Criterion MCP Server

by balajsaleem Your server? Claim it

answering

Criterion is answering right now. Last checked 31 min ago. Last commit 28 Oct 2026.

Semantic search across 6,236 Quran verses and 12,416 authentic Hadiths for Islamic guidance.

Uptime history 91 days of history · worst day 96%

91 days agonow

100.0%

Uptime 24h

23 of 23 checks

—

Tools

hidden behind auth

174 ms

Response time

average over 24h

Stars

last commit 28 Oct 2026

Nothing serious here today

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

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 31 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add criterion --transport http https://criterion.life/api/mcp

Settings → Connectors → Add custom connector, then paste this address

https://criterion.life/api/mcp

~/.codex/config.toml

[mcp_servers.criterion]
url = "https://criterion.life/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "criterion": {
      "url": "https://criterion.life/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "criterion": {
      "type": "http",
      "url": "https://criterion.life/api/mcp"
    }
  }
}

Endpoints

URL	Transport	State	Latency	Checked
https://criterion.life/api/mcp	streamable-http	answering	114 ms	31 min ago

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Criterion — questions

Answers built from our own checks of this server.

Is Criterion working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 23 of 23 checks got a reply (100.0%), average response time 174 ms. The bar chart above shows every period we have measured.

How do I connect Criterion?

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.

Does Criterion need an API key?

No. Criterion completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. This is what we observed, not what the docs claim.

How fast is Criterion?

It answers our handshake in 174 ms on average, which is faster than 75% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Criterion open source?

We cannot say either way: written in TypeScript, 20 stars on GitHub and 12 open issues, but we could not determine the licence, and without one the code is not open source by default.