> For the complete documentation index, see [llms.txt](/llms.txt).

# Request signature

The `request` method facilitates the use of templated transaction screens for signing transactions. This function returns a promise of the signature that can be used to broadcast the transaction.

Please check the list of [JSON RPC methods](https://metamask-docs-f8nytczy3-consensys-ddffed67.vercel.app/wallet/reference/json-rpc-api/), noting that the request method currently supports only the signing methods.

## Method[​](#method "Direct link to Method")

`request(chainConfig: ChainConfig, method: string, params: unknown[], path?: string): Promise<string>;`

## Parameters[​](#parameters "Direct link to Parameters")

| Arguments     | Description                                                                                                                                                                                            |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| chainConfig   | Defines the chain to be used for signature.                                                                                                                                                            |
| method        | JSON RPC method name in string. Currently, the request method only supports the singing methods.                                                                                                       |
| requestParams | Parameters for the corresponding method. The parameters should be in the list and correct sequence. Take a look at [RPC methods](https://metamask-docs-f8nytczy3-consensys-ddffed67.vercel.app/wallet/reference/json-rpc-api) to know more. |

## Examples[​](#examples "Direct link to Examples")

### Personal sign[​](#personal-sign "Direct link to Personal sign")

```
const params = [
  {
    challenge: 'Hello World',
    address,
  },
  null,
]
const res = await web3auth.request(chainConfig, 'personal_sign', params)

```

### Personal sign shorthand[​](#personal-sign-shorthand "Direct link to Personal sign shorthand")

```
const params = ['Hello World', address]
const res = await web3auth.request(chainConfig, 'personal_sign', params)

```

### Sign type 4[​](#sign-type-4 "Direct link to Sign type 4")

```
const params = [
  address,
  {
    types: {
      EIP712Domain: [
        {
          name: 'name',
          type: 'string',
        },
        {
          name: 'version',
          type: 'string',
        },
        {
          name: 'chainId',
          type: 'uint256',
        },
        {
          name: 'verifyingContract',
          type: 'address',
        },
      ],
      Person: [
        {
          name: 'name',
          type: 'string',
        },
        {
          name: 'wallet',
          type: 'address',
        },
      ],
      Mail: [
        {
          name: 'from',
          type: 'Person',
        },
        {
          name: 'to',
          type: 'Person',
        },
        {
          name: 'contents',
          type: 'string',
        },
      ],
    },
    primaryType: 'Mail',
    domain: {
      name: 'Ether Mail',
      version: '1',
      chainId: 4,
      verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
    },
    message: {
      from: {
        name: 'Cow',
        wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
      },
      to: {
        name: 'Bob',
        wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
      },
      contents: 'Hello, Bob!',
    },
  },
]
const res = await web3auth.request(chainConfig, 'eth_signTypedData_v4', params)

```