GAS Token Contract

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GAS is the utility token used to pay transaction fees on Neo N3. It has 8 decimals and is generated by holding NEO.

Methods

Method	Signature	Return	Safe	Description
name	name()	string	✅	Returns "GAS".
symbol	symbol()	string	✅	Returns "GAS".
decimals	decimals()	uint8	✅	Returns 8.
totalSupply	totalSupply()	uint256	✅	Current GAS supply (increases over time).
balanceOf	balanceOf(address)	uint256	✅	GAS balance of account (in 10^-8 units).
transfer	transfer(address,address,uint256,bytes)	bool	❌	Transfer GAS. Requires witness of from.

Code Example

import "devpack/contracts/NativeCalls.sol";

contract Treasury {
    function getGasBalance() public view returns (uint256) {
        return NativeCalls.gasBalanceOf(address(this));
    }

    function withdrawGas(address to, uint256 amount) public {
        require(Runtime.checkWitness(msg.sender), "unauthorized");
        bool success = NativeCalls.gasTransfer(address(this), to, amount, "");
        require(success, "transfer failed");
    }
}

TIP

GAS uses 10^8 decimals, not 10^18 like Ether. When porting EVM contracts, adjust your unit constants: 0.1 GAS = 10_000_000 (not 10^17).

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