User-scoped API
CPX is fetched per end user using the configured App ID and secure hash. Offerwall Ad creates a stable external identity from the publisher visitor ID.
Required postback values
The CPX receiver supports the required user_id, trans_id, amount_local and amount_usd values. The USD amount is used for upstream revenue accounting while local amount is retained for reconciliation.
Dashboard tester
An unmapped dummy CPX test callback can receive a test acknowledgement without crediting money. Real cpxu_* user mappings must still resolve for live crediting.