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Recommended: JavaScript SDK with React Hooks

For new React apps, we recommend the JavaScript SDK with React Hooks (@dynamic-labs-sdk/react-hooks) instead of the legacy React SDK documented here. The JS SDK comes with many benefits such as a much smaller bundle size and other optimizations. Use the React quickstart (JavaScript SDK) to get started.
import { FC, FormEventHandler, useState } from "react";

import { parseEther } from "viem";

import { useDynamicContext } from "@dynamic-labs/sdk-react-core";
import { isEthereumWallet } from "@dynamic-labs/ethereum";

export const SendTransactionSection: FC = () => {
  const { primaryWallet } = useDynamicContext();

  const [txnHash, setTxnHash] = useState("");

  if (!primaryWallet || !isEthereumWallet(primaryWallet)) return null;

  const onSubmit: FormEventHandler<HTMLFormElement> = async (event) => {
    event.preventDefault();

    const formData = new FormData(event.currentTarget);

    const address = formData.get("address") as string;
    const amount = formData.get("amount") as string;

    const publicClient = await primaryWallet.getPublicClient();
    const walletClient = await primaryWallet.getWalletClient();

    const transaction = {
      to: address,
      value: amount ? parseEther(amount) : undefined,
    };

    const hash = await walletClient.sendTransaction(transaction);
    setTxnHash(hash);

    const receipt = await publicClient.getTransactionReceipt({
      hash,
    });

    console.log(receipt);
  };

  return (
    <form onSubmit={onSubmit}>
      <p>Send to ETH address</p>
      <input name="address" type="text" required placeholder="Address" />
      <input name="amount" type="text" required placeholder="0.05" />
      <button type="submit">Send</button>
      <span data-testid="transaction-section-result-hash">{txnHash}</span>
    </form>
  );
};

​
Simulate a Transaction

Before sending a transaction, you can simulate it to preview the effects and validate that it will succeed. Transaction simulation shows all asset transfers involved in the transaction.
Transaction simulation uses the currently selected primary wallet. Make sure the user has a wallet connected before attempting to simulate a transaction.
Last modified on June 25, 2026