> ## Documentation Index
> Fetch the complete documentation index at: https://docs.moca.network/llms.txt
> Use this file to discover all available pages before exploring further.

# Smart Accounts

> Check deployment status and deploy AIR Kit smart accounts on any supported chain, with gas sponsored by the paymaster on first transaction.

Smart accounts are the primary interface for blockchain interactions in AIR Kit. The smart account is always used when interacting with the AIR Account, while the MPC (Multi-Party Computation) wallet only acts as a signer. AIR Kit provides methods to check deployment status and deploy smart accounts when needed.

**Key Technical Details:**

* Smart accounts are **chain-specific** - deployment status and operations depend on the currently selected chain
* If a smart account is not deployed and your dApp triggers a transaction, AIR Kit will automatically bundle the smart account deployment with the transaction
* Smart account deployments are **sponsored by AIR Kit** via paymaster policy, so users don't need to pay gas fees for deployment

### isSmartAccountDeployed()

Checks whether the user's smart account has been deployed on the currently selected blockchain.

**Method Signature:**

```tsx theme={null}
public async isSmartAccountDeployed(): Promise<boolean>
```

**Returns:**

* `true` if the smart account is deployed on the current chain
* `false` if the smart account is not yet deployed on the current chain

**Requirements:**

* User must be logged in
* User must be on a supported chain

### deploySmartAccount()

Deploys the user's smart account to the currently selected blockchain. This method explicitly deploys the smart account, though deployment will also happen automatically when needed.

**Method Signature:**

```tsx theme={null}
public async deploySmartAccount(): Promise<{ txHash: string }>
```

**Returns:**

```tsx theme={null}
{
  txHash: string; // The transaction hash of the deployment transaction
}
```

**What happens during deployment:**

1. Checks if the smart account is already deployed on the current chain (throws error if already deployed)
2. Creates a deployment transaction that sends to the zero address with no value
3. Submits the transaction to the blockchain using the sponsored paymaster
4. Returns the transaction hash for tracking

**Requirements:**

* User must be logged in
* User must be on a supported chain
* Smart account must not already be deployed on the current chain

**Example:**

```tsx theme={null}
try {
  const { txHash } = await airService.deploySmartAccount();
} catch (error) {
  console.error("Smart account deployment failed:", error);
  // Handle error appropriately
}
```

**Important Notes:**

* **Deployment is sponsored by AIR Kit** - users don't pay gas fees for deployment
* The deployment transaction may take some time to be confirmed on the blockchain
* After deployment, the user will be able to perform blockchain operations on this chain
* **Automatic bundling**: If you don't explicitly deploy and trigger a transaction, deployment will be automatically bundled with the transaction

### Smart Account Deployment Flow

When working with smart accounts, you have two approaches:

**Option 1: Explicit Deployment (Recommended for better UX)**

```tsx theme={null}
const isDeployed = await airService.isSmartAccountDeployed();
if (!isDeployed) {
  const { txHash } = await airService.deploySmartAccount();
  // Wait for deployment confirmation before proceeding
}
```

**Option 2: Let AIR Kit Handle Deployment Automatically**
Simply proceed with your transaction - deployment will be bundled automatically if needed.

**Recommendation:** Use Option 1 for better user experience, as it allows you to show deployment progress and handle any deployment-specific errors separately from your main transaction logic.