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io.github.Yuikij/mcp-turtle-noir

by Yuikij · remote · local (npm) · no sign-in to list tools · v1.3.0 · published by GitHub user Yuikij

Play Turtle Soup (lateral thinking puzzles) against a strict AI host with yes/no questioning.

Changes · 3
CompareRegistry entry

3 tools: 3 change things.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http turtle-noir https://turtlenoir.com/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

3 tools

Changes things 3Claude Code: ask
  • ask_questionAsk one yes/no style question about the current puzzle.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Ask one yes/no style question about the current puzzle. The AI host answers with one of four judgments: 是(Yes) / 不是(No) / 是也不是(Both) / 没有关系(Irrelevant), plus solve progress (0-100).
  • give_up_and_revealReveal the hidden solution and end the session.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Reveal the hidden solution and end the session. Only allowed once solve progress reaches 60.
  • start_sessionStart a new Turtle Soup (lateral thinking puzzle) session.No findings

    Why it is in this group

    • The name "start_session" says "start": a word for a change.
    Description, as the server wrote it
    Start a new Turtle Soup (lateral thinking puzzle) session. Returns the surface story; the hidden solution stays on the server. Optional filters: region (CN/US/JP), difficulty, keyword.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.3.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http turtle-noir https://turtlenoir.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__turtle-noir__start_session",
      "mcp__turtle-noir__ask_question",
      "mcp__turtle-noir__give_up_and_reveal"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as turtle-noir. Review it before you use it.