Configuring Gas
There are only 2 knobs you can turn today on Aptos to configure gas cost for a transaction.
- Max gas amount - The number of gas units you are willing to spend on a transaction.
- Gas unit price - The number of octas (APT*10^-8) from a minimum of 100.
Max gas amount
If a max gas amount is too low for a transaction to complete, OUT_OF_GAS will be returned, and the transaction will
abort. This means that nothing will happen in the transaction, but you will still pay the gas. Setting this to a
reasonable bound prevents you from spending too much on a single transaction.
Range: 2 - ??? (TODO: Put number or how to get it from gas config)
If you do not have enough APT to fulfill the gas deposit (max gas amount * gas unit price), you will get an error of
INSUFFICIENT_BALANCE_FOR_TRANSACTION_FEE. This means you will need more APT in your account, or to adjust one of these
two values.
Gas unit price
Gas unit price is the amount you're willing to pay per gas unit on a transaction. Higher values are prioritized over lower values. When choosing a gas unit price, keep in mind that your account needs enough APT to pay for the entire max gas amount times the gas unit price.
Range: 100 - ??? (TOOD: put number or how to get it from gas config)
Gas Config
TODO: Explain how to get it directly from on-chain.