ERC-1155 balance

How many of one ERC-1155 token id an account holds, read straight from the contract. ERC-1155 is the multi-token standard behind most game items, editions and passes, where a single contract holds many ids and a balance is a quantity rather than ownership of one thing. Returns the balance as a decimal string. EVM chains: ethereum, base, polygon, arbitrum, optimism.

TRY IN PLAYGROUND →

Input

Example output

{
  "contract": "0x2953399124f0cbb46d2cbacd8a89cf0599974963",
  "address": "0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0",
  "tokenId": "1",
  "network": "polygon",
  "balance": "0"
}

Try it - see the 402 challenge (free)

curl -i "https://agent402.tools/api/chain/erc1155-balance?contract=0x2953399124F0cBB46d2CbACD8A89cF0599974963&address=0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0&tokenId=1&network=polygon"

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";
import { metaTitle, metaDescription } from "./seo-meta.js";

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

const res = await payFetch("https://agent402.tools/api/chain/erc1155-balance?contract=0x2953399124F0cBB46d2CbACD8A89cF0599974963&address=0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0&tokenId=1&network=polygon");

Related tools