What was the cats.txt hoax?

SEO expert Mark Williams-Cook created a completely fake 'standard' called cats.txt, complete with a formal specification, claiming it would help with SEO and AI visibility by declaring website 'cat mascots.' Crawlers requested it, Google indexed it, and AI systems began confidently explaining its benefits — until he revealed it was an experiment to show how easily unverified claims spread.

Why should law firms care about fake SEO standards?

Law firms are frequent targets for 'AI will fix your intake/SEO' gurus selling unproven tools, rebranded black-hat tactics as 'GEO,' or hype around new 'must-have' files and standards. Following them wastes budget, risks non-compliance with Google guidelines, and distracts from durable fundamentals like proper document collection and client experience.

How do I spot a false guru in AI/SEO for law firms?

Red flags include promising certain rankings or 'AI visibility' with secret methods, pushing unverified new 'standards' without proof, rebranding old tactics with AI buzzwords, lacking case studies specific to law firms, or pressuring quick decisions without audits. Always demand transparent methodology and results tied to real business outcomes like more qualified leads or faster case prep.

False Gurus, Fake Standards & the cats.txt Hoax: What Law Firms Must Know in 2026

The SEO and AI marketing world is full of gurus promising that the next secret file, prompt, or "standard" will get your law firm to the top of Google and every AI answer. In 2025-2026, one of the most revealing examples was the cats.txt hoax — a completely made-up "standard" that fooled crawlers, Google indexing, and AI systems into treating it as legitimate advice.

This isn't just funny internet lore. It exposes a dangerous trend: false gurus and hype merchants capitalizing on AI anxiety to sell unproven tactics to busy professionals like lawyers. Law firms, already targeted by intake automation scams and "AI will replace your receptionist" pitches, are prime marks for the next wave of fake GEO/AI SEO "experts."

The cats.txt Experiment: A Fake Standard Goes Viral

SEO professional Mark Williams-Cook created and published a formal draft specification for cats.txt — a text file you supposedly place in your site root to declare your website's "feline staff, mascots, or personalities." It was styled exactly like legitimate files: robots.txt, humans.txt, security.txt.¹

Fields included Name, Role, Description, Breed, and even PurrLevel (0-10). He posted it on LinkedIn as "the missing standard for SEO and GEO," listing "benefits" like enhanced knowledge panels, entity linking, and better AI grounding.²

It worked alarmingly well:

Crawlers (Googlebot and AI bots) started requesting /cats.txt on sites.
Google indexed the spec page.
AI Overviews and tools like ChatGPT began confidently explaining how implementing cats.txt would help rankings and AI visibility.

Only after it spread did Williams-Cook reveal it was an experiment to demonstrate how easily "consensus" content fools AI systems and how LLMs model what people *say* is true rather than what is verifiable.³

Key takeaway from the hoax

"Large language models do not inherently know what is authoritative. If enough content presents something as real, the model may confidently describe it as real."

— Edward Sturm, The Edward Show (breaking down the experiment)

This Is Part of a Larger Trend of False Gurus and Hype

cats.txt isn't isolated. The same pattern appears with:

LLMs.txt hype: Promoted as a must-have "standard" for AI visibility, but called out as myth by experienced SEOs with no evidence it moves the needle beyond basic fundamentals.⁴
Rebranded black-hat tactics sold as "GEO Experts" or "AI SEO" services, often with fake reviews, AI-generated "experts," and pressure tactics.⁵
AI tool and "website builder" scams specifically targeting small businesses and professionals (including lawyers) with promises of instant rankings or clients.⁶

These gurus thrive because AI search makes everything feel urgent and mysterious. "Just add this file and AI will love you" sounds easier than earning real authority through helpful content, proper technical setup, and genuine client results.

Why Law Firms Are Especially Vulnerable

Law firms deal with high-stakes intake, document chaos, and client trust. Scammers exploit that by promising "AI that handles your documents and SEO" or "get in every AI answer for bankruptcy searches." The result is wasted money on tools that don't integrate with real workflows (like proper GetDocs-style collection before matters hit case management) and distraction from what actually moves the needle: accurate client data early, ethical AI use, and evidence-backed marketing.

Following unverified "standards" or gurus can also create compliance risks if it leads to manipulative tactics that violate search guidelines.

How to Protect Your Firm

Verify claims with primary sources: If someone promotes a new "standard," check the actual spec and independent testing (like Williams-Cook eventually provided for cats.txt).
Demand proof tied to your practice area: Real case studies with law firms, before/after on qualified leads or intake time — not generic "we boosted visibility."
Focus on fundamentals first: Clean data collection, strong on-site experience, consistent brand mentions, helpful content that answers real client questions. These work regardless of the latest hype.
Be skeptical of "secret" or "AI-only" shortcuts: If it sounds too good or requires buying their tool/file/template immediately, walk away.

Sources & Further Reading

Mark Williams-Cook's cats.txt Specification Draft: markwilliamscook.com/cats-txt-specification-draft-v1-0
Mark Williams-Cook's LinkedIn post introducing the "standard": Introducing cats.txt: The Missing Standard for SEO and GEO
Video breakdown: The Cats.txt SEO Hoax That Fooled AI
SEO community discussion on LLM/cats.txt manipulation: X discussion thread
Broader scam warning: How to spot black-hat SEO professionals

These links are provided for claim verification and reader context; Iron Noodle does not endorse any third-party source.

The cats.txt hoax was funny until you realize how many "experts" would have sold implementations of it. Law firms don't have time for that. Focus on real systems that deliver documents client-ready and marketing that attracts the right clients — not the next viral file.