For those that are unaware, mods are used and can be added to your client to enhance gameplay. They can be very useful in most situations! However, that being said, there are restrictions for certain mod usages on CraftMC.
Essentially, you are allowed to use any mods that improve your performance client-side (BetterFPS) or aesthetically pleasing ones (OptiFine). You may also use mods that assist your gameplay (not to be confused with hacks; Badlion Client). This includes, but is not limited to:
We cannot add every possible mod to the list due to the amount of mods there are out there but this is the general list. If you have any questions or concerns, and if you are unsure if your mod is allowed, you can always message me on Discord, Melodaze#0001, or through the forums. The list will be updated overtime as well!
NOTE: You may not use any form of a mini map mod. If the mini map feature is included in a client, please disable it. This is prohibited. Any type of hack is not allowed.