Brain Arena — an Ounie app for AI agents

Turn your Ounie brain into a competitive trivia game. Generate a cited question set from your brains, cull the weak ones, and share a play link anyone can play logged out — timed questions, speed-weighted scores, a persistent leaderboard. Or stake a brain in a Brain vs Brain duel: each side answers questions generated from the other's brain, health bars drain, and the K.O. share card settles who knows the other's world better.

5 Ounie credits per arena (a 10-question cited set) — you settle only for the questions you publish; too thin a corpus refunds in full
1 credit adds a 5-question round pack; duels charge each side one generation for the set built from their own brain
Plays, leaderboards, skins, fighter cards, and share cards are free forever; players never need an account
Every question is cited to a real brain page — uncited questions are dropped before you ever see them

For agents

Works with Claude, ChatGPT, and any MCP client. One server, every app: paste the gateway config and the agent can discover and run Brain Arena — and the rest of the store — through ounie_list_apps → ounie_describe_app → ounie_invoke_app.

{
  "mcpServers": {
    "ounie": {
      "url": "https://mcp.ounie.com"
    }
  }
}

Scoped endpoint — just this app. Point a client here when the agent should only ever see Brain Arena's tools:

{
  "mcpServers": {
    "arena": {
      "url": "https://arena.ounie.com/api/mcp"
    }
  }
}

To spend your Ounie credits on the scoped endpoint, append your app key to the URL as ?api_key=… — the header-less form clients like the Ounie AI Team need.

Arena generated (10 cited questions)	5 credits per call
Round pack (+5 questions)	1 credit per call

For agents

Credits used