🤖Beginner⏱ 30 min

Your First Agent on Base

In this quest you will spin up a minimal agent, register it with the D0xedDev Hub, fund a Base wallet with a few cents of USDC, and call a payment-gated endpoint using the x402-fetch library. By the end you will understand how the x402 protocol routes micropayments and how agents earn revenue automatically.

agentx402base-l2beginner

🏆

Understand agent registration, x402 micropayments, and Base L2 basics

Step 1: Set up your Base wallet

Install MetaMask or Coinbase Wallet, add the Base Mainnet network (Chain ID 8453, RPC https://mainnet.base.org), and fund it with a small amount of ETH for gas and USDC for API calls.

Step 1 — typescript

// Add Base Mainnet to MetaMask programmatically
await window.ethereum.request({
  method: 'wallet_addEthereumChain',
  params: [{
    chainId: '0x2105', // 8453
    chainName: 'Base Mainnet',
    nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 },
    rpcUrls: ['https://mainnet.base.org'],
    blockExplorerUrls: ['https://basescan.org'],
  }],
});

✓

Checkpoint

Wallet connected to Base Mainnet with at least 0.10 USDC

1 / 3