MCP Turtle Noir MCP Server

The official MCP server for Turtle Noir - The lateral thinking puzzle game. Test your deductive reasoning against a strict AI host. The mcp turtle noir mcp server wraps that behind the Model Context Protocol, so an assistant can use it rather than through you.

What it actually does

This package is a thin MCP layer over Turtle Noir backend APIs and is designed for stdio transport.

• start_session: start a new puzzle session
• ask_question: ask one question and receive a structured result
• give_up_and_reveal: reveal the solution (subject to backend reveal policy)
• Multilingual MCP output (zh-CN, en-US, ja-JP) via language
• Keeps puzzle solutions on the backend during normal gameplay

Adding it to your client

mcp-turtle-noir on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.

Configuration

You will need 4 environment variables: TURTLE_NOIR_API_BASE_URL, TURTLE_NOIR_API_TIMEOUT_MS, TURTLE_NOIR_API_KEY, YOUR_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.

• Node.js 18+

Caveats

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
• MCP clients confirm each tool call by default. Leave that on until you have watched what the mcp turtle noir mcp server does with a few real requests.

When to reach for it

This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. It is maintained by yuikij; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.