signTypedData

Signs EIP-712 typed data via Solady's ERC-1271 TypedDataSign format.

This Action is suitable to sign messages for contracts (e.g. ERC-4337 Smart Accounts) that implement (or conform to) Solady's ERC1271.sol.

With the calculated signature, you can use verifyTypedData to verify the signature

Usage

example.ts

import { account, walletClient } from './config'
import { domain, types } from './data'
 
const signature = await walletClient.signTypedData({ 
  // Account used for signing.
  account,
  domain,
  types,
  primaryType: 'Mail',
  message: {
    from: {
      name: 'Cow',
      wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
    },
    to: {
      name: 'Bob',
      wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
    },
    contents: 'Hello, Bob!',
  },
  // Verifying contract address (e.g. ERC-4337 Smart Account).
  verifier: '0xCB9fA1eA9b8A3bf422a8639f23Df77ea66020eC2'
})

Account and/or Verifier Hoisting

If you do not wish to pass an account and/or verifier to every signTypedData, you can also hoist the Account and/or Verifier on the Wallet Client (see config.ts).

Learn more.

example.ts

import { walletClient } from './config'
import { domain, types } from './data'
 
const signature = await walletClient.signTypedData({ 
  domain,
  types,
  primaryType: 'Mail',
  message: {
    from: {
      name: 'Cow',
      wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
    },
    to: {
      name: 'Bob',
      wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
    },
    contents: 'Hello, Bob!',
  },
})

Returns

Hex

The signed data.

Parameters

account

Type: Account | Address

Account to used to sign the typed data.

Accepts a JSON-RPC Account or Local Account (Private Key, etc).

import { walletClient } from './config'
 
const signature = await walletClient.signTypedData({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266', 
  domain: {
    name: 'Ether Mail',
    version: '1',
    chainId: 1,
    verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
  },
  types: {
    Person: [
      { name: 'name', type: 'string' },
      { name: 'wallet', type: 'address' },
    ],
    Mail: [
      { name: 'from', type: 'Person' },
      { name: 'to', type: 'Person' },
      { name: 'contents', type: 'string' },
    ],
  },
  primaryType: 'Mail',
  message: {
    from: {
      name: 'Cow',
      wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
    },
    to: {
      name: 'Bob',
      wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
    },
    contents: 'Hello, Bob!',
  },
  verifier: '0xCB9fA1eA9b8A3bf422a8639f23Df77ea66020eC2'
})

domain

Type: TypedDataDomain

The typed data domain.

import { walletClient } from './config'
 
const signature = await walletClient.signTypedData({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  domain: { 
    name: 'Ether Mail',
    version: '1',
    chainId: 1,
    verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
  },
  types: {
    Person: [
      { name: 'name', type: 'string' },
      { name: 'wallet', type: 'address' },
    ],
    Mail: [
      { name: 'from', type: 'Person' },
      { name: 'to', type: 'Person' },
      { name: 'contents', type: 'string' },
    ],
  },
  primaryType: 'Mail',
  message: {
    from: {
      name: 'Cow',
      wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
    },
    to: {
      name: 'Bob',
      wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
    },
    contents: 'Hello, Bob!',
  },
  verifier: '0xCB9fA1eA9b8A3bf422a8639f23Df77ea66020eC2'
})

types

The type definitions for the typed data.

import { walletClient } from './config'
 
const signature = await walletClient.signTypedData({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  domain: { 
    name: 'Ether Mail',
    version: '1',
    chainId: 1,
    verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
  },
  types: { 
    Person: [
      { name: 'name', type: 'string' },
      { name: 'wallet', type: 'address' },
    ],
    Mail: [
      { name: 'from', type: 'Person' },
      { name: 'to', type: 'Person' },
      { name: 'contents', type: 'string' },
    ],
  },
  primaryType: 'Mail',
  message: {
    from: {
      name: 'Cow',
      wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
    },
    to: {
      name: 'Bob',
      wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
    },
    contents: 'Hello, Bob!',
  },
})

primaryType

Type: Inferred string.

The primary type to extract from types and use in value.

import { walletClient } from './config'
 
const signature = await walletClient.signTypedData({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  domain: { 
    name: 'Ether Mail',
    version: '1',
    chainId: 1,
    verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
  },
  types: {
    Person: [
      { name: 'name', type: 'string' },
      { name: 'wallet', type: 'address' },
    ],
    Mail: [ 
      { name: 'from', type: 'Person' },
      { name: 'to', type: 'Person' },
      { name: 'contents', type: 'string' },
    ],
  },
  primaryType: 'Mail', 
  message: {
    from: {
      name: 'Cow',
      wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
    },
    to: {
      name: 'Bob',
      wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
    },
    contents: 'Hello, Bob!',
  },
})

message

Type: Inferred from types & primaryType.

import { walletClient } from './config'
 
const signature = await walletClient.signTypedData({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  domain: { 
    name: 'Ether Mail',
    version: '1',
    chainId: 1,
    verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
  },
  types: {
    Person: [
      { name: 'name', type: 'string' },
      { name: 'wallet', type: 'address' },
    ],
    Mail: [
      { name: 'from', type: 'Person' },
      { name: 'to', type: 'Person' },
      { name: 'contents', type: 'string' },
    ],
  },
  primaryType: 'Mail', 
  message: { 
    from: {
      name: 'Cow',
      wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
    },
    to: {
      name: 'Bob',
      wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
    },
    contents: 'Hello, Bob!',
  },
  verifier: '0xCB9fA1eA9b8A3bf422a8639f23Df77ea66020eC2'
})

verifier

Type: Address

The address of the verifying contract (e.g. a ERC-4337 Smart Account). Required if verifierDomain is not passed.

import { walletClient } from './config'
 
const signature = await walletClient.signTypedData({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  domain: { 
    name: 'Ether Mail',
    version: '1',
    chainId: 1,
    verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
  },
  types: {
    Person: [
      { name: 'name', type: 'string' },
      { name: 'wallet', type: 'address' },
    ],
    Mail: [
      { name: 'from', type: 'Person' },
      { name: 'to', type: 'Person' },
      { name: 'contents', type: 'string' },
    ],
  },
  primaryType: 'Mail', 
  message: {
    from: {
      name: 'Cow',
      wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
    },
    to: {
      name: 'Bob',
      wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
    },
    contents: 'Hello, Bob!',
  },
  verifier: '0xCB9fA1eA9b8A3bf422a8639f23Df77ea66020eC2'
})

verifierDomain

Type: TypedDataDomain

Account domain separator. Required if verifier is not passed.

import { walletClient } from './config'
 
const signature = await walletClient.signTypedData({
  account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  domain: { 
    name: 'Ether Mail',
    version: '1',
    chainId: 1,
    verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
  },
  types: {
    Person: [
      { name: 'name', type: 'string' },
      { name: 'wallet', type: 'address' },
    ],
    Mail: [
      { name: 'from', type: 'Person' },
      { name: 'to', type: 'Person' },
      { name: 'contents', type: 'string' },
    ],
  },
  primaryType: 'Mail', 
  message: {
    from: {
      name: 'Cow',
      wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
    },
    to: {
      name: 'Bob',
      wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
    },
    contents: 'Hello, Bob!',
  },
  verifierDomain: { 
    name: 'SoladyAccount', 
    version: '1', 
    chainId: 1, 
    verifyingContract: '0xCB9fA1eA9b8A3bf422a8639f23Df77ea66020eC2'
  }, 
})