# Using ZeroDev with Gelato (/sdk/v5_3_x/faqs/use-with-gelato)

> For the complete documentation index, see [llms.txt](/llms.txt)



<VersionWarning version="5.3.x" />

Gelato's has a unique approach to handling transaction fees without the need for an EntryPoint deposit or an on-chain paymaster. Instead, transaction fees are settled post-execution via [1Balance](https://docs.gelato.network/web3-services/relay/subscriptions-and-payments/1balance-and-relay) across all supported networks, ensuring accurate charging of gas consumed without necessitating per-chain user deposits. This method relies on setting `maxFeePerGas=0`, thereby eliminating the need for upfront fee payments (`requiredPrefund=0`).

For a deeper understanding of Gelato's capabilities, refer to [their comprehensive documentation](https://docs.gelato.network/web3-services/account-abstraction/advantages-and-highlights).

## ZeroDev SDK with Gelato [#zerodev-sdk-with-gelato]

Integrating Gelato with our SDK necessitates specific configurations, diverging from conventional bundler setups due to Gelato's distinct fee management mechanism.

### Essentail Configurations [#essentail-configurations]

* **Omit Paymaster**: Unlike other services, Gelato's transactions are sponsored without specifying a paymaster. Thus, your account will directly bear the gas fees incurred through Gelato's operations.

Initialization with Preset Options

```typescript
const kernelClient = await createEcdsaKernelAccountClient({
  // Mandatory fields
  chain,
  projectId,
  signer,

  // Gelato-specific optional fields
  provider: "GELATO",
  paymaster: 'NONE',  // Explicitly omit the use of a paymaster
})
```

Manual Setup without Presets

If opting for a manual configuration, ensure the sponsorUserOperation middleware is not used, as illustrated below (commented out for clarity):

```typescript
const kernelClient = createKernelAccountClient({
  account,
  chain,
  transport: http(process.env.BUNDLER_RPC),
  // The following is omitted for Gelato integration:
  // sponsorUserOperation: async ({ userOperation }): Promise<UserOperation> => {
  //   const paymasterClient = createZeroDevPaymasterClient({
  //     chain,
  //     transport: http(process.env.PAYMASTER_RPC),
  //   })
  //   return paymasterClient.sponsorUserOperation({
  //     userOperation,
  //  })
  // },
})
```

### Transaction Configuration [#transaction-configuration]

When dispatching transactions or user operations through Gelato, it's crucial to set both `maxFeePerGas` and `maxPriorityFeePerGas` to `0x0`. This ensures compatibility with Gelato's fee settlement approach.

* Sending a Transaction

```typescript
const txnHash = await kernelClient.sendTransaction({
  to: zeroAddress,
  value: BigInt(0),
  data: "0x",
  // Gelato-specific configurations (you may need to ignore typescript errors)
  maxFeePerGas: "0x0",
  maxPriorityFeePerGas: "0x0",
})
```

* Dispatching a User Operation

```typescript
const userOpHash = await kernelClient.sendUserOperation({
  userOperation: {
    callData: await account.encodeCallData({
      to: zeroAddress,
      value: BigInt(0),
      data: "0x",
    }),
    // Gelato-specific configurations (you may need to ignore typescript errors)
    maxFeePerGas: "0x0",
    maxPriorityFeePerGas: "0x0",
  },
})
```