The x402 payment protocol saw a 10,780% jump in weekly transactions in October 2025 by letting AI agents pay in USDC stablecoins. It replaces API keys, subscriptions, manual setups and credit cards with a pay-per-request model, zero manual steps and near-zero fees. Major backers include Coinbase, Cloudflare, Google Cloud, PayPal Ventures and General Catalyst.

• x402 protocol transactions jumped 10,780% in one week in October 2025, hitting nearly half a million payments, as AI agents began paying autonomously in USDC on a pay-per-request basis.
• Backing from Coinbase, Cloudflare, Google Cloud, PayPal Ventures and General Catalyst signals this is infrastructure-grade, not a speculative crypto experiment.
• It eliminates API keys, subscriptions, manual setups and credit cards, enabling near-zero-fee micropayments so AI agents can instantly buy data, compute or services with no human intervention.
• Coinbase's Base, GoKite AI, Chainbase and PlayAI Network are the most closely aligned projects, with EigenLayer, Mantle, peaq, Gate and Cardano also integrating well.