# Extending sponsorship duration

By default, verifying paymaster sponsorships are valid for 10 minutes. It’s now possible to set a custom validity period of up to 24 hours.

### Use Cases

Extended sponsorship durations are helpful in several scenarios:

1. Multi-sigs – when there may be delays in collecting signatures
2. Scheduled transactions – For userOperations that are submitted at a later time

## Important Considerations

Your offchain Pimlico balance is held as a prefund for the duration that the paymaster signature is valid for. It’s released either when your sponsored userOp is included on-chain or when the signature expires.

* The maximum allowed duration is 24 hours (86,400 seconds).
* ERC-20 sponsorships always have a validity period of 10 minutes.

## Implementation

You can set the sponsorship duration through the `validForSeconds` parameter in the `paymasterContext`

:::code-group
```typescript [main.ts]
const userOpHash = await smartAccountClient.sendUserOperation({
 calls: [
  {
   to: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
   value: 0n,
   data: "0x"
  },
 ],
 // sponsorship will be valid for 1 hour
 paymasterContext: { // [!code ++]
  validForSeconds: 3600, // [!code ++]
 }, // [!code ++]
})
```

```typescript [clients.ts]
import { sepolia } from "viem/chains"
import { createPublicClient, http } from "viem"
import { privateKeyToAccount } from "viem/accounts";
import { createPimlicoClient } from "permissionless/clients/pimlico"
import { toSafeSmartAccount } from "permissionless/accounts"
import { createSmartAccountClient } from "permissionless"

const privateKey = process.env.PRIVATE_KEY
const apiKey = process.env.PIMLICO_API_KEY

export const publicClient = createPublicClient({
	chain: sepolia,
	transport: http(),
})

const pimlicoUrl = `https://api.pimlico.io/v2/sepolia/rpc?apikey=${apiKey}`
const pimlicoClient = createPimlicoClient({
	transport: http(pimlicoUrl),
	entryPoint: {
		address: entryPoint07Address,
		version: "0.7",
	},
})

const account = await toSafeSmartAccount({
	client: publicClient,
	owners: [privateKeyToAccount(privateKey)],
	entryPoint: {
		address: entryPoint07Address,
		version: "0.7",
	},
	version: "1.4.1",
})

export const smartAccountClient = createSmartAccountClient({
	account,
	chain: sepolia,
	bundlerTransport: http(pimlicoUrl),
	paymaster: pimlicoClient,
	userOperation: {
		estimateFeesPerGas: async () => {
			return (await pimlicoClient.getUserOperationGasPrice()).fast
		},
	},
})
```
:::