Contract 11.5.0

Card responses carry each card's art: one image per form the Clash Royale catalog lists (base, evolution, hero), served from Elixir's own origin, so an agent or page can show the card without building a file name or calling Supercell's CDN.

• cards_card: card.art maps each form the card has to its image, 285 pixels wide (the same address ending -128.png or -192.png is narrower), or null for a tower troop or a card the catalog has not listed.
• cards_catalog: each card carries art when ids or query name the cards. The whole unnarrowed catalog leaves art out to stay under the result cap; compact never carries it.
• Show a played form's art, else the base card's: a form the catalog lists before Supercell publishes its image does not answer yet (Hero Electro Wizard and Evo Electro Giant on 2026-10-08).

Additive: no arguments change. JSON API 3.1.0 is unchanged; the public card doors (/api/public/cards and /api/public/cards/{id}) gain art too.