eth_signTypedData_v4

Sign structured EIP-712 data with the wallet.

Signs EIP-712 typed data.

Request#

type Request = {
  method: 'eth_signTypedData_v4',
  params: [
    /** Address of the signer. */
    address: `0x${string}`,
    /** Serialized typed data to sign. */
    data: string,
  ],
}

Response#

Signature.

type Response = `0x${string}`

Example#

To make these instructions concrete, we have created a sample cross-app wallet called Rapidfire ID. To interact with it, you can find its SDK in the NPM package directory: @rapidfire/id.

You can check out the GitHub repository for Rapidfire Wallet to learn how to create your own wallet.

import RapidfireID from '@rapidfire/id'
const rapidfire = new RapidfireID()
const provider = rapidfire.getEthereumProvider()
const signature = await provider.request({
  method: 'eth_signTypedData_v4',
  params: ['0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef', '...'],
})