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SoundSyncAudio software platform

Guide

Subscription Bundle Checkout

Create fixed recurring bundle checkout sessions with POST /api/subscriptions/bundles/checkout, server-authoritative bundle lookup, provider confirmation, duplicate prevention, and entitlement fulfillment.

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Live Moonwave FX cart review showing a Luxon subscription line item, tax presentation, Merchant of Record label, and secure payment action.
Live Moonwave FX billing workspace showing current charges, fees, usage, statements, and billing controls.
Live Moonwave FX analytics workspace showing revenue, product, customer, activation, and download reporting.

SoundSync

Checkout safeguards

These safeguards are release-gated by the subscription bundle lifecycle proof.

SafeguardCurrent status
Server-authoritative bundle lookupImplemented
Shared interval validationImplemented for monthly/yearly fixed bundles
Provider subscription checkout sessionImplemented through Stripe or fixture provider mode
Duplicate subscription preventionImplemented with change recommendation
Webhook idempotency for bundle subscriptionImplemented
Entitlement grants for every included productImplemented