The x402 protocol, incubated by Coinbase, announced the launch of its unified platform, Agent.market, positioned as an "AI agent application store" to centrally showcase and integrate various tools and services based on the protocol. At launch, Agent.market covered seven categories: inference, data, media, search, social, infrastructure, and trading, integrating with numerous service providers including OpenAI, Bloomberg, CoinGecko, LinkedIn, X, and AWS Lambda, and supporting permissionless integration. Erik Reppel, Engineering Lead of Coinbase Developer Platform, stated that the platform is essentially an "application store for agents." Currently, there are approximately 69,000 active agents on the x402 network, with over 165 million transactions completed, totaling $50 million in transaction volume. Most services on Agent.market operate on a pay-per-use model, with some charging an "agentic premium" for AI agents; however, costs can be reduced through subscriptions for high-frequency use. Meanwhile, the x402-based "proxy economy" is reducing customer acquisition and integration costs for businesses, unlocking potential demand previously limited by API keys, subscriptions, and micropayment mechanisms. The x402 protocol, named with the HTTP 402 "Payment Required" status code, supports instant micropayments via blockchain and traditional payment channels for websites, APIs, and AI proxies. This protocol is governed by the x402 Foundation, a subsidiary of the Linux Foundation, in an open standard format, and is supported by over 20 technology and cryptography organizations, including Cloudflare, Stripe, Amazon Web Services, Google, and Visa. (The Block)