Per-channel performance for the window from the Seller Center shop-tab stats — one entry per channel (shop_tab, search, other) with GMV, impressions, units sold and customers.

baseline is TikTok's previous-period value for the same metrics, summed across the window. industry_median is the typical seller in this shop's industry — a benchmark, not an additive quantity, so it is reported as the most recent day in the window that carried one (as_of) rather than summed or averaged. It is null when TikTok returned no benchmark for the window; the daily collection path does not always include one.

Max range 90 days. Single-shop only — set x-shop-id to a specific shop ID. An empty result is a normal 200 response: Seller Center collection is per-shop and still rolling out.