Get analytics
GET /analytics returns published posts in a date range with each channel’s
latest metrics, plus totals for every post in the range.
Response
engagement is likes + comments + shares + saves. impressions is null
when none of the networks involved report views. Each channel only has the
metrics its network provides.
Postbase refreshes metrics for recent posts in the background, so a post
published in the last hour may show little yet; metrics_updated_at says when
a channel was last read. The same numbers appear on the Analytics page in
the app.