Google’s AP2 Protocol Gives AI Agents a Wallet, and Crypto Might Be Its Native Currency

Google’s AP2 Protocol introduced a universal framework where AI agents can initiate payments the same way humans do.

The system supports credit cards, bank transfers, and crypto rails for stablecoin payments, letting AI assistants spend with explicit authorization from users.

To build this, Google teamed up with over 60 major partners. Prominent names include Coinbase, Mastercard, PayPal, MetaMask, Polygon, Adobe, Revolut, Shopify, Intuit, and more. The goal is to make AI-driven commerce safe, auditable, and interoperable across banks and blockchains.

Why is a New Protocol Needed?

As AI agents start doing more real-world tasks like buying products, booking travel, or managing budgets, there’s a growing need to ensure those agents act with proper permission and that merchants can trust their actions.

Most payment systems today assume a human clicks “buy”. But in the near future, AI assistant could make purchases on one’s behalf. That raises key questions:

• Did you actually approve the purchase?
• Did the AI follow your instructions?
• Who is responsible if something goes wrong?

AP2 answers all of these, creating a shared, secure way for agents to handle payments, no matter what payment method is used.

Related: Cloudflare Joins Google, Coinbase in Push for AI-Ready Payments Stablecoin

How it works: Mandates and Verifiable Credentials

The protocol uses “Mandates,” tamper-proof digital contracts that prove the user’s intent. For example:

• If you say, “Buy me shoes under $100,” the AI agent generates an Intent Mandate.
• Once it finds a pair and shows you the cart, your approval creates a Cart Mandate.

These steps, along with Verifiable Credentials, make it easy to track who approved what, ensuring that every transaction is authorized, auditable, and secure.

This also works when the user isn’t present. If you tell an agent to “Buy Taylor Swift tickets when they go on sale,” it can follow that instruction, as long as it sticks to the rules in the mandate.

Crypto-Ready: Support for Stablecoins and Web3

Google has built AP2 with crypto in mind. In partnership with Coinbase, MetaMask, the Ethereum Foundation, and Polygon, they’ve launched an extension called A2A x402, which allows agents to make payments using stablecoins and blockchain networks.

This means that in the future, AI agents could send crypto, pay gas fees, or complete smart contract transactions on one’s behalf while still following strict rules for security and verification.

Who’s involved?

The list of launch partners is huge. Some notable names include:

• Crypto & Web3: Coinbase, MetaMask, Polygon, Ethereum Foundation, Crossmint, Mesh, Mysten Labs
• Traditional Payments: Mastercard, American Express, JCB, PayPal, Worldpay, Adyen
• Tech & E-commerce: Adobe, Salesforce, Shopify, Dell, ServiceNow, Revolut
• Security & Identity: Okta/Auth0, 1Password, Forter, Gravitee
• Consulting: Accenture, PwC, Deloitte

Many of these companies plan to integrate AP2 into their products or build new agent-based services on top of it.

Agentic Commerce and Web3 Interoperability

Google sees AP2 as a foundation for a new era of commerce, where AI agents can safely manage purchases, budgets, and financial workflows. This could range from buying everyday items to automating enterprise procurement.

Developers and businesses can already explore the open-source specs and code on GitHub, and many partners are working on real-world use cases.