x402 AI Payment Standard from Coinbase Debuts Marketplace for Autonomous Agents
The x402 AI payment standard from Coinbase has introduced Agentic.market, a dedicated marketplace enabling AI agents to find and access services designed for artificial intelligence.
The x402 artificial intelligence payments standard, which has backing from Coinbase, has unveiled a new marketplace designed for applications and services aimed at enhancing the functionality of AI agents.
In a video shared on the social media platform X this Monday, Coinbase's product lead Nick Prince explained that the concept driving the platform, known as Agentic.market, was to "give humans and their agents access to thousands of services, with zero API keys required."
Through an additional post, Prince described the marketplace as a "storefront for discovering, comparing, and using x402 services" while providing access to numerous applications and websites compatible with AI agents, including platforms like CoinGecko, Google Flights and the X social media platform.
Prince noted that while hundreds of thousands of AI agents have processed transactions totaling hundreds of millions in volume, users of AI agents have "relied on fragmented sources and word-of-mouth" when searching for services that are compatible.
Coinbase introduced the x402 protocol in May 2025, enabling AI agents to conduct internet-based payments through stablecoins, and the protocol has experienced increasing adoption as numerous organizations anticipate that AI technology will play a larger role in commercial activities.
Introducing Agentic(dot)Market, the homepage of the agent economy.
- Monitor agentic commerce trends
- Discover services for your agent to buy
- Sell your services to agentsThousands of services. Zero API keys. Powered by x402.
— nick.base.eth 🛡 (@Nick_Prince12) April 20, 2026
According to Prince, the marketplace features a web interface "for humans to browse and evaluate services" alongside a programming layer that provides AI agents with platform access, enabling them to "search, filter, and integrate new capabilities autonomously at runtime without a human in the loop."
The platform equips an AI agent with "skills," which is code containing instructions on service usage, as well as a wallet granting it the capability to "buy services and also sell services," Prince further explained.
Drawing its name from the infrequently utilized HTTP status code "402 Payment Required," the x402 protocol gained backing earlier this month from technology giants Google, Microsoft and Amazon Web Services, all of which supported establishing the x402 Foundation for protocol governance.
Major financial and technology companies including American Express, Mastercard, Visa, Cloudflare, Shopify, Stripe, Circle, Base, Polygon Labs, the Solana Foundation, Thirdweb and KakaoPay also conveyed their "initial intent and support" for the foundation.
At that time, Coinbase CEO Brian Armstrong stated that "there will be more AI agents transacting online than humans very soon," a sentiment that mirrors Circle CEO Jeremy Allaire's January prediction that "literally billions of AI agents" will be conducting transactions on blockchains within a three to five year timeframe.