Blockchain RPC and data access via Quicknode. Use when an agent needs to read onchain data (balances, token prices, transaction status, gas estimates, block data) across Base, Ethereum, Polygon, Solana, or Unichain. Supports both API key access and x402 wallet-based pay-per-request access with no account needed. Triggers on mentions of RPC, blockchain data, onchain queries, token balances, gas estimation, block number, transaction receipt, Quicknode, or x402.
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:
@quicknode/x402 and start querying immediately.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)
evmPrivateKey: process.env.PRIVATE_KEY,
preAuth: true, // pre-authenticates via SIWX for faster payment flow
});
// Pay on Base, query any chain
const res = await client.fetch("https://x402.quicknode.com/ethereum-mainnet", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ jsonrpc: "2.0", method: "eth_blockNumber", params: [], id: 1 }),
});
Install: npm install @quicknode/x402
Credit pricing:
Full x402 docs: https://x402.quicknode.com/llms.txt
Quicknode endpoints include authentication in the URL: