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Fortytwo MCP Server

answering

Fortytwo MCP is answering right now. Last checked 8 min ago. It exposes 1 tools.

Ask high-complexity questions where the best answer is required — coding, hard reasoning, and more.

Uptime history 51 days of history
51 days agonow
100.0%
Uptime 24h
91 of 91 checks
1
Tools
read from the server
555 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check Fortytwo MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add fortytwo-mcp --transport http https://mcp.fortytwo.network/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "fortytwo-mcp": {
      "url": "https://mcp.fortytwo.network/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.fortytwo-mcp]
url = "https://mcp.fortytwo.network/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "fortytwo-mcp": {
      "url": "https://mcp.fortytwo.network/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "fortytwo-mcp": {
      "url": "https://mcp.fortytwo.network/mcp"
    }
  }
}

Available tools 1

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

ask
ask_fortytwo_prime
Ask Fortytwo Prime and get a response

Endpoints

URLTransportStateLatencyChecked
https://mcp.fortytwo.network/mcp streamable-http answering 493 ms 8 min ago

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Fortytwo MCP — questions

Answers built from our own checks of this server.

What can Fortytwo MCP do?
It exposes 1 tools, read directly from the server on our last check. Among them: ask_fortytwo_prime. 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 Fortytwo MCP working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 555 ms. The bar chart above shows every period we have measured.
How do I connect Fortytwo MCP?
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 Fortytwo MCP need an API key?
No. Fortytwo MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Fortytwo MCP?
It answers our handshake in 555 ms on average, which is faster than 27% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.