Repo: https://github.com/Peezzied/SharpSK
Requires Java 8. Java 7 is no longer supported

Original:
Addon - SharpSK [1.8 - 1.12+] | skUnity Forums

Docs/Syntaxes:
You can still find all the syntaxes here:
https://skunity.com/doc?addon=SharpSK

About:
SharpSK is an addon that is packed with support for a lot of different plugins that you will be able to interact with in skript. It also contains a lot of features itself to try out.

Changes:
class for conditions and effect updated from fr.xephi.authme.api.NewApi to fr.xephi.authme.api.v3.AuthMeApi

Supported Plugins:
MythicMobs Get it here (not tested)
AuthmeReloaded Get it here (tested)
CoreProtect Get it here (not tested)
GlowAPI Get it here (not tested)
JobsReborn Get it here (not tested)
LightAPI Get it here (not tested)
mcMMO Get it here (not tested)
Multiverse Get it here (not tested)
PermissionsEx Get it here (not tested)
uCars Get it here (not tested)
WorldEdit Get it here (not tested)
WorldGuard Get it here (not tested)
LogBlock Get it here (not tested)
Towny Get it here (not tested)
Kingdoms+ (Paid) Get it here
Kingdoms (Free version of Kingdoms+) Get it here (not tested)
Luckperms (W.I.P) Get it here (not tested)
FastAsyncWorldEdit (W.I.P) Get it here (not tested)
Slimefun (W.I.P) Get it here (not tested)
GroupManager (W.I.P) Get it here (not tested)

This is not the official SharpSK