Recurring Charge Detector Table of Contents - Overview - Input contract - Cadences - Workflow - Status transitions - Output contract - Guardrails Overview A subscription audit is mostly the same question asked many ways: which charges arrive on a clock? This skill clusters historical transactions by merchant + cadence + typical amount, requires ≥ 3 confirming occurrences before promotion, and tracks each cluster's lifecycle (active → suspected dormant → cancelled). It computes annualized cost for each active recurring entry — the single most useful number in a subscription audit ("you are spe…