AI Playable Ad Generator

{
  "type": "object",
  "required": [
    "logo",
    "sprites",
    "game_name",
    "cta_text",
    "store_url"
  ],
  "properties": {
    "logo": {
      "type": "image",
      "description": "The game's logo (transparent PNG preferred). Shown on the end card."
    },
    "brief": {
      "type": "string",
      "description": "Free-form direction for the playable: what the game is and what to feature — the core fantasy, the genre, the one mechanic and hook you want, the feeling to convey. The engineer researches the game (and the store listing) and designs the core concept itself, so this is guidance, not a fixed menu. Leave empty to let it infer the best concept from the game name, store URL, and the assets.\n"
    },
    "sprites": {
      "type": "array",
      "items": {
        "type": "image"
      },
      "maxItems": 12,
      "minItems": 1,
      "description": "Transparent PNG sprites of the game's objects. Order matters."
    },
    "cta_text": {
      "type": "string",
      "maxLength": 24,
      "minLength": 2,
      "description": "CTA button text, e.g. \"Play Now\", \"Install\"."
    },
    "headline": {
      "type": "string",
      "maxLength": 40,
      "description": "Short end-card hook (2–5 words). Auto-written if empty."
    },
    "game_name": {
      "type": "string",
      "maxLength": 40,
      "description": "The game's name (used for the title and end card)."
    },
    "store_url": {
      "type": "string",
      "description": "App Store / Google Play URL the CTA opens."
    },
    "brand_color": {
      "type": "color",
      "description": "Accent color for the CTA. Derived from the logo if empty."
    },
    "orientation": {
      "enum": [
        "portrait",
        "landscape",
        "both"
      ],
      "type": "string",
      "description": "Target orientation. Default both."
    }
  }
}

{
  "type": "object",
  "properties": {
    "playables": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "playable_url": {
            "type": "file",
            "description": "Drive path to the single-file .html playable; served to readers as a stable media URL. Rendered inline as a live HTML preview.",
            "contentMediaType": "text/html"
          }
        }
      },
      "maxItems": 1,
      "minItems": 1,
      "description": "The produced playable (exactly one)."
    }
  }
}