The caller's own usage: calls/units today, 7d and 30d, by endpoint and status, plus the tier's daily quota

Scoped strictly to the presented key's own label (index1 in the Analytics Engine dataset); no cross-key view. Requires an API key: anonymous callers are counted per IP-day for quota purposes, not per caller, so there is nothing to report back to them. Answers are cached 60 seconds per key so a dashboard refresh cannot turn into Analytics Engine SQL API traffic. Not billable against the daily quota.