> ## Documentation Index
> Fetch the complete documentation index at: https://docs.paypal.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

Agent Ready helps Braintree merchants accept payments from AI shopping assistants across major platforms, including ChatGPT, Google AI Mode, and Gemini, without building separate integrations for each.

PayPal supports two agentic commerce protocols:

| Protocol                          | AI platform            | Integration path                             |
| --------------------------------- | ---------------------- | -------------------------------------------- |
| Agentic Commerce Protocol (ACP)   | ChatGPT, OpenAI        | Delegated payment tokens through Braintree   |
| Universal Commerce Protocol (UCP) | Google AI Mode, Gemini | Google Pay payment handler through Braintree |

## How it works

When a customer shops through an AI assistant, the assistant handles product discovery and checkout orchestration. Agent Ready connects your Braintree integration to these AI surfaces so you can:

* Accept payments initiated by AI agents on behalf of customers.
* Leverage your existing Braintree merchant account and processing relationship.

## Choose your integration

<Columns>
  <Card title="Agentic Commerce Protocol integration" href="/growth/agentic-commerce/agent-ready/agentic-commerce-protocol-integration">
    Enable instant checkout in ChatGPT Apps using delegated payment tokens through Braintree.
  </Card>

  <Card title="Universal Commerce Protocol integration" href="/growth/agentic-commerce/agent-ready/universal-commerce-protocol-integration">
    Enable the Buy button in Google AI Mode and Gemini using the Google Pay payment handler through Braintree.
  </Card>
</Columns>

The key difference between these integrations is the AI platform they support and how payment credentials are obtained and processed.

|                    | Agentic Commerce Protocol integration                                                                                              | Universal Commerce Protocol integration                                                                                   |
| ------------------ | ---------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------- |
| **Best for**       | Merchants building ChatGPT Apps or enabling their products for discovery in ChatGPT shopping.                                      | Braintree merchants with an existing Google Pay integration who want to be discoverable in Google's AI shopping surfaces. |
| **How it works**   | Customers authorize PayPal as their payment method. Your app receives a delegated token to process transactions through Braintree. | Customers pay using their Google Wallet. Google returns a single-use payment token that you process through Braintree.    |
| **AI platform**    | ChatGPT, OpenAI                                                                                                                    | Google AI Mode, Gemini                                                                                                    |
| **Payment method** | Delegated payment tokens through Braintree.                                                                                        | Google Pay payment handler through Braintree.                                                                             |