### Allowed:
1. Non-commercial use of the mod.
2. Add-on creation under these conditions:
-Can use the mod’s API, public methods, and assets (textures, sounds, models) if:
-They are accessed without decompilation/modification of the original mod.
-The add-on does not repackage or redistribute original files.
-Must credit the original mod (e.g., "Requires [AltCore] by Altarmo").
- Must be unofficial (no implied endorsement, e.g., "Unofficial add-on for [AltCore]").

### Prohibited:
1. Modifying/decompiling the original mod’s code (except for allowed API usage).
2. Commercial use (selling the mod, paid access, ad-based monetization).
3. Claiming authorship or hiding the original creator’s credit.
4. Bypassing restrictions (e.g., using reflection to access private code).

### Notes:
- Add-ons violating these terms will be reported to CurseForge/Modrinth etc. and subsequently blocked.
- Modpacks are allowed if they follow the same rules as add-ons.

Full license text:
https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode