Ethereum: Foundry script not deploying: “max priority fee per gas higher than max fee per gas”

Ethereum Foundry Script Not Deploying: Resolving the “Maximum Priority Gas Fee Greater Than Maximum Gas Fee” Error

As a developer builds complex smart contracts, it is not uncommon to encounter issues during deployment. One common error that can occur is when the maximum priority gas fee (FEE) exceeds the maximum gas FEE (MAX FEE). In this article, we will explore why you are encountering this error in Ethereum Foundry and provide a step-by-step solution to resolve it.

Understanding the Error

The “Maximum Priority Gas Fee Greater Than Maximum Gas Fee” error occurs when a foundry script attempts to deploy a smart contract that exceeds the recommended FEE for deployment. The Foundry API has specific guidelines for FEE, which are calculated as follows:

• Maximum FEE per transaction (MAX FEE): 20,000 Gwei (0.02 Ether)

• Maximum Gas Priority Fee (FEE): 10,000 Gwei

• Total Maximum Gas Fee (TFEE): MAX FEE + FEE = 30,000 Gwei

If the total maximum gas fee exceeds this value, it means that the foundry script is trying to implement a contract with a fee priority that is too high, which can cause implementation errors.

Troubleshooting Steps

To resolve the issue, follow these steps:

• Review the Foundry Script: Start by reviewing your foundry script to make sure it is formatted correctly and follows the guidelines.

• Check FEE Settings: Make sure you are using the correct Maximum Priority Gas Fee (FEE) for your contract. You can find this setting in the foundry settings under “General”.

• Optimize the FEE: If possible, try to optimize the FEE of your contract by reducing the maximum priority fee per gas or adjusting other parameters.

• Check dependencies: Check that all dependencies required to implement your smart contract are correctly configured and optimized.

Example code

Here is an example foundry script with incorrect FEE settings:

Foundry

pragma solidity ^0.8.0;

contract My contract {

function myFunction() public Payable return(bool) {

// … contract logic …

require(paypal.address != 0, “Paypal address not set.”);

return false;

}

}

“`

In this example, FEE is set to 20,000 Gwei, which exceeds the maximum allowed value of 10,000 Gwei.

Conclusion

The “maximum priority gas fee greater than maximum gas fee” error in Ethereum Foundry can be frustrating when working with complex smart contracts. By following these troubleshooting steps and optimizing your FEE settings, you should be able to resolve this issue and successfully deploy your foundry script. Always review your foundry script carefully and make sure it complies with the guidelines set by the Foundry API.