Storekept

A multi-tenant Shopify App Store app that backs up a merchant's entire store — fifteen data types, from products and collections to themes, inventory, and discounts — and restores it idempotently. I took it over from a freelance brief and now own it: the closest thing I run to revenue, payouts already wired.

Verifiability is the product: a harness runs backup → restore → re-capture → field-level manifest assertion against a real store, so a failing diff is the feedback loop. Storage is content-addressed and deduplicated — each binary asset kept once and shared across snapshots. AES-256-GCM at rest, debounced webhook-driven backups, cross-store migration, and a single cost-throttled Shopify Admin GraphQL client with bulk-operation JSONL reassembly. 204 unit tests and the verification harness, green.