🤖 Quicknode now supports x402 🤖 AI agents can hit RPC across 80+ chains. Pay with USDC. Built for agents. Here's what that means and why we built it 🧵

Right now, when an AI agent needs blockchain data, it can't get it on its own. It can't sign up. Can't manage keys. Can't swipe a credit card. x402 fixes this. It's an open payment protocol that turns any HTTP request into a payment flow. Server says "pay me", client signs a USDC micropayment, server delivers the data. Done. No accounts. Just HTTP + crypto.

x402 on Quicknode is pay-per-request infrastructure. Any client with a wallet can authenticate via SIWE, call RPC, WebSocket, REST, and gRPC endpoints across 80+ chains, and auto-pay with USDC when credits run out. The x402/fetch library handles the 402 handshake behind the scenes—your agent never stops. To support experimentation, x402 includes a testnet incentive: use @Base Sepolia USDC for up to 10,000 free requests, then seamlessly continue via mainnet USDC.

After x402, agents don't need accounts, API keys, or a human babysitting billing. They authenticate, pay, and operate. Fully autonomous. The next wave of infra consumers won't be people. It'll be millions of agents making calls every day. x402 is how that demand plugs into Quicknode without friction.

We've been building here for a while. Our team shipped the open-source x402-rails gem months ago, and @CoinGecko just launched x402-powered API endpoints using Quicknode OSS in production, before we even announced our own support. → →

Build without compromise. 🟩 🟩 🟩