You can find the modding API by clicking the "Learn More" button on top of the Workshop Community section, which has tutorials and examples for making item mods, skin mods, and encounter mods.

I've never made an item mod, so I can't give much advice on making them. You could ask people in the Rabbit & Steel Discord server for modding help, as there's plenty of people who've made various mods, including item mods, and talk to the developer of the game for modding help.

One thing that could be helpful is downloading other peoples mods and using their files as a reference for how to format your own. You can find your downloaded workshop mods in C:\Program Files (x86)\Steam\steamapps\workshop\content\2132850
Although they will just be random numbers instead of mod names

Originally posted by 󠀡󠀡:

One thing that could be helpful is downloading other peoples mods and using their files as a reference for how to format your own. You can find your downloaded workshop mods in C:\Program Files (x86)\Steam\steamapps\workshop\content\2132850
Although they will just be random numbers instead of mod names

Okay so I messed up, I got this message while trying to boot up the game/load up my mod

___________________________________________
############################################################################################
ERROR in
action number 1
of Create Event
for object obj_dataLoader:

unable to add a number to string############################################################################################
gml_Script_scr_mod_refresh_lists (line 30)
gml_Object_obj_dataLoader_Create_0 (line 171)

Originally posted by dotflow:

Originally posted by 󠀡󠀡:

One thing that could be helpful is downloading other peoples mods and using their files as a reference for how to format your own. You can find your downloaded workshop mods in C:\Program Files (x86)\Steam\steamapps\workshop\content\2132850
Although they will just be random numbers instead of mod names

Okay so I messed up, I got this message while trying to boot up the game/load up my mod

___________________________________________
############################################################################################
ERROR in
action number 1
of Create Event
for object obj_dataLoader:

unable to add a number to string############################################################################################
gml_Script_scr_mod_refresh_lists (line 30)
gml_Object_obj_dataLoader_Create_0 (line 171)

Yeah, I'm having a similar thing, I'll let ya know if I figure it out