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function useSignEvmTypedData(): {
  signEvmTypedData: (options: SignEvmTypedDataOptions) => Promise<SignEvmTypedDataResult>;
};
Hook that provides a wrapped function to sign EIP-712 typed data with authentication checks. This hook uses useEnforceAuthenticated to ensure the user is signed in before attempting to sign.

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Returns

{
  signEvmTypedData: (options: SignEvmTypedDataOptions) => Promise<SignEvmTypedDataResult>;
}

​
signEvmTypedData()

signEvmTypedData: (options: SignEvmTypedDataOptions) => Promise<SignEvmTypedDataResult>;

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Parameters

ParameterType
optionsSignEvmTypedDataOptions

​
Returns

Promise<SignEvmTypedDataResult>

​
Example

function SignTypedData() {
  const { signEvmTypedData } = useSignEvmTypedData();
  const { evmAddress } = useEvmAddress();

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

    try {
      const result = await signEvmTypedData({
        evmAccount: evmAddress,
        typedData: {
          domain: {
            name: "USDC",
            version: "2",
            chainId: 84532,
            verifyingContract: "0x036CbD53842c5426634e7929541eC2318f3dCF7e"
          },
          types: {
            EIP712Domain: [
              { name: "name", type: "string" },
              { name: "version", type: "string" },
              { name: "chainId", type: "uint256" },
              { name: "verifyingContract", type: "address" }
            ],
            TransferWithAuthorization: [
              { name: "from", type: "address" },
              { name: "to", type: "address" },
              { name: "value", type: "uint256" },
              { name: "validAfter", type: "uint256" },
              { name: "validBefore", type: "uint256" },
              { name: "nonce", type: "bytes32" }
            ]
          },
          primaryType: "TransferWithAuthorization",
          message: {
            from: evmAddress,
            to: "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB",
            value: "1000000", // 1 USDC
            validAfter: 0,
            validBefore: 2524604400,
            nonce: 0
          }
        }
      });
      console.log("Signature:", result.signature);
    } catch (error) {
      console.error("Failed to sign typed data:", error);
    }
  };

  return (
    <button onClick={handleSign}>Sign Typed Data</button>
  );
}