The first Paper release, a beta. Paper 1.21.1 (build 133, the last 1.21.1 build). The plugin is the server side only: players who edit need the Sculptory mod for their loader (Fabric or NeoForge); everyone else joins with nothing installed. Network protocol 6.

• Install: sculptory-paper-0.1.0-beta+1.21.1.jar in plugins/. Settings in plugins/Sculptory/server.json, the library in plugins/Sculptory/library/, the undo history with each world.
• WorldGuard regions are respected: an edit changes only blocks where the player may both place and break, WorldGuard's rule for building by hand. A world whose region data failed to load refuses edits. WorldGuard (which needs WorldEdit) is optional.
• Builder mode fires the server's block events, so protection and logging plugins see every place and break and can cancel one (the step is put back and refused).
• Record, as on Fabric (see Fabric 0.5.0-beta, "New"): a player with the Sculptory 0.5.0-beta mod and the builder permission has building by hand in the history without switching a power on.
• Other claim plugins are not respected by bulk edits: fills, brushes and pastes fire no block events, like WorldEdit's, so GriefPrevention, Lands, Towny, PlotSquared and the like neither see nor stop them. Only WorldGuard regions, spawn protection and the world border limit them. Builder mode is covered (above).
• Permissions are Bukkit nodes, sculptory.*: LuckPerms or another permissions plugin decides; without a grant, operators may edit. LuckPerms changes apply at once.
• Jump and Through teleport the Paper way, so a plugin that blocks a teleport blocks them too.
• A world unloaded by a plugin (Multiverse, a minigame) first ends the edits running there and saves their history.
• Paper 1.21.1 only: on another Minecraft version the plugin refuses to enable and says why. Spigot and Folia are not supported.
• Known limits: after a crash, up to about a second of edits (five for brush strokes) can't be undone. Undo of water and lava takes back flows next to the edit, not chain reactions further away. Builder mode records the blocks within two of each change, so far-reaching redstone reactions are not undone. /sculptory has version and, for admins, fill, undo and redo; restart the server after editing server.json. After Paper's /reload confirm, builders must rejoin before editing again.