Google Collaborates with Coinbase and Ethereum for Open-Source AI Payment Application Protocol 

In collaboration with Coinbase, Ethereum Foundation, and over 60 additional companies, Google has introduced an open-source protocol enabling artificial intelligence applications to send and receive payments, including stablecoin. The initiative is a major step towards the integration of cryptocurrency and AI-based apps.

Google Unveils AI Payments Protocol 

Google has launched a new AI payment protocol called Agent Payments Protocol (AP2) to connect AI with digital assets. The AI payment protocol introduced by Google comes with a standard framework through which AI agents will easily and securely make payments on various platforms and currencies.

AP2 expands on older Google protocols, Agent2Agent and Model Context Protocols, by launching with support for cryptocurrencies and stablecoins pegged to the U.S. Dollar. To integrate stablecoin rails, Google joined forces with the crypto exchange Coinbase, based in the U.S., which has been building its own AI-based payments system.

Consultation on the technical aspects of the protocol was offered by the Ethereum Foundation. Their participation in the development of AP2 was to make sure the protocol is compatible with the existing blockchain infrastructure and standards.

The protocol guarantees the security and interoperability of payment across systems. It seeks to carry out the transactions with the intent of a human but without human input. It is the first initiative to link AI agents to decentralized finance protocols.

Stablecoins Could Lead the Adoption of AI Payments

The most significant AI agent use case could be stablecoins. Top experts have projected that they will be the most significant application of AI agents as the technologies become more widespread. The GENIUS Act has been a regulatory boost to these dollar-pegged tokens in the United States.

The Ethereum Foundation has mentioned a possible protocol upgrade that will help AI agents to process stablecoin transactions automatically within the Ethereum network. They are of the opinion that autonomous agents may emerge as the largest power consumers of Ethereum.

Data from DeFiLlama shows that more than $290 billion worth of stablecoins are in circulation. As of September 2025, this figure was around $170 billion, highlighting how quickly the stablecoin market has been growing recently.

Google is Pushing for Greater Digital Asset Integration

In addition to the launch of AP2, Google explained that it is working to accelerate support for the crypto and web3 ecosystem. Google noted that it worked with Coinbase, Ethereum Foundation, MetaMask, and other leading crypto organizations to launch the A2A x402 extension.

The x402 extension is a working solution to agent-based crypto payments that will define the future of cryptocurrency integrations into the main AP2 protocol. The x402 extension enables programmable and agent-led transactions by enabling crypto rails to be used in AP2.

What This Launch Means for the Crypto Market

The integration of support for stablecoins, Ethereum, and programmable tokens into a unified framework makes Google a bridge between the existing payments infrastructure and new digital assets. This action may further encourage the acceptance of AI-driven commerce and give merchants and consumers a secure and uniform system to trade both in fiat and cryptocurrency.