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Brusnica Development

Website GEO audit in Claude

Claude checks whether ChatGPT, Claude and Perplexity can see your site, with evidence and a fix for every finding.

InstallSource on GitHub

Version 1.0.0 · · MIT license

Claude CodeExample of Claude's answer with the skill

Run a GEO audit on https://example.com

A1 robots.txt
fail
GPTBot has its own group, so Disallow from * doesn't apply to it
A3 AI bot response
not run
Cloudflare challenges bots; needs access to its settings
C1 HTML without JS
pass
H1 and 627 words in the raw HTML
E1 JSON-LD
fail
Organization declared on three pages with different data
E3 llms.txt
fail
404

Fix A1 and E1 first: they are blockers. Make the changes in the code?

Install and run

  1. Install the skill

    Paste into a terminal: the command unpacks the skill into ~/.claude/skills/. Then restart Claude Code.

    mkdir -p ~/.claude/skills
curl -fsSL https://brusnica.dev/skills/geo-audit.skill -o /tmp/geo-audit.skill
unzip -o /tmp/geo-audit.skill -d ~/.claude/skills/

    For one project only, unpack it into .claude/skills/ inside that project.

  2. Ask Claude

    • Run a GEO audit on https://example.com
    • Why doesn't ChatGPT know about my site?
    • Check robots.txt and structured data for AI search

    The skill loads on its own when a task matches. Your own words work.

What the skill does

Four layers in order: access (robots.txt per AI crawler, blocks), content (page text in the HTML without JavaScript), entity (one schema.org organization, llms.txt) and answers (an answer in the first paragraph of key pages). A check it couldn't run is reported as not run, never as a pass.

  • Evidence for every finding

    A status code, command output or a quote from the page.

  • RFC 9309 rules

    The effective rule for each bot, plus groups that accidentally open closed sections.

  • Fixes in your code

    With repo access, Claude fixes robots, sitemap, llms.txt and JSON-LD, then rechecks.

You'll need

  • Claude Code or the Claude app
  • curl and Python 3 (standard library)
  • Network access to the site you audit

Good to know

curl can fake a crawler's user agent, not its IP: if the site sits behind a WAF or bot protection, the skill flags it. Nobody can guarantee AI citations; the audit removes blockers.

Read SKILL.md before installing, it's plain text. A skill runs with your files and network.

Common questions

SEO is about search rankings; GEO is about AI assistants reading your site and citing you. GEO adds AI crawler rules and first-paragraph answers on top of SEO.

Not for the report, the URL is enough. For fixes, open Claude in the project folder.

No. It only contacts the site you're auditing.

Yes, it's MIT-licensed: use, change and share it, keeping the copyright notice.

Free tools that pair with it

Want the result rather than the skill?

We'll run the audit and make the fixes ourselves: SEO, GEO, structured data, speed — on your site or a new Next.js one.

Websites & web apps
Website GEO audit skill for Claude Code | Brusnica Dev