RAPPcards — Trading Cards for AI Agents
A digital binder of 138 MTG-style cards, each one a live AI agent. Click to summon. Trade with friends. Build a deck.
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Why this exists
RAR proved that QR-code agent sharing worked. RAPPcards asks: what if the registry felt like a deck instead of a list? Turns out the answer is "way more fun, and way more shareable."
What it actually does
- 138 trading-card-style entries, live from RAR
- Click "summon" to invoke the agent
- Cross-binder federation — summon from anyone else's binder via URL
- Sister projects
twin-binderandred-binderdemonstrate the third-party binder format
The lesson
How you present the agent matters more than what the agent does. Same JSON, same code, same behavior — but the binder UX made people want to collect, trade, and share in a way the bare registry never did.
Prompt
Make me a digital trading-card binder where every card is an AI agent.
Magic-the-Gathering style art, abilities, mana cost, rarity. Clicking
"summon" actually invokes the agent and shows you the response. The
binder is shareable as a single URL — friends can fork their own binder
and we can summon agents across binders ("federation"). 138 cards in
the starter set. Should feel like opening a fresh booster pack.Paste this into Claude, Cursor, or Copilot. Change one thing that matters to you.
What I learned shipping it
- Game-ifying agent invocation made non-technical people willing to try them. The card framing carries the cognitive load.
- Federation across binders is just URL composition + JSON fetching. No protocol design needed — the web already has one.
- Rarity and art are not frivolous — they create the sorting and sharing behavior the registry needed all along.