Changelog
All notable changes to the Agentic Commerce Protocol specification.
📋
ACP follows Semantic Versioning . The current version is 1.0.0.
[1.0.0] - 2024-12-12
Official Release
The Agentic Commerce Protocol is now publicly available and live in ChatGPT.
Highlights:
- Open source release under Apache 2.0 license
- Production deployment with Etsy and Shopify merchants
- Complete specification documentation
Added
- Product Feed Specification - JSON format for product discovery
- Agentic Checkout API - RESTful checkout session management
- Delegated Payment Specification - Shared Payment Token (SPT) handling
- Webhook Events - Order and payment notifications
- Signature Verification - HMAC-SHA256 request authentication
Integrations
- Stripe Agent Toolkit support
- Shopify native integration
- Etsy marketplace integration
[0.9.0] - 2024-11-01
Beta Release
Private beta with select merchants.
Added
- Initial checkout session API
- Basic product feed format
- Stripe SPT integration
Changed
- Simplified cart item schema
- Improved error response format
[0.8.0] - 2024-09-15
Alpha Release
Internal testing phase.
Added
- Core checkout flow
- Payment token handling
- Session state management
Upcoming
Planned Features
- Multi-currency support - International pricing
- Subscription handling - Recurring payment flows
- Digital delivery - Download and access management
- Order modifications - Post-purchase changes
- Returns/refunds - Automated return processing
Under Consideration
- GraphQL API option
- Real-time inventory webhooks
- AI-specific product metadata
- Agent reputation system
Migration Guides
From Beta to 1.0
No breaking changes. Beta implementations are fully compatible.
API Deprecations
None currently scheduled.
Contributing
The ACP specification is open source. Contribute at:
Proposing Changes
- Open a GitHub issue describing the change
- Discuss with community and maintainers
- Submit pull request with specification updates
- Changes reviewed by OpenAI and Stripe teams