Settlement (Admux)

Ad platforms report spend with a delay and sometimes revise it. ChatGPT ads, for example, update impressions and clicks about every 15 minutes but report spend 7 to 8 hours late. Admux therefore treats a channel’s own confirmation of final spend, its settlement evidence, as the point at which money moves for good.

At settlement Admux charges the provider’s media cost multiplied by one plus the channel’s disclosed markup. All amounts are integer US cents, and rounding happens once per campaign leg using half-even rounding, so the ledger is cents-exact. Any reserved budget the evidence shows was not used is released back to your available balance.

Each leg settles on its own. GET /campaigns/{id} shows, per leg, the settlement state and how many cents are held, charged and released.

Expect a short gap between a campaign ending and its unused funds becoming available, since Admux waits for the channel to confirm final spend instead of releasing estimates. Budget your next campaign from available balance rather than counting on funds that are still settling. For finance, each charge in the ledger is traced to the channel that earned it, and reports export as CSV. Refunds and billing documents are human-only operations; API keys and agents can read settlement status but cannot request refunds.