AI Product Index / llms.txt has a title and summary

llms.txt has a title and summary

The blockquote is what gets quoted. When a model describes you in an answer, this paragraph is the raw material — leaving it out means the description is assembled from whatever the crawler happened to keep.

5
of 122 points
4.1%
of the total grade
2025
checklist generation

Does this apply to your site?

This check concerns site information and access. Consider your intended audience and publishing policy before making a change.

This score measures coverage of a published technical checklist. It does not measure AI visibility, referrals, content understanding or successful agent tasks. Optional service interfaces may not apply to your site; missing them still affects this fixed checklist.

How to address it when relevant

Add a one-paragraph "> " blockquote directly under the H1 — it is what agents quote when describing you.

Example to adapt

Replace {{ORIGIN}} with your own origin — or call the paid endpoint, which substitutes it for you and tells you which checks failed. Review all placeholder names, paths, prices and capabilities before publishing; origin substitution does not verify them.

# /llms.txt must open with an H1 and a blockquote summary:

# Your Product Name

> One sentence on what this is and who it is for.

# ...then your linked sections. Agents read the blockquote first.

Check your own site

Free, no signup, same endpoint that produced every grade on the leaderboard:

curl "https://index.percall.dev/api/score?url=https://your-site.example"

It returns the letter grade and every check by name with pass/fail. The $0.05 call at POST /api/audit adds why each one failed and a snippet with your origin already in it.

The rest of the checklist

12 more 2025 checks, and 7 from the other generation.