Paper plugin (1.21.0–1.21.11+) and Fabric server mod (1.21.11) that locks chests, double chests, barrels, and shulker boxes to a named Ominous or regular Trial Key, with optional lockpicking.
JRSecurity implements the modern Mojang 1.20.5+ Payload API to deliver a secure and authentic mod‑list handshake from client to server. Built for Paper,Spighot,Bukkit Server + Fabric Client that rely on mod compliance.