Command Helper does exactly that, it helps you. If you hold down your desired key, it'll show important and useful information about the command typed in the textbox.
Command Helper itself is Google built in. You've got a whole small wiki for every command found in the game. Why leave the game to search how to summon a blue axolotl on 1.18.2, instead of just holding down Alt and getting the right answer right away?
In the help window, there's an Ask Assistant button. You choose your language and AI can explain it based on the detailed documentation given to it by the mod.
It's that easy.
Check the ‘Developers’ channel in the mod’s Discord server to see how to help the players understand your mod’s commands. We’d really be proud to have you collaborating with us to help the players, so what are ya' waiting for?