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Corrie Site Check MCP Server

answering

Corrie Site Check is answering right now. Last checked 2 min ago. It exposes 1 tools.

Free website check: HTTPS setup and security headers, scored with plain-English fixes. No account.

Uptime history 4 days of history
4 days agonow
100.0%
Uptime 24h
92 of 92 checks
1
Tools
read from the server
462 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 3

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 14 October 2026. No other catalogue keeps this.

14 Oct a tool description was rewritten check_website
14 Oct a tool changed the parameters it asks for check_website
14 Oct a tool changed version

Nothing serious here today

Today is the operative word: we check Corrie Site Check 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 2 min ago.

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

website
check_website
Loads the homepage of one public website over HTTPS, the way a visitor's browser would, and reports its HTTPS setup, TLS certificate and security headers (Strict-Transport-Security, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, cookie flags, mixed content and server banners). Returns a score from 0 to 100, a verdict, the TLS certificate issuer and expiry date, and each finding with a severity (critical, high, medium or low) and a plain-English fix that includes nginx or Cloudflare examples. Use it for questions like 'is example.com secure?', 'what security headers is my site missing?', 'when does this site's certificate expire?' or 'why does Chrome say my site is not secure?'. Input is a bare domain (example.com) or an https:// address. A bare domain checks the homepage; if you include a path, that one page is loaded instead. It does not log in, submit forms, scan ports, crawl other pages or test for vulnerabilities, and nothing is stored. It refuses private, internal and local addresses, plain http://, ports other than 443 and addresses with a user name; those come back as an isError result with a message saying what to change. A check usually takes 1 to 10 seconds. Running it twice on the same site gives the same result unless the site changed. Read corrie://docs/scoring for how the score and verdict work.

Endpoints

URLTransportStateLatencyChecked
https://corrie.io/mcp streamable-http answering 451 ms 2 min ago

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Corrie Site Check — questions

Answers built from our own checks of this server.

What can Corrie Site Check do?
It exposes 1 tools, read directly from the server on our last check. Among them: check_website. 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 Corrie Site Check working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 462 ms. The bar chart above shows every period we have measured.
How do I connect Corrie Site Check?
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 Corrie Site Check need an API key?
No. Corrie Site Check 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 Corrie Site Check?
It answers our handshake in 462 ms on average, which is faster than 25% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.