Playbook: Run a Supply Path Audit on Your In-App Programmatic Buys

Playbook: Run a Supply Path Audit on Your In-App Programmatic Buys

Every hop in the chain skims margin and adds fraud surface. Trace it:
— Pull the sellers.json and app-ads.txt for the apps you're buying
— Verify each reseller is authorized — unauthorized lines in app-ads.txt = spoofable inventory
— Count the hops from your DSP to the publisher; more intermediaries = more take rate and risk
— Identify direct vs resold paths to the same app and prefer the shortest authorized one
— Check the bundle ID and app name in bid requests against the real store listing for spoofing
— Measure win rate and CPM per path; redundant long paths usually cost more for the same impression
— Consolidate to the cleanest direct paths and block the rest

✓ Cuts hidden tech-tax and spoofed-inventory exposure
✓ Uses public app-ads.txt / sellers.json — no special tooling
✗ Path consolidation can shrink reach short-term
✗ Smaller apps have messy or missing app-ads.txt

Verdict: Use direct authorized paths for in-app programmatic; skip long resold chains unless they prove unique, cheaper reach.
Best for: Programmatic buyers tightening in-app supply quality and margin.