Shopware 6 Store API — Headless Storefront

Procedural guide for building headless storefronts against Shopware 6.6+ Store API. Covers the stateful/write operations: context, cart, checkout, and account. For product data, listings, and pages use the Frontic skill instead.

Architecture

Frontic Client  →  Product data, listings, pages, categories (read)
Store API       →  Context, cart, checkout, account, payment (write/session)

Both share the same Shopware backend. Frontic handles optimized data delivery; the Store API handles session-bound operations.

Essential Headers

Every request to /store-api/* requires: