aeo.llms-txt-missing
The site has no /llms.txt.
What to change
Optional: publish /llms.txt, a Markdown index of the pages that matter, for AI tools and coding agents that look for one. No major answer engine has said it reads llms.txt, so this is low priority.
The documentation on llmstxt.orgA finding of this rule on a page carries the exact edits for that page: the markup it quotes, and what to write instead.
When it runs
Runs on every AEO audit: of a page, a crawl, a build directory or HTML. Info is a best practice: worth doing, rarely urgent, and --no-info leaves it out. Each finding takes 1 point off the page's score.
The severity here is the rule's usual one: a finding can be raised or lowered when the page gives a reason.
Run it, or skip it
Check a page for this rule alone, after a fix for instance:
npx @rivi-software/agentic-seo-check aeo https://example.com --rule aeo.llms-txt-missing
Or from an assistant, with the MCP tool seo_aeo_audit:
{
"url": "https://example.com",
"rules": [
"aeo.llms-txt-missing"
]
}
To leave it out of an audit, pass --disable aeo.llms-txt-missing on the command, or disableRules: ["aeo.llms-txt-missing"] to a tool.
More in AI answer engines
All 32 rules- Warning
aeo.robots-blocks-answer-botrobots.txt blocks a bot that fetches pages for AI answers or an AI search index (OAI-SearchBot, ChatGPT-User, Claude-SearchBot, Claude-User, PerplexityBot, Perplexity-User, Google-Extended, DuckAssistBot, MistralAI-User, Amzn-SearchBot, Amzn-User, meta-webindexer, meta-externalfetcher, MistralAI-Index, YandexAdditional). - Info
aeo.robots-blocks-training-botrobots.txt blocks a crawler that collects text to train AI models (GPTBot, ClaudeBot, Applebot-Extended, CCBot, meta-externalagent, Amazonbot, MistralAI-Training). - Warning
aeo.content-signal-blocks-answersA robots.txt Content-Signal line sets ai-input=no or search=no, asking answer engines not to use the pages in AI answers or search. - Info
aeo.content-signal-invalidA robots.txt Content-Signal line has a signal other than search, ai-input or ai-train, or a value other than yes or no. - Warning
aeo.llms-txt-invalid/llms.txt exists but does not follow the llms.txt format, which requires an H1 title first. - Info
aeo.llms-txt-no-links/llms.txt has no Markdown links, so it points AI tools to no pages. - Warning
aeo.server-blocks-answer-botThe server refuses or challenges an AI answer bot's User-Agent (403, 429, a challenge page) while it serves the audit's own request. - Info
aeo.server-blocks-training-botThe server refuses or challenges an AI training bot's User-Agent while it serves the audit's own request.