---
updatedAt: 2026-03-18T08:20:42.000Z
agentTools:
projectIndex: https://docs.lmnl.app/v2/llms.txt
---
# Update Gas Station rules
As an admin, you can update the Gas Station rules in Liminal Vaults for both MPC wallet and Sprayer. The Gas Station rules are such that when the coin balance is less than the certain amount in Sprayer or MPC wallet, then Gas Station funds them with a certain amount of native coins.
You can update the Gas Station rules in the following ways:
* [Update from the **Wallet** section.](https://docs.lmnl.app/docs/update-gas-station-rules#update-from-the-wallet-section)
* [Update from the **Wallet** > **Gas Station** section.](https://docs.lmnl.app/docs/update-gas-station-rules#update-from-the-wallet--gas-station-section)
## Update from the Wallet section
1. Log into [Vaults](https://vaults.lmnl.app).
2. On your dashboard, select **Wallets** from the left panel.
3. Select the three dots icon for a wallet as shown in the screenshot below. Then select **Update Autogas Refill**.
4. In the fields, **Wallet** and **Destination**, you can view your Gas Station and Sprayer or MPC wallet respectively.
5. In the **If balance is less than** field, enter the minimum value for the MPC wallet or Sprayer balance.
6. In the **Transfer** field, enter the amount that should be transferred when the balance is less than the value you have set.
7. In the **Maximum fees** field, you can select *Auto* or *Custom*. Auto is the option to transfer the amount when the associated transaction/gas fee is the lowest. Custom is the option to add a custom fee amount for the transaction.
8. Select **Continue** to save the details.
## Update from the Wallet > Gas Station section
1. Log into [Vaults](https://vaults.lmnl.app).
2. On your dashboard, select **Wallets** from the left panel.
3. Select **Gas station** and then select **Rules**.
4. Select the three dots icon for a wallet. Then select **Edit** to edit the details.
5. In the **Update Gas Station Rule** popup, the **Wallet** is the Gas Station and **Destination** is the destination address of the Sprayer or MPC wallet that needs to be filled.
6. In the **If balance is less than** field, enter the minimum value for the MPC wallet or Sprayer balance when the transfer should happen.
7. In the **Transfer** field, enter the amount that should be transferred when the balance is less than the value you have set in the above field.
8. In the **Maximum fees** field, you can select between *Auto* and *Custom*. *Auto* automatically transfers the amount when the associated transaction or gas fee is lowest. *Custom* allows you to set a maximum fee amount, beyond which the transfer won't occur..
9. Select **Confirm** to save the details.
> **Note**:
>
> * You can update rules and set up your Gas Station irrespective of the current amount of native coins it contains. It will reflect under **Wallets** > **Gas Station**, but won't be functional until you add sufficient assets to it.
> * For MPC wallets, you first have to enable Gas Station. Once it's enabled and rules are updated, the Gas Station rules will be available in the **Wallets** > **Gas Station** > **Rules** section. To learn how to enable the Gas Station rules, see [Enable auto gas refill](https://docs.lmnl.app/docs/enable-auto-gas-refill).
> * For EVM chains, the updated Gas Station rules take effect after a 1-hour interval.
If you enable your Gas Station without updating its rules, the following default settings will be applied automatically.
| Sr No. | Protocol | Default max fee | Default transfer amount | Default min amount |
| ------ | ------------------- | ---------------- | ----------------------- | ------------------ |
| 1 | Ethereum | 578.01443888 | 0.10000000 | 0.00100000 |
| 2 | Binance Smart Chain | 3000.00000000 | 0.10000000 | 0.00100000 |
| 3 | Polygon | 17220.52755993 | 0.10000000 | 0.00100000 |
| 4 | Gnosis | 1000.00000000 | 0.10000000 | 0.00100000 |
| 6 | Arbitrum | 2281.46250000 | 0.10000000 | 0.00100000 |
| 7 | Avalanche | 1000000.00000000 | 0.10000000 | 0.00100000 |
| 8 | Optimism | 1000.00000000 | 0.10000000 | 0.00100000 |