The x402 ecosystem, a payment standard for AI agents, has seen significant growth, with its market cap surpassing $800 million. This week, three small-cap tokens have emerged as top gainers. AInalyst (AIN), an AI-driven Web3 analytics platform, soared over 3,800%, reaching an all-time high of $0.00259. AIN's market cap is $2.6 million, bolstered by a recent Binance Wallet listing. PayAI Network (PAYAI), an open-source marketplace for AI agents, saw a 1,500% increase, with its price hitting $0.059. PAYAI's market cap is $59.1 million, and it recently gained trading support from Poloniex and Ju.com. An airdrop campaign and abnormal capital inflows have also fueled its growth. Aurra by Virtuals (AURA), offering AI agent tooling, gained 988.2%, reaching $0.0078. Its market cap stands at $7.8 million, with listings on LBank and WEEX. These gains highlight both opportunities and risks in the evolving AI-powered crypto space.