-Abstract Methods (use if Boss Bars are off [may only apply to old versions, just put it in the mods folder, not sure if zip needs to be converted to a Jar or anything], if this doesn't happen that's fine, it have been fixed in later Legacy Fabric loader/Legacy Fabric API builds, but I think Astract methods are still being looked into, either way don't add it to your mods folder if your not being effected or don't know what your doing, just saw this and thought it would be useful to post either way as just something that 'exists')
Just added an updated version of 1.8.9 Legacy Fabric API and added 1.8.9 Legacy Extended Hotbar to the 1.8.9 Legacy Fabric Test Modpack (a pack for just seeing what is compatible together and to just mess around with whatever mods for Legacy Fabric 1.8.9 versions that you want):
No clue if this offers more than what StationAPI has or if it replaces StationAPI but either way I'd say if you want a more official Fabric API by Fabric Mod Devs (StationAPI was made by those over at the Modification Station) but for Cursed Fabric I assume this would be it. *Shrugs*
No mods are for Cursed Legacy API yet but I assume it's Developer ready (just look for the Example Mod).
All StationAPI mods work just be aware of the Better Nether Beta/iron Chest conflict.
All 3 of these mods been added to Cursed Fabric spoiler
Install Tutorial For Vanilla Launcher (along with a Notice for Cursed Legacy API and StationAPI differences)
In short Cursed Legacy API is another API for Cursed Fabric and intended for the Vanilla launcher Installer (Cursed Legacy API works in the MultiMC instance also, but StationAPI only work in the MultiMC instance not the Vanilla launcher installed instances), but StationAPI mods and Cursed Legacy API are not supported they are completely different. So expect different mods for these APIs. Quit Button is a good test mod as it only needs Cursed Fabric loader, no API while many of the mods I've shown for StationAPI require StationAPI in the mods folder of a MultiMC Cursed Fabric instance. Now that I've done some testing that's what I've experienced and what I can confirm. It's pretty much similar to the Forge/Fabric difference only better 2 APIs for Cursed Fabric loader instead is the way I'd put it Confusing but it is the way it is it seems for now.
Overviews of Creative, Better Nether Beta and Quit Button
-Iron Chests as it conflicts with Better Nether (make sure to remove anything you have stored in your Iron Chests or are happy with changes to the Nether/making a new world is preferred if you want to use the Better Nether mod).
Otherwise posted a Recipes/covering blocks video for Better Nether Beta (made this for Recipes as didn't show them in the last video due to not knowing the mod conflicting with it at the time, that mod was Iron Chests, so now that I solved that I could show recipes with the HMI mod):