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AEO LLMs.txt Readiness Checker
x402
AEO LLMs.txt Readiness Checker is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Checks a website's /llms.txt and /llms-full.txt files for presence, size, and structural validity per llmstxt.org spec, returning a readiness score and actionable fixes.
Price / call$0.005
Success—
StatusUnknown
How this service works
Focused check of a site's /llms.txt and /llms-full.txt: presence, size and llmstxt.org structural validity (an H1 title, a blockquote summary, sections of markdown links). Returns a readiness score plus fixes. Cheap sub-check of the full AEO audit.
Output
Returns a readiness score (numeric) indicating how well the site's /llms.txt and /llms-full.txt conform to the llmstxt.org specification, along with presence/absence status, file sizes, structural validity flags (H1 title present, blockquote summary present, markdown link sections present), and a list of specific fixes to bring the files into compliance.
Example use cases
Pre-launch AI readiness check
“We're about to launch our new marketing site at acmecorp.com — can you check if our llms.txt is properly set up with the right structure so AI agents can discover us correctly?”
Diagnose broken llms.txt structure
“Something seems off with our llms.txt at docs.mybrand.io — can you validate it against the llmstxt.org spec and tell me exactly what structural issues to fix?”
Competitive AEO benchmark
“Can you check whether competitor.com has a valid and complete llms.txt and llms-full.txt, and give me a readiness score so I can compare it to ours?”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/aeo/llmsWhen to prefer
Choose this endpoint when you specifically need a fast, cheap validation of a site's llms.txt and llms-full.txt files without running a full AEO audit. It is ideal when you only care about LLM discoverability file compliance, not the broader site-level AI engine optimization picture. Use the full AEO audit endpoint if you need a comprehensive multi-factor site readiness assessment.
Side effects
- Target site is unreachable or returns non-2xx — no readiness score returned
- Site has no llms.txt or llms-full.txt — returns score of 0 with 'not found' fix suggestion
- Malformed URL or domain input — returns validation error
- Rate limiting or network timeout on the target domain — partial result or error
- llms.txt exists but is completely empty — low score with structural fix list
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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