How Karsus Codex Works
Build items, assemble mods, and track immutable manifest history per item/mod stream.
Use creator pages for editing and generation. Use public pages for discovery, build browsing, and downloads.
Manifest compare provides semantic and JSON-level diffs so changes are transparent to creators and users.
Install it locally
On Windows and Mac, the .pak goes in your Baldur's Gate 3 Mods folder, and the in-game Mod Manager takes it from there. Console? Sorry. Truly. We'd help you out if we could - once we get Mod.io integration, maybe?
Put it on Nexus Mods
The .pak uploads to Nexus Mods as-is. No repacking, no toolkit - create a mod page and upload the file you downloaded.
Put it on mod.io
Import the .pak into the BG3 Toolkit, then upload to mod.io from there. The full walkthrough lives on the Toolkit publish guide.