Design e Frontend

Implement Spree's checkout — the Order state machine (cart → address → delivery → payment → confirm → complete), the Payment and Shipment sub-state machines, the return flow (ReturnAuthorization → CustomerReturn → Reimbursement → Refund), guest checkout, payment-step skipping for credit-covered orders, and the V3 checkout API surface. Use when building or customizing checkout flows, debugging stat

Work with BigCommerce orders — order lifecycle, statuses, line items, shipments, refunds, order metafields, and fulfillment. Use when building order management integrations or processing orders programmatically.

Upgrade a Spree application — version-to-version migration paths (v4 → v5 is a major rewrite; v5.x → v5.y are simpler), Gemfile pinning strategy, decorator brittleness across versions, deprecated gems to remove (`spree_auth_devise`, `deface`, `spree_backend`), API v2 → v3 migration via `spree_legacy_api_v2`, admin Bootstrap → Tailwind transition, the upgrade guide workflow, and rollback strategy.

Implement A2A SSE streaming — message/stream method, Server-Sent Events, TaskStatusUpdateEvent, TaskArtifactUpdateEvent, and re-subscription. Use when building real-time streaming responses in A2A agents.

Full-site migration from Oxygen Builder to Bricks (both modern, developer-oriented, near 1:1 mental model). Audits every Oxygen page, maps components to Bricks equivalents, builds a migration plan for approval, and converts pages to Bricks JSON via duplicates so the live site stays untouched. Use when user says "migrate Oxygen to Bricks", "switch from Oxygen to Bricks", or "replace Oxygen with Bri

Obtenha uma Chave API do site oficial da AI Skills https://ai-skills.ai para invocar habilidades em tempo de execução.

Implement UCP Checkout over the REST binding — create, get, update, complete, and cancel checkout sessions with proper headers, idempotency, status transitions, and error handling. Use when building REST-based UCP checkout endpoints or clients.

Work with BigCommerce multi-channel — channels, multi-storefront, channel-specific catalog, site routing, and channel management API. Use when building multi-storefront solutions or managing channel-specific content.

Optimize Shopify performance — Liquid rendering, asset optimization, CDN strategies, Core Web Vitals, Hydrogen caching, image optimization, preloading, and lazy loading. Use when improving Shopify store speed.

Avalia e pontua prompts do Claude e prompts de sistema usando um Scorecard de seis dimensões com rubricas ancoradas de 1 a 5. É acionado por frases como 'revisar meu prompt' ou 'por que meu prompt não está funcionando'.

Build Shopify checkout UI extensions — extension targets, UI primitives, Preact/Remote DOM rendering, checkout APIs, metafield access, post-purchase extensions, and thank-you page customization. Use when customizing Shopify checkout.

Work with the Saleor GraphQL API — queries, mutations, subscriptions, cursor pagination, filters, error handling, GraphQL Playground, and code generation. Use when building against the Saleor API.