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# Authorization.fromTuple

:::info
`Authorization.fromTuple` is a re-export of ox's [`Authorization.fromTuple`](https://oxlib.sh/api/Authorization/fromTuple). Refer to the ox documentation for the full reference.
:::

Converts an [`Authorization.Tuple`](/docs/utilities/authorization/types#tuple) to an [`Authorization.Authorization`](/docs/utilities/authorization/types#authorization).

## Imports

```ts
import { Authorization } from 'viem/utils'
```

## Examples

```ts twoslash
// @noErrors
import { Authorization } from 'viem/utils'

const authorization = Authorization.fromTuple([
  '0x1',
  '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
  '0x3'
])
// @log: {
// @log:   address: '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
// @log:   chainId: 1,
// @log:   nonce: 3n
// @log: }
```

It is also possible to append a Signature tuple to the end of an Authorization tuple.

```ts twoslash
// @noErrors
import { Authorization } from 'viem/utils'

const authorization = Authorization.fromTuple([
  '0x1',
  '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
  '0x3',
  '0x1',
  '0x68a020a209d3d56c46f38cc50a33f704f4a9a10a59377f8dd762ac66910e9b90',
  '0x7e865ad05c4035ab5792787d4a0297a43617ae897930a6fe4d822b8faea52064'
])
// @log: {
// @log:   address: '0xbe95c3f554e9fc85ec51be69a3d807a0d55bcf2c',
// @log:   chainId: 1,
// @log:   nonce: 3n
// @log:   r: '0x68a020a209d3d56c46f38cc50a33f704f4a9a10a59377f8dd762ac66910e9b90',
// @log:   s: '0x7e865ad05c4035ab5792787d4a0297a43617ae897930a6fe4d822b8faea52064',
// @log:   yParity: 0,
// @log: }
```

## Definition

```ts
function fromTuple<tuple>(
  tuple: tuple,
): fromTuple.ReturnType<tuple>
```

## Parameters

### tuple

* **Type:** `tuple`

The [EIP-7702](https://eips.ethereum.org/EIPS/eip-7702) Authorization tuple.

## Return Type

The [`Authorization.Authorization`](/docs/utilities/authorization/types#authorization).

`fromTuple.ReturnType<tuple>`