ACP Discount Extension

Before writing code

Fetch live docs:

1. Web-search site:github.com agentic-commerce-protocol rfcs discount_extension for the discount extension RFC
2. Web-search site:github.com agentic-commerce-protocol examples discount-extension for discount examples
3. Fetch https://developers.openai.com/commerce/specs/checkout/ for how discounts interact with checkout
4. Web-search site:github.com agentic-commerce-protocol spec json-schema discount for the discount JSON schema

Conceptual Architecture

What the Discount Extension Does

The discount extension adds coupon/promo code support to ACP checkout sessions. It's a built-in extension that follows the extensions framework with independent versioning.

Extension Identity