The Solana Foundation and Google Cloud have jointly launched Pay.sh, a stablecoin-powered payment gateway designed specifically for AI agents. The platform allows autonomous software agents to discover, access, and pay for API services on a per-request basis, using stablecoins on the Solana network, without the need for traditional accounts, API keys, or subscription plans.
The launch marks a notable convergence of two of the most talked-about trends in technology right now: artificial intelligence and crypto payment infrastructure. Rather than locking developers or AI systems into monthly billing cycles, Pay.sh enables payments as small as fractions of a cent per individual API call, making it practical for AI agents to consume only what they need, precisely when they need it.
How Pay.sh works
At its core, Pay.sh operates as an API proxy hosted on Google Cloud, with a Solana wallet functioning as both the payment layer and the identity layer for each agent. Through this setup, AI agents can interact with a wide range of Google Cloud services including Gemini, BigQuery, and Vertex AI, alongside more than 50 additional community API providers spanning blockchain data, developer tools, cloud infrastructure, and AI services.
The platform is built on x402, an open payment protocol originally developed at Coinbase and subsequently brought under the governance of the Linux Foundation. The protocol works by using the HTTP 402 “Payment Required” status code to enable applications and AI agents to pay directly through web requests, without the need for separate billing systems. The standard has already attracted backing from major technology and payments companies including Google, Stripe, AWS, Visa, and Mastercard.
Pay.sh also supports the Machine Payments Protocol, a framework developed by Tempo and Stripe for machine-to-machine transactions, giving the platform a second route for AI commerce as the space matures.
A growing race for AI payment rails
The Pay.sh launch places Solana squarely in a rapidly expanding competition to build the financial infrastructure that will underpin AI agent activity on the internet.
Coinbase has been an early mover in this space, having launched Agentic.market, a marketplace where AI agents can find and purchase services using USDC through the same x402 protocol. According to reports, x402 has already settled approximately 165 million transactions across more than 480,000 transacting agents, the majority of which occurred on Base, Coinbase’s Ethereum layer-2 network.
Google, meanwhile, has developed its own Agent Payments Protocol (AP2), a crypto-enabled payment extension built in collaboration with Coinbase, the Ethereum Foundation, and MetaMask. That system uses signed payment instructions to verify user consent when AI agents initiate transactions, an approach that Pay.sh echoes in its own architecture.
MoonPay has also entered the field, introducing MoonAgents Card, a virtual Mastercard product that enables AI-linked stablecoin spending directly from on-chain wallets.
Why Solana
Solana’s low transaction fees and fast settlement times make it a natural fit for the micro-payment model that AI agent commerce demands. When an AI system might execute thousands of small API calls in a short window, network costs and speed become critical factors, and Solana’s architecture is well suited to both.
With Pay.sh now live, the race to define how AI agents transact on the internet is well underway. Whether the winning infrastructure ends up being built on Solana, Base, or a combination of networks remains an open question, but the direction of travel is clear. Stablecoins are becoming the payment layer for the AI-native web.
