Auto Top-Up / Replenishment — Refills a prepaid balance automatically when it crosses a floor, charging the stored payment method for a configured amount. It watches wallet drawdown and calls the payment layer, keeping usage flowing without a human buying credits at 2 a.m.
Auto Top-Up / Replenishment lives in the Consume & Meter phase of Fulfill & Bill — the stage where you activate what was sold, meter what's used, bill it right. In the corpus tool index this phase maps to the Meteringcategory.
The critical requirements that test this capability in UsagePricing's Usage-based billing & metering rubric — scored tool profiles link from the list below.
Can a customer (and your product) see an accurate credit or spend balance mid-period?
The bar: Live balance API with prepaid credits, drawdown, expiry rules, and hard-cap enforcement at request time.