Hi, I've been trying this mod in my modpack (something that I would like to know if I'm allowed to publish somewhere or not) and I'm trying to use some commands without having to click the NPC, but I don't know if it's possible. Is there any way to do that?

I'm trying to use some commands without having to click the NPC, but I don't know if it's possible. Is there any way to do that?

You could use custom scripts with Carpet mod (which can do much more than just run commands), as described here:
https://samolego.github.io/Taterzens/1.6.5/professions/scarpet_profession/

However, that means Carpet mod would need to be in your mod pack (at least on the server-side).

As James mentioned above, the easiest way to do it would be with carpet scripting.
See https://github.com/samolego/TaterzenScarpetProfessions#available-events for the events, you'd probably be interested in

__on_taterzen_approached_by

which triggers every tick when players are nearby.

Alternatively you could code a profession, although that requires java knowledge and is harder than scripting.

Of course you can include the mod in pack, it's MIT licensed :).

Thanks! however, it says that it's only available on Fabric, but I'm on Forge

Ah, that would require you to code it using java then ...