This page aggregates measured, corroborated evidence: donors' iPhones recorded apps contacting this domain, every claim below was reported by separate accepted donations and published under a human verdict (later rows for an approved app inherit its verdict). A contact is a measurement, not an accusation — it does not show what data was sent.
gdx-assets.costco.com
classified as first-party · 2
What our research panel found AI-drafted · human-reviewed
We ask several independent AI models the same question and publish their answers separately — cross-vendor agreement is evidence against fabrication, and disagreement is worth seeing. 3 of 3 models answered, overall confidence medium — classification split: anthropic=first-party, openai=cdn, gemini=first-party. A human reviewed this domain's claims before anything here published.
Anthropic Claude — first-party
gdx-assets.costco.com is a subdomain of the app publisher's own domain (Costco Wholesale), and the 'assets' naming suggests first-party static asset or content delivery, though the exact backing infrastructure/CDN provider is not known to me. Contact with the publisher's own infrastructure does not imply a data flow beyond the app's declared collection of app interactions and diagnostics.
OpenAI — cdn
The domain is a Costco subdomain and its "assets" naming strongly suggests delivery of app or web assets rather than a distinct third-party data recipient. The provided privacy label covers several relevant app-use and diagnostics categories, and the contact alone does not establish an uncovered data flow.
Google Gemini — first-party
gdx-assets.costco.com is a first-party domain owned by Costco, likely used for loading app assets and content. First-party functional requests do not indicate undisclosed data collection or tracking.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
| Costco Wholesale | — | 4 | 16 | 2026-07-28 → 2026-07-29 |
The corpus grows one report at a time: donate your App Privacy Report — anonymous by design.
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