Thanks for the quick reply! I'm on kasa version 0.7.0.2

Here is the command I tried:
kasa --host 192.168.1.96 --child 80063ADA9F449E4742D06E363053EA9E222690A005 state

Here is kasa response:

Usage: kasa [OPTIONS] COMMAND [ARGS]...
Try 'kasa --help' for help.

Error: No such option: --child Did you mean --help?

I also tried with index:
kasa --host 192.168.1.96 --index 6 on

Response:
Usage: kasa [OPTIONS] COMMAND [ARGS]...
Try 'kasa --help' for help.

Error: No such option: --index

So the --index and --name parameters need to go after the command you want to apply them too, i.e.

kasa --host 192.168.1.96 on --index 6

That's why they're only listed when you do kasa on --help and not kasa --help