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# Update Quote Token \[token.updateQuoteToken]

Completes a prepared quote token update for a TIP-20 token. Requires the token's admin role.

Quote token updates are a two-step flow: [`token.prepareUpdateQuoteToken`](/tokens/tempo/prepareUpdateQuoteToken) stages the next quote token, then this action completes the update.

## Usage

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

const { newQuoteToken, receipt } = await client.token.updateQuoteTokenSync({
  token: '0x20c0000000000000000000000000000000000001',
})

console.log('New quote token:', newQuoteToken)
// @log: New quote token: 0x20C0000000000000000000000000000000000002
```

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

### Asynchronous Usage

The example above uses a `*Sync` variant of the action, that will wait for the transaction to be included before returning.

If you are optimizing for performance, you should use the non-sync `token.updateQuoteToken` action and wait for inclusion manually:

```ts twoslash
import { Actions } from 'viem/tempo'
import { client } from './viem.config'

const hash = await client.token.updateQuoteToken({
  token: '0x20c0000000000000000000000000000000000001',
})
const receipt = await client.transaction.waitForReceipt({ hash }).receipt

const { args } = Actions.token.updateQuoteToken.extractEvent(receipt.logs)
```

## Recipes

### Complete a Migration Staged by Another Operator

Assert the applied quote token matches your change ticket after completing, since this action applies whatever [`token.prepareUpdateQuoteToken`](/tempo/actions/token.prepareUpdateQuoteToken) staged last.

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

const expected = '0x20c0000000000000000000000000000000000002'

const { newQuoteToken } = await client.token.updateQuoteTokenSync({
  token: '0x20c0000000000000000000000000000000000001',
})

if (newQuoteToken.toLowerCase() !== expected.toLowerCase()) // [!code focus]
  throw new Error(`Unexpected quote token: ${newQuoteToken}`) // [!code focus]
```

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

### Trigger Downstream Updates When the Switch Lands

Combine the update with [`token.watchUpdateQuoteToken`](/tempo/actions/token.watchUpdateQuoteToken) so pricing and settlement services react the moment the new quote token applies.

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

const token = '0x20c0000000000000000000000000000000000001'

const watcher = client.token.watchUpdateQuoteToken({ token }) // [!code focus]
watcher.onLogs((logs) => {
  for (const log of logs) {
    if (log.eventName !== 'QuoteTokenUpdate') continue // [!code focus]
    console.log('New quote token live:', log.args.newQuoteToken) // [!code focus]
  }
})

await client.token.updateQuoteTokenSync({ token })
```

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

## Return Value

```ts
type ReturnType = {
  /** Account that completed the quote token update. */
  updater: Address
  /** New quote token. */
  newQuoteToken: Address
  /** Transaction receipt. */
  receipt: TransactionReceipt
}
```

## Parameters

### token

* **Type:** `Address | bigint`

Token to operate on: a TIP-20 token id or a contract address.

### account (optional)

* **Type:** `Account | Address`

Account that will be used to send the transaction.

### feePayer (optional)

* **Type:** `Account | boolean`

Fee payer for the transaction (TIP-1 gas sponsorship).

Pass `true` to defer the fee token to an external fee payer (e.g. a relay), or a local Account to co-sign the transaction as the fee payer.

### feeToken (optional)

* **Type:** `Address | bigint`

Fee token for the transaction.

Can be an unpaused USD-denominated TIP-20 token address or ID.

### gas (optional)

* **Type:** `bigint`

Gas limit for the transaction.

### keyAuthorization (optional)

* **Type:** `KeyAuthorization`

Signed key authorization to include with the transaction, authorizing an access key to act for the sending account.

### maxFeePerGas (optional)

* **Type:** `bigint`

Max fee per gas for the transaction.

### maxPriorityFeePerGas (optional)

* **Type:** `bigint`

Max priority fee per gas for the transaction.

### nonce (optional)

* **Type:** `number`

Nonce for the transaction.

### nonceKey (optional)

* **Type:** `'expiring' | 'random' | bigint`

Nonce key for the transaction (TIP-1009 2D nonces).

Use `'expiring'` to select an expiring nonce, which enables concurrent transaction submission without nonce ordering. Use `'random'` to select a random key.

### throwOnReceiptRevert (optional)

* **Type:** `boolean`
* **Default:** `true`

Whether a `Sync` action throws when the receipt reports a revert.

### validAfter (optional)

* **Type:** `number`

Unix timestamp after which the transaction can be included.

### validBefore (optional)

* **Type:** `number`

Unix timestamp before which the transaction must be included.