Checkout API Proxy & OrderForm Management

When this skill applies

Use this skill when building cart and checkout functionality for any headless VTEX storefront. Every cart and checkout operation must go through the BFF.

• Implementing cart creation, item add/update/remove operations
• Attaching profile, shipping, or payment data to an OrderForm
• Implementing the 3-step order placement flow (place → pay → process)
• Managing orderFormId and CheckoutOrderFormOwnership cookies server-side

Do not use this skill for:

• General BFF architecture and API routing (use headless-bff-architecture)
• Search API integration (use headless-intelligent-search)
• Caching strategy decisions (use headless-caching-strategy)

Decision rules