Yes, the protocol specification is free and open source (Apache 2.0). Standard payment processing fees apply when using Stripe for payments.

Do merchants keep their customer relationships with ACP?

Yes, merchants remain the merchant of record and keep full control over customer relationships, including customer data, emails, and support.

How are payments secured in ACP?

ACP uses Shared Payment Tokens (SPTs) that are merchant-specific, amount-limited, time-limited, and single-use. The AI agent never sees actual payment credentials.

Which AI assistants support ACP?

ChatGPT supports ACP via its Instant Checkout feature. As an open standard, any AI platform can implement ACP support.

About

The Agentic Commerce Protocol

The Agentic Commerce Protocol (ACP) is an open standard that enables AI agents to complete commercial transactions on behalf of users. Co-developed by OpenAI and Stripe, ACP creates a secure, standardized way for AI assistants to help users shop, compare products, and complete purchases through natural conversation.

Our Mission

This documentation site exists to:

Educate developers and merchants about agentic commerce
Provide comprehensive implementation guides and tutorials
Foster a community around the open standard
Accelerate adoption of AI-powered shopping experiences

The Protocol Creators

OpenAI

OpenAI developed the AI agent capabilities that power conversational commerce. Through ChatGPT’s Instant Checkout feature, users can discover products, compare options, and complete purchases entirely through natural language.

Visit OpenAI →

Stripe

Stripe provides the payment infrastructure that makes secure, delegated payments possible. Their Shared Payment Token technology enables AI agents to process transactions without ever accessing actual payment credentials.

Visit Stripe →

This Documentation

This site is:

Open Source: Licensed under Apache 2.0
Community-Driven: Contributions are welcome
Comprehensive: Covering concepts, tutorials, and API references
Practical: Real-world examples and implementation guides

Contributing

We welcome contributions from the community! You can help by:

Improving documentation: Fix typos, clarify explanations, add examples
Reporting issues: Found a bug or have a suggestion? Open an issue
Sharing knowledge: Write tutorials, create examples, answer questions

Visit our GitHub repository to get started.

Connect With Us

Acknowledgments

This documentation site was built with:

Next.js - React framework
Nextra - Documentation framework
Vercel - Hosting platform

Special thanks to the growing community of developers and merchants exploring the future of AI-powered commerce.

Building the future of shopping, one conversation at a time.