Fetch a single webmaster (affiliate NETWORK) by UUID: aggregate stats PLUS top_creatives — the creatives this webmaster re-uploads the MOST, ordered by the webmaster's OWN in-slice ad count (slice.ads_in_slice desc — the deliberate slice order, matching what the profile page shows), media stripped/free. Each entry's total_ads is the creative's market-wide family size, folded best-effort from family redirects and floored at ads_in_slice — total_ads == ads_in_slice therefore often means 'family cards not yet built', not 'this webmaster owns the whole market'; it is context, not the sort key. analytics_pending=true means the canonical PostgreSQL identity exists but its ClickHouse aggregate is not published yet, so zero counters are not analytical zeroes. fanpages_status explicitly reports advertiser-aligned lifecycle enrichment as available, partial, unavailable or not_applicable; an omitted fanpages array is therefore never evidence that a page is alive. The id MUST be the canonical UUID returned by search_webmasters; domain names and display names are rejected instead of silently widening to the whole database. Present top_creatives as the headline final step; for the rest of the network use search_creatives?webmaster_id / search_ads?webmaster_id, and download media with get_media (entity_type=creo). identifier_inventory_semantics explains why historical page/domain/pixel inventory counts are not comparable to total_ads. attribution_link_stats.merge_edges answers WHY these identifiers sit in one network: each entry is a {page_id, page_name, domain, ads} pair — that fanpage ran exactly that many ads on that landing domain, and such a pair is what merges two networks into one (an ad whose domain belongs to network A and whose fanpage belongs to network B fuses them permanently). Weigh the edges before claiming a single operator: a 1-3 ad edge next to 100+ ad edges is a thin bridge, typically a catalog/feed ad, and is weak evidence of shared ownership; identifiers with no edge at all are inherited from earlier merges and prove nothing today. QUOTA: 1 token (one entity card). TIKTOK: with source=tiktok this fetches the TikTok cluster card instead (business-id rollup, same UUID space as search_webmasters source=tiktok results) — ⚠️ costs 100 tokens and requires a Pro-or-higher plan; the Meta-only embeds (top_creatives, attribution link-stats) are omitted on the TikTok card.
