MCP Turtle Noir MCP Server

by yuikij Your server? Claim it

answering

MCP Turtle Noir is answering right now. Last checked 6 min ago. 38 installs a week from npm. It exposes 3 tools. Last commit 21 Jul 2026.

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

Installs per day peak 257 · avg 14 · -82% w/w

a month agotoday

Uptime history 51 days of history · worst day 93%

51 days agonow

94.5%

Uptime 24h

86 of 91 checks

Tools

read from the server

382 ms

Response time

average over 24h

Installs / week

npm and PyPI

MCP Turtle Noir does not always answer

Over the last week it answered 98.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "mcp-turtle-noir": {
      "url": "https://turtlenoir.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mcp-turtle-noir]
url = "https://turtlenoir.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "mcp-turtle-noir": {
      "url": "https://turtlenoir.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mcp-turtle-noir": {
      "url": "https://turtlenoir.com/mcp"
    }
  }
}

This one needs environment variables set before it will start: TURTLE_NOIR_API_BASE_URL (Turtle Noir backend API base URL). The author declared them in the registry entry; get the values from the project itself.

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

ask

ask_question

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

give_up_and_reveal

Reveal the hidden solution and end the session. Only allowed once solve progress reaches 60.

start

start_session

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.

Endpoints

URL	Transport	State	Latency	Checked
https://turtlenoir.com/mcp	streamable-http	answering	400 ms	6 min ago

Alternatives to MCP Turtle Noir

same job, measured the same way

Veículo

by mcp-dir

Look up a vehicle by license plate against official sources (make/model, year, status, restrictions)

7 tools answering

Verity

by clawdio777

Real-time fact-checking MCP. Verifies claims against live sources with structured verdicts.

31 installs/wk local only

Receita Federal: Agenda Tributária

by mcp-dir

Receita Federal: Agenda Tributária, official-source lookup. Platform-hosted, pay per query with prep

7 tools answering

Agent Arcade MCP

by lulzasaur9192

Play Chess, Go, Trading & more against AI agents on Agent Arcade with Elo rankings

31 installs/wk local only

INMETRO Instrumentos: Veículos Tanque

by mcp-dir

INMETRO Instrumentos: Vehicles Tanque, official-source lookup. Platform-hosted, pay per query with p

7 tools answering

Sideways

by usesideways

Use Sideways for unexpected questions and lateral thinking prompts to break through mental blocks.

6 tools answering

Receita Federal NFS-e: Notas Recebidas

by mcp-dir

Receita Federal NFS-e: Notas Recebidas, official-source lookup. Platform-hosted, pay per query with

7 tools answering

Receita Federal: Simples (DASN SIMEI)

by mcp-dir

Receita Federal: Simples (DASN SIMEI), official-source lookup. Platform-hosted, pay per query with p

7 tools answering

MCP Turtle Noir — questions

Answers built from our own checks of this server.

What can MCP Turtle Noir do?

It exposes 3 tools, read directly from the server on our last check. Among them: ask_question, give_up_and_reveal, start_session. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is MCP Turtle Noir working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 86 of 91 checks got a reply (94.5%), average response time 382 ms. The bar chart above shows every period we have measured.

How do I connect MCP Turtle Noir?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does MCP Turtle Noir need an API key?

No. MCP Turtle Noir completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is MCP Turtle Noir?

It answers our handshake in 382 ms on average, which is faster than 42% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use MCP Turtle Noir?

The npm package mcp-turtle-noir was installed 38 times in the last week. Week over week that is -82%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is MCP Turtle Noir open source?

Yes — it is published under the MIT licence, written in JavaScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.