chooseBoolean

Sent when the engine needs a yes/no decision from the player — for example, whether to pay an optional cost such as buyback when casting a spell.

Arguments

input.type is "chooseBoolean". The remaining fields:

TypeScript

interface ChooseBooleanInput {
  presentation: PromptPresentation;
  confirmLabel: string;
  denyLabel: string;
}

Rust

#[serde(rename_all = "camelCase")]
pub struct ChooseBooleanInput {
    pub presentation: PromptPresentation,
    pub confirm_label: String,
    pub deny_label: String,
}

References: PromptPresentation

Rendering

A two-button prompt — the button text comes straight from confirmLabel and denyLabel, so the wording matches the effect (here, “Pay Buyback” / “No”).

Response

type ChooseBooleanOutput = { type: "decision"; value: boolean };

Return true to accept and false to decline.

Example

{
  "promptId": 7,
  "decidingPlayerId": "player-0",
  "input": {
    "type": "chooseBoolean",
    "presentation": {
      "title": "Buyback",
      "description": "Pay {3} more to return this spell to your hand as it resolves?",
      "targets": []
    },
    "confirmLabel": "Pay",
    "denyLabel": "Decline"
  }
}

{ "promptId": 7, "output": { "type": "decision", "value": true } }