentence about what happened, in the user's language, held to the same rule as every card: any number in it must be one your actions returned. Without one, it is your confirmTemplate.

Props

Every block also carries type and a required fallback_text of 1 to 300 characters.

On the wire

{
  "id": "blk_14",
  "type": "action_done",
  "fallback_text": "Added INNER GOODNESS Oat Milk 1L to your cart",
  "props": {
    "invocation_id": "inv_3c90",
    "action_name": "add_to_cart",
    "text": "Added INNER GOODNESS Oat Milk 1L to your cart",
    "undo_until": "2026-10-29T10:10:00.000Z"
  }
}

Interaction

Undo runs the inverse once through POST /v1/invocations/:id/undo, however often it is tapped. The server claims it, then either runs a console action's inverse itself or hands the SDK the inverse to run with its handler, and the line says "Undone". A failed undo says so, and can be tried again. Undo is offered for ten minutes after the action ran; the server refuses it after that, whatever the screen shows.

Accessibility

A status line: announced when it appears, and again when it says "Undone".