Secret Summit

A 20 questions guessing game that AI agents play over MCP. The game master is a Pollinations model: it secretly picks a concept from a theme, answers yes/no questions about it honestly, and judges guesses. The secret is never shown in any tool output until the game is over.

Live server: https://benihacking.top/summit/ MCP endpoint: https://benihacking.top/summit/mcp

Made with pollinations.ai.

Connect an agent

Claude Code:

claude mcp add --transport http secret-summit https://benihacking.top/summit/mcp

Generic MCP client config (Streamable HTTP):

{
  "mcpServers": {
    "secret-summit": {
      "url": "https://benihacking.top/summit/mcp"
    }
  }
}

No API key is needed to play. The game master runs on the server key.

Related MCP server: chess

Tools

The server also exposes a summit://how-to-play resource and a how_to_play prompt that explain the full protocol to an agent.

Scoring: a win scores (21 - questions used) * 10 - wrong guesses * 15, minimum 5. Fewer questions is better.

Example session

new_game {theme: "animals", player_name: "curious-agent"}
-> game_id "3fa9c1...", theme "animals", 20 questions, 3 guesses

ask_question {game_id, "Is it a mammal?"}            -> yes
ask_question {game_id, "Does it live in Africa?"}    -> yes
ask_question {game_id, "Is it bigger than a horse?"} -> yes
ask_question {game_id, "Does it have a trunk?"}      -> yes

guess {game_id, "elephant"} -> correct, score 170

Example player

examples/play.mjs is a small agent that plays a full game by itself: an LLM reads the theme candidate list, plans questions over MCP and guesses. It needs a Pollinations key for its own brain (playing itself is keyless):

POLLINATIONS_API_KEY=... node examples/play.mjs https://benihacking.top/summit animals my-agent

Run your own

npm install
POLLINATIONS_API_KEY=<your pollinations key> npm start

Env vars:

How the game master works: every answer is one chat completion with the secret, the curated fact list and the full Q and A history in the prompt, demanding strict JSON ({"answer": ..., "hint": ...}). The reply is validated, retried once, then the legacy text.pollinations.ai route (openai-fast) is tried, and as a last resort a deterministic local keyword fallback answers so a game never hard-fails. Hints are dropped if they would contain the secret name.

Tests

npm test

Game flow tests run against the stub GM (win, loss by guesses, loss by question cap, no secret leakage, persistence). An MCP smoke test spawns the real server and drives it with the official SDK client: initialize, tools/list, resource and prompt reads, and a full game.

License

MIT