Quicknode: Blockchain Data Access for Agents

Quicknode provides high-performance RPC endpoints across 77+ blockchain networks including all chains Bankr supports: Base, Ethereum, Polygon, Solana, and Unichain.

Two ways to access:

• API key: Create a Quicknode account, get an endpoint URL with auth baked in. Full access to all products and settings.
• x402 (no account needed): Any wallet with USDC can authenticate and pay per request. Install @quicknode/x402 and start querying immediately.

x402 Access (Recommended for Agents)

x402 is ideal for autonomous agents. No signup, no API keys. Pay with USDC on Base, Polygon, or Solana.

import { createQuicknodeX402Client } from "@quicknode/x402";

const client = await createQuicknodeX402Client({
  baseUrl: 'https://x402.quicknode.com',
  network: "eip155:84532",   // pay on Base Sepolia (testnet)