Cardano ADA Jumps 4% as x402 AI Payments Go Live

Cardano's ADA price climbed roughly 4% in 24 hours, reaching its highest level in four months, after the blockchain integrated with the x402 payment standard for AI agents. x402, an open HTTP protocol originally developed by Coinbase in 2025, now operates under Linux Foundation governance, reviving the HTTP 402 status code for automated blockchain payments.