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The signMessage method is a low-level API that signs raw bytes directly without any modifications. This is useful for verifying your Para integration with a simple “Hello, Para!” test after initial setup and authentication.
Important: signMessage signs raw bytes without standard modifications like EIP-191 message prefixes that libraries like Ethers and Viem automatically add. For production use, always use proper Web3 libraries that handle message formatting, encoding standards, and chain-specific requirements.

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Message Signing

This method signs the exact bytes you provide - perfect for initial “hello world” testing:
SignMessageExample.tsx
import { useSignMessage, useWallet } from '@getpara/react-sdk';

export default function SignMessageExample() {
  const { mutateAsync: signMessageAsync } = useSignMessage();
  const { data: wallet } = useWallet();

  const handleSign = async () => {
    if (!wallet) return;

    const message = "Hello, Para!";
    // Encode message to base64
    const messageBase64 = btoa(message);
    
    const result = await signMessageAsync({
      walletId: wallet.id,
      messageBase64
    });
    
    console.log('Signature result:', result);
  };

  return (
    <button onClick={handleSign}>Sign Message</button>
  );
}
When to use signMessage: This method is best suited for signing simple text messages and basic authentication flows. For complex operations like transactions, typed data (EIP-712), or chain-specific functionality, you should use the appropriate Web3 library (Viem, Ethers, Solana Web3.js, CosmJS) as shown in the Next Steps below. These libraries provide proper encoding, type safety, and chain-specific features that signMessage alone cannot offer.

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Next Steps

Now that you’ve successfully verified your Para setup with a simple message signature, it’s time to move on to more advanced operations. Depending on your target blockchain, you can explore the following libraries that integrate seamlessly with Para for signing transactions, typed data, and more:
EVM Libraries

EVM Libraries

Solana Libraries

Solana Libraries

Cosmos Libraries

Cosmos Libraries