ABI Data — grab your smart contract’s ABI as JSON from Etherscan


Fetch smart contract ABI JSON from Etherscan to use with wagmi and ethers.js in your app. Records are cached for 365 days, so after the initial request for a contract, the API will respond very quickly from the CDN. This is just a simple wrapper around Etherscan’s

React usage example

import { useState, useEffect } from "react";
import { useContractWrite, usePrepareContractWrite } from "wagmi";

const contractAddress = "0xecb504d39723b0be0e3a9aa33d646642d1051ee1";

const useContractABI = (contractAddress) => {
  const [contractABI, setContractABI] = useState(null);

  useEffect(() => {
    const fetchContractABI = async () => {
      const response = await fetch(`https://abidata.net/${contractAddress}`);
      const json = await response.json();

  }, [contractAddress]);

  return contractABI;

function App() {
  const contractABI = useContractABI(contractAddress);
  const { config } = usePrepareContractWrite({
    address: contractAddress,
    abi: contractABI,
    functionName: "feed",

  const { data, isLoading, isSuccess, write } = useContractWrite(config);

  return (
      <button disabled={!write} onClick={() => write?.()}>
      {isLoading && <div>Check Wallet</div>}
      {isSuccess && <div>Transaction: {JSON.stringify(data)}</div>}


This is a Next.js app. First, run the development server:

npm run dev
# or
yarn dev
# or
pnpm dev

Open http://localhost:3000 with your browser to see the result.


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