aeo.content-signal-blocks-answers
A 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.
What to change
Set ai-input=yes and search=yes in the Content-Signal line if answer engines should use the content; ai-train=no can stay to opt out of training. Example: `Content-Signal: search=yes, ai-input=yes, ai-train=no`.
The documentation on contentsignals.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. A warning is a problem that costs a page ranking, clicks or citations. Each finding takes 5 points 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.content-signal-blocks-answers
Or from an assistant, with the MCP tool seo_aeo_audit:
{
"url": "https://example.com",
"rules": [
"aeo.content-signal-blocks-answers"
]
}
To leave it out of an audit, pass --disable aeo.content-signal-blocks-answers on the command, or disableRules: ["aeo.content-signal-blocks-answers"] to a tool.
More in AI answer engines
All 32 rules- Warning
aeo.robots-txt-unreachablerobots.txt answers a server error or does not answer, and crawlers treat that as "crawl nothing" (RFC 9309). - Error
aeo.robots-blocks-search-crawlerrobots.txt blocks a search crawler whose index AI answers draw on: Googlebot (AI Overviews, AI Mode), Bingbot (Copilot) or Applebot (Siri, Spotlight). - 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). - 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. - Info
aeo.llms-txt-missingThe site has no /llms.txt. - 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.