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# Prepare and Sign Authorizations

## Overview

[`wallet.prepareAuthorization`](/docs/actions/wallet/prepareAuthorization) resolves the Chain ID and
authorization nonce for an EIP-7702 delegation. [`wallet.signAuthorization`](/docs/actions/wallet/signAuthorization)
signs the authorization with a Local Account.

## Recipes

These recipes assume you have [set up a Client](/docs) with a Local Account and [`walletActions`](/docs/actions/wallet).

### Prepare an Authorization

The `address` is the implementation contract the EOA authorizes as its delegated code.

:::code-group
```ts twoslash [example.ts]
import { client } from './viem.config'

const authorization = await client.wallet.prepareAuthorization({ // [!code focus]
  address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2', // [!code focus]
  executor: 'self', // [!code focus]
}) // [!code focus]
```

```ts twoslash [viem.config.ts] filename="viem.config.ts"
// [!include ~/snippets/docs/viem.config.ts:setup]
```
:::

### Sign an Authorization

The Action can prepare and sign in one call.

:::code-group
```ts twoslash [example.ts]
import { client } from './viem.config'

const authorization = await client.wallet.signAuthorization({ // [!code focus]
  address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2', // [!code focus]
  executor: 'self', // [!code focus]
}) // [!code focus]
```

```ts twoslash [viem.config.ts] filename="viem.config.ts"
// [!include ~/snippets/docs/viem.config.ts:setup]
```
:::

## Best Practices

### Set the Executor Correctly

Use `executor: 'self'` when the authorizing EOA also submits the EIP-7702 transaction. Viem accounts
for the transaction's nonce increment while preparing the authorization nonce.

### Review the Delegation Target

Delegation grants the implementation code authority over the EOA. Verify the implementation address,
Chain, bytecode, and upgrade behavior before requesting a signature.

## See More

<Cards>
  <Card icon="lucide:send" title="Send & Write" description="Attach the signed authorization to a transaction." to="/docs/guides/authorizations/send-write" />

  <Card icon="lucide:search-check" title="Inspect Delegations" description="Read the active implementation and verify the signature." to="/docs/guides/authorizations/delegations" />
</Cards>