The Coinbase-backed Artificial Intelligence Payment Standard x402 has launched a marketplace of apps and services to increase the usefulness of AI agents.
Coinbase product lead Nick Prince said in a video posted to X on Monday that the idea behind the platform, called Agentic.market, was to “give humans and their agents access to thousands of services without the need for an API key.”
In another post, Prince said the marketplace is a “storefront for discovering, comparing, and using x402 services,” and provides access to a variety of apps and websites that AI agents can use, including CoinGecko, Google Flights, and social media site X.
He added that while hundreds of thousands of AI agents are conducting transactions worth hundreds of millions of dollars, AI agent users “rely on fragmented sources and word of mouth” to find compatible services.
The x402 protocol, launched by Coinbase in May 2025, allows AI agents to make internet payments using stablecoins and is gaining traction as many companies believe AI technology will be more deeply involved in commerce.
Introducing Agent Economy’s homepage “Agent(dot)Market”.
– Monitor agent commerce trends
– Find services that agents can purchase
– Sell services to agentsThousands of services. API key is zero. Equipped with x402. https://t.co/dgrNV73MAJ pic.twitter.com/0QU9Bpb3kG
— nick.base.eth 🛡 (@Nick_Prince12) April 20, 2026
Prince said the marketplace will have a web interface “for humans to browse and rate services,” as well as a programming layer that allows AI agents to access the platform and “search, filter, and integrate new features autonomously at runtime without human involvement.”
The platform will provide AI agents with “skills,” or code on how to use the service, as well as a wallet where they can “buy services and sell services,” Prince added.
Related: Coinbase is testing an AI agent that appears in Slack and emails
The x402 protocol, named after the rarely used HTTP status code 402 Payment Required, received support from Google, Microsoft, and Amazon Web Services, which earlier this month helped establish the x402 Foundation to manage the protocol.
American Express, Mastercard, Visa, Cloudflare, Shopify, Stripe, Circle, Base, Polygon Labs, Solana Foundation, Thirdweb, and KakaoPay also expressed the foundation’s “original intent and support.”
Coinbase CEO Brian Armstrong said at the time that “soon there will be more AI agents transacting online than humans,” echoing Circle CEO Jeremy Allaire in January, who said there would be “literally billions of AI agents” transacting on the blockchain within three to five years.
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