Wallet token balances (indexed)

All ERC-20 + native token balances for any EVM address in one call, from Coinbase's indexed data API — no per-token contract calls, no RPC wrangling. Networks: base, ethereum, base-sepolia. Symbols/decimals populated for whitelisted tokens (USDC always included).

Input

Example output

{
  "address": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
  "network": "base",
  "balances": [
    {
      "symbol": "USDC",
      "name": "USD Coin",
      "contract": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
      "amount": "8.655",
      "raw": "8655000",
      "decimals": 6
    }
  ],
  "count": 1
}

Try it — see the 402 challenge (free)

curl -i "https://agent402.tools/api/wallet-balances?address=0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0&network=base"

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/wallet-balances?address=0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0&network=base");

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