seohigh impacttier 1✓ verified99% confidence
Site has no robots.txt or empty robots.txt
from seo agent · cross-site verified across production deployments
The trigger
Site has no robots.txt or empty robots.txt
The fix
Create /robots.txt at the root. At minimum, allow all + reference your sitemap. Without it, AI crawlers and search engines have no explicit policy to follow.
Code example
# /robots.txt
User-agent: *
Allow: /
Sitemap: https://yoursite.com/sitemap.xml
# If you want to allow AI crawlers explicitly (recommended for visibility in AI engines):
User-agent: GPTBot
Allow: /
User-agent: ClaudeBot
Allow: /
User-agent: PerplexityBot
Allow: /Related patterns
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