Instagram: boost-inclusive post totals (total_views, total_likes, total_comments)

For Instagram accounts connected with Facebook Login, please also request Meta's total_views, total_likes and total_comments media metrics and return them in /v1/analytics beside views, likes and comments. Meta documents these as including engagement from promoted/boosted/ad media, while the standard metrics are organic only.

Why: we're moving our social reporting (~32 markets, ~128 accounts) from Supermetrics to Zernio. Instagram and Facebook are migrating now, and we're keeping Supermetrics only where Zernio has gaps (see our TikTok and Pinterest requests). Many of our posts are boosted, and we report post performance to the businesses featured in them. Today a boosted post shows only its organic figures, so the value of the boost is invisible in the report. Boost-inclusive totals beside the organic ones would let us show both without building a separate ads-account integration. That would make Zernio a stronger replacement than what we're moving away from.