aeo.server-blocks-answer-bot
The server refuses or challenges an AI answer bot's User-Agent (403, 429, a challenge page) while it serves the audit's own request.
What to change
Allow these bots at the CDN, firewall or bot-protection layer (for example the CDN's AI crawler settings or a WAF rule). The probe sent the bots' User-Agent from this machine, not from the bots' own IP ranges, and a CDN that verifies bots may let the real ones through: confirm in the CDN's bot logs before changing rules.
A 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 with --ai-bots, on the command or the local server. 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 --ai-bots --rule aeo.server-blocks-answer-bot
Or from an assistant, with the MCP tool seo_aeo_audit:
{
"url": "https://example.com",
"aiBots": true,
"rules": [
"aeo.server-blocks-answer-bot"
]
}
To leave it out of an audit, pass --disable aeo.server-blocks-answer-bot on the command, or disableRules: ["aeo.server-blocks-answer-bot"] to a tool.
More in AI answer engines
All 32 rules- 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. - 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. - 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. - Info
aeo.crawl-stoppedThe hosted server stopped requesting the site before the crawl was done: the site refused its requests (a challenge, HTTP 429), robots.txt asked for a Crawl-delay longer than a hosted crawl waits, or the server reached its request limit for the site. The audit covers the pages it read. - Info
aeo.bot-probe-inconclusiveThe AI bot probe could not run: the target is not a URL, or the audit's own request did not get the page.