Shopify Apps

# Shopify Apps ## Patterns ### React Router App Setup Modern Shopify app template with React Router ### Embedded App with App Bridge Render app embedded in Shopify Admin ### Webhook Handling Secure webhook processing with HMAC verification ## Anti-Patterns ### ❌ REST API for New Apps ### ❌ Webhook Processing Before Response ### ❌ Polling Instead of Webhooks ## ⚠️ Sharp Edges | Issue | Severity | Solution | |-------|----------|----------| | Issue | high | ## Respond immediately, process asynchronously | | Issue | high | ## Check rate limit headers | | Issue | high | ## Request protected customer data access | | Issue | medium | ## Use TOML only (recommended) | | Issue | medium | ## Handle both URL formats | | Issue | high | ## Use GraphQL for all new code | | Issue | high | ## Use latest App Bridge via script tag | | Issue | high | ## Implement all GDPR handlers |