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# Grant Token Roles \[token.grantRoles]

Grants roles for a TIP-20 token. Requires the admin role for each role being granted. [Learn more about token roles](https://docs.tempo.xyz/protocol/tip403/spec)

## Usage

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

const { receipt, value } = await client.token.grantRolesSync({
  roles: ['issuer'],
  to: '0x742d35Cc6634C0532925a3b844Bc9e7595f0bEbb',
  token: '0x20c0000000000000000000000000000000000001',
})

console.log('Role granted:', value[0].hasRole)
// @log: Role granted: true
```

```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.grantRoles` action and wait for inclusion manually:

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

const hash = await client.token.grantRoles({
  roles: ['issuer'],
  to: '0x742d35Cc6634C0532925a3b844Bc9e7595f0bEbb',
  token: '0x20c0000000000000000000000000000000000001',
})
const receipt = await client.transaction.waitForReceipt({ hash }).receipt

const events = Actions.token.grantRoles.extractEvents(receipt.logs)
```

## Recipes

### Separate Issuer and Pauser Duties Across Ops Teams

Grant each operations account only the roles its job requires: the minting service holds `issuer`, while the incident-response desk holds `pause` and `unpause`.

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

const token = '0x20c0000000000000000000000000000000000001'

await client.token.grantRolesSync({
  roles: ['issuer'], // [!code focus]
  to: '0x742d35Cc6634C0532925a3b844Bc9e7595f0bEbb', // [!code focus]
  token,
})

const { value } = await client.token.grantRolesSync({
  roles: ['pause', 'unpause'], // [!code focus]
  to: '0x8ba1f109551bD432803012645Ac136ddd64DBA72', // [!code focus]
  token,
})

console.log('Roles granted:', value.length)
// @log: Roles granted: 2
```

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

### Bootstrap Roles on a Newly Created Token

Combine `grantRolesSync` with [`token.createSync`](/tempo/actions/token.create) to deploy a stablecoin and hand its issuer role to your minting service in one flow.

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

const { token } = await client.token.createSync({ // [!code focus]
  currency: 'USD',
  name: 'Alpha USD',
  symbol: 'alphaUSD',
})

const { value } = await client.token.grantRolesSync({
  roles: ['issuer'],
  to: '0x742d35Cc6634C0532925a3b844Bc9e7595f0bEbb',
  token, // [!code focus]
})

console.log('Issuer granted:', value[0].hasRole)
// @log: Issuer granted: true
```

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

## Return Value

```ts
type ReturnType = {
  /** Transaction receipt. */
  receipt: TransactionReceipt
  /** Role membership update events. */
  value: readonly {
    /** Role whose membership changed. */
    role: Hex
    /** Account whose role membership changed. */
    account: Address
    /** Sender that changed role membership. */
    sender: Address
    /** Whether the account has the role after the update. */
    hasRole: boolean
  }[]
}
```

## Parameters

### roles

* **Type:** `readonly ("defaultAdmin" | "pause" | "unpause" | "issuer" | "burnBlocked")[]`

Roles to grant.

### to

* **Type:** `Address`

Address to grant the role to.

### 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.