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Kuuhaku MCP Server

answering

Kuuhaku is answering right now. Last checked 13 min ago. 109 installs a week from npm.

Ask who calls a route, what a change breaks or who reads a field, across a system's repos.

Installs per day peak 292 · avg 10
a month agotoday
Uptime history 24 days of history · worst day 98%
24 days agonow
100.0%
Uptime 24h
91 of 91 checks
—
Tools
hidden behind auth
196 ms
Response time
average over 24h
109
Installs / week
npm and PyPI

Nothing serious here today

Today is the operative word: we check Kuuhaku 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 13 min ago.

run in your terminal
claude mcp add kuuhaku --transport http https://api.kuuhaku.dev/mcp
Settings → Connectors → Add custom connector, then paste this address
https://api.kuuhaku.dev/mcp
~/.codex/config.toml
[mcp_servers.kuuhaku]
url = "https://api.kuuhaku.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "kuuhaku": {
      "url": "https://api.kuuhaku.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "kuuhaku": {
      "type": "http",
      "url": "https://api.kuuhaku.dev/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but it did not say what kind of credentials it expects.

Endpoints

URLTransportStateLatencyChecked
https://api.kuuhaku.dev/mcp streamable-http needs auth 246 ms 13 min ago

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Kuuhaku — questions

Answers built from our own checks of this server.

Why is there no tool list for Kuuhaku?
The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.
Is Kuuhaku 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 196 ms. The bar chart above shows every period we have measured.
How do I connect Kuuhaku?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own credentials: it refuses anonymous clients.
Does Kuuhaku need an API key?
Yes. Every time we knock, Kuuhaku answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.
How fast is Kuuhaku?
It answers our handshake in 196 ms on average, which is faster than 69% 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 Kuuhaku?
The npm package kuuhaku was installed 109 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.