The ABCI specs declare that results of DeliverTx and CheckTx contain the following information:
...
GasWanted (int64): Amount of gas requested for transaction.
GasUsed (int64): Amount of gas consumed by transaction.
...
Fee (cmn.KI64Pair): Fee paid for the transaction.
I'm not sure why these parameters should appear in the response. How "actionable" are these to the Tendermint Core, if at all?
Feel free to ignore these for now. They are not used by Tendermint core.