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Can Claude check if a link is nofollow?

Not reliably from a chat. The nofollow mark sits in the link's rel attribute in the HTML, and the page text Claude reads with web search may not include it. If you upload or paste the HTML, Claude can read the rel value itself, and Claude Code can fetch it with curl on your machine. Connect the Backlink Checker server (free token) and Claude fetches the page and lists every link to your domain with its anchor text, the exact rel value, and whether the whole page is marked nofollow or noindex.

Connect with a free token Backlink Checker MCP server

What Claude does alone, and what needs the server

Claude on its own

  • Reads the rel value in HTML you upload or paste.
  • Explains nofollow, sponsored and ugc.

With the Backlink Checker server

  • The rel value of every link to your domain on a live page.
  • The page-level robots signals checked in the same call.
  • A check you can rerun after a site promises a change.

A real call to the live server

We sent this to the hosted server on 2026-11-05. The answer below is the server's own text, not a mock-up. Live values will differ when you ask.

You ask

Is the Wikipedia link to modelcontextprotocol.io dofollow?

Tool call

link_check {"page_url":"https://en.wikipedia.org/wiki/Model_Context_Protocol","target_domain":"modelcontextprotocol.io"}

Server answer

Page: https://en.wikipedia.org/wiki/Model_Context_Protocol Status: 200 Robots: indexable Page-level nofollow: no Links to modelcontextprotocol.io: 4 - nofollow (rel="mw:extlink nofollow") anchor: "modelcontextprotocol .io" href: https://modelcontextprotocol.io - nofollow (rel="mw:extlink nofollow") anchor: ""Architecture overview"" href: https://modelcontextprotocol.io/docs/learn/architecture - nofollow (rel="mw:extlink nofollow") anchor: ""Security Best Practices"" href: https://modelcontextprotocol.io/docs/2026-07-28/tutorials/security/security_best_practices - nofollow (rel="mw:extlink nofollow") anchor: "Official website" href: https://modelcontextprotocol.io

Run on 5 November 2026 against live pages, so a later run can differ.

Connect it in 1 minute

Get a free token first. No account, 30 days, 600 calls an hour. Put it in the URL in place of <token>. In Claude.ai or Claude Desktop open Settings, then Connectors, then Add custom connector, and paste the URL.

1. Free token

curl -s -X POST https://mcp.zovo.one/mcp/token

Connector URL (replace <token>)

https://mcp.zovo.one/mcp/backlink-checker/t/<token>

Claude Code

claude mcp add --transport http backlink-checker https://mcp.zovo.one/mcp/backlink-checker/t/<token>

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "backlink-checker": {
      "url": "https://mcp.zovo.one/mcp/backlink-checker/t/<token>"
    }
  }
}

VS Code (.vscode/mcp.json)

{
  "servers": {
    "backlink-checker": {
      "type": "http",
      "url": "https://mcp.zovo.one/mcp/backlink-checker/t/<token>"
    }
  }
}

All 6 tools, free and Pro limits and more prompts are on the Backlink Checker MCP server page.

Questions

Can Claude check if a link is nofollow?
Not reliably from a chat. The nofollow mark sits in the link's rel attribute in the HTML, and the page text Claude reads with web search may not include it. If you upload or paste the HTML, Claude can read the rel value itself, and Claude Code can fetch it with curl on your machine. Connect the Backlink Checker server (free token) and Claude fetches the page and lists every link to your domain with its anchor text, the exact rel value, and whether the whole page is marked nofollow or noindex.
Why does the Wikipedia rel value have two words?
Wikipedia's software adds its own mw extlink marker to every external link, next to nofollow. The nofollow part is the value search engines read.
What is free, and what does Pro add?
Single-URL link checks and robots checks are free with no monthly cap, and link_audit takes 3 URLs per call. Nothing is stored, so every check is a fresh fetch. Pro is $19 once for the Backlink Checker server, or $39 once for all 49 servers. It removes the 3 URL limit on link_audit.
Is the server free?
The hosted Backlink Checker server has a free tier. A free token lasts 30 days and allows 600 calls an hour, with no account. Some features are Pro, and the server page lists what is free and what is not.

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