Acp Agentic Commerce

Implement the ACP discount extension — discount codes, applied discounts, rejected codes, and line-item allocations. Use when adding coupon/promo code support to checkout flows.

Author custom ACP extensions — composable protocol add-ons with JSONPath targeting, schema composition, and independent versioning. Use when building proprietary or domain-specific extensions beyond the built-in ones.

Implement ACP affiliate attribution — privacy-preserving affiliate tracking without cookies using token-based first-touch and last-touch attribution. Use when building affiliate programs, referral tracking, or partnership attribution.

Implement ACP capability negotiation — dynamic discovery of mutually supported capabilities, extensions, payment handlers, and interventions. Use when building multi-feature merchant servers or agents that adapt to merchant capabilities.