headless-bff-architecture
BFF Layer Design & Security
When this skill applies
Use this skill when building or modifying any headless VTEX storefront that communicates with VTEX APIs — whether a custom storefront, mobile app, or kiosk.
- Setting up a BFF (Backend-for-Frontend) layer for a new headless project
- Deciding which VTEX APIs need server-side proxying vs direct frontend calls
- Implementing credential management (
VTEX_APP_KEY,VTEX_APP_TOKEN,VtexIdclientAutCookie) - Reviewing a headless architecture for security compliance
Do not use this skill for:
- Checkout-specific proxy logic and OrderForm management (use
headless-checkout-proxy) - Search API integration details (use
headless-intelligent-search) - Caching and TTL strategy (use
headless-caching-strategy)
Decision rules
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101vtex-io-masterdata
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86vtex-io-service-apps
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83payment-pci-security
Apply when handling credit card data, implementing secureProxyUrl flows, or working with payment security and proxy code. Covers PCI DSS compliance, Secure Proxy card tokenization, sensitive data handling rules, X-PROVIDER-Forward-To header usage, custom token creation, and the constraint that Secure Proxy applies only to card authorization (not post-auth operations like cancel, capture, or refund). Use for any payment connector that processes credit, debit, or co-branded card payments to prevent data breaches and PCI violations.
76vtex-io-app-structure
Apply when creating or modifying manifest.json, service.json, or node/package.json in a VTEX IO app. Covers builders (node, react, graphql, admin, pixel, messages, store), policy declarations, dependencies, peerDependencies, and app lifecycle management. Use for scaffolding new VTEX IO apps, configuring builders, or fixing deployment failures related to app structure and naming conventions.
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