AI Product Index / served over HTTPS
Several crawlers will not follow a plain-http origin at all, so this is less a ranking factor than a precondition.
Serve over HTTPS; several crawlers will not follow an http:// origin at all.
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.