<VersionWarning version="0.1" />

# supportsExecutionMode

Checks if a [ERC-7579](https://eips.ethereum.org/EIPS/eip-7579) execution mode is supported on the smart account. Check out [this guide](/references/permissionless/how-to/accounts/use-erc7579-account) for a complete tutorial.

:::info
According to the specification, not all execution modes must be supported. So it is recommended to use this function to check if the execution mode is supported before using it.
:::

## Usage

:::code-group
```ts [example.ts]
import { erc7579Actions } from "permissionless/actions/erc7579"

const safeAccount = await signerToSafeSmartAccount(publicClient, {
	signer,
	safeVersion: "1.4.1",
	entryPoint: ENTRYPOINT_ADDRESS_V07,
	safe4337ModuleAddress: "0x7579EE8307284F293B1927136486880611F20002",
	erc7579LaunchpadAddress: "0x7579011aB74c46090561ea277Ba79D510c6C00ff",
	attesters: ["0x000000333034E9f539ce08819E12c1b8Cb29084d"],
	attestersThreshold: 1,
})

// Extend the client with the ERC7579 actions
const smartAccountClient = createSmartAccountClient({
	account: safeAccount,
	entryPoint: ENTRYPOINT_ADDRESS_V07,
	chain: sepolia,
	bundlerTransport: http(bundlerUrl),
	middleware: {
		gasPrice: async () => {
			return (await pimlicoBundlerClient.getUserOperationGasPrice()).fast
		},
		sponsorUserOperation: pimlicoBundlerClient.sponsorUserOperation,
	},
}).extend(erc7579Actions({ entryPoint: ENTRYPOINT_ADDRESS_V07 }))

const isExecutionModeSupported = await smartAccountClient.supportsExecutionMode({
	type: "delegatecall",
	revertOnError: true,
	selector: "0x",
	context: "0x",
})
```

```ts [publicClient.ts]
import { createPublicClient, http } from "viem"

export const publicClient = createPublicClient({
	transport: http("https://sepolia.rpc.thirdweb.com"),
})
```

```ts [signer.ts]
import { generatePrivateKey, privateKeyToAccount } from "viem/accounts"

const privateKey = generatePrivateKey()

export const signer = privateKeyToAccount(privateKey)
```
:::

## Returns

* **Type:** `boolean`

True if the execution mode is supported, false otherwise.

## Parameters

### type

* **Type:** `CallType`

Type of the call. Accepted values are `"call" | "delegatecall" | "staticcall"`.

### revertOnError (optional)

* **Type:** `boolean`

If true, the execution will revert if the call fails. Defaults to false.

### selector (optional)

* **Type:** `Hex`

The selector of the function to call. If not provided, `0x` will be used.

### context (optional)

* **Type:** `Hex`

Context bytes that will be passed to the module as part of `modeContext`.