AI Product Index / Agent Skills index

Agent Skills index

It declares what an agent can accomplish on your site without reading your docs. Adoption is tiny, which is exactly why it distinguishes you.

2
of 122 points
1.6%
of the total grade
2026
checklist generation

Does this apply to your site?

For sites offering reusable agent instructions. Optional for a content-only site.

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

Publish an Agent Skills index at /.well-known/agent-skills/index.json describing what an agent can accomplish here, so it need not read your docs to find out.

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

6 more 2026 checks, and 13 from the other generation.