ChunkPeek

Stand in a chunk, see what's inside it.

The follow-up to LagPeek: once you know which chunk is the problem, stand in it and /chunkpeek tells you why. Read-only, no config.

What it shows

• Chunk coordinates + block range
• Entities in the chunk, grouped by type
• Tile entities grouped by type — with hoppers called out specifically (the classic hidden lag source)
• What's keeping the chunk loaded: players, /forceload, or a plugin chunk ticket (names the plugin!)
• Inhabited time and whether it's a slime chunk

Install

Drop the jar in plugins/, restart. Nothing to configure. Requires Paper 1.21.x / 26.x (matching jar).

Command & permission

Command	Permission	Default
/chunkpeek	chunkpeek.use	OP

Player-only (it inspects the chunk you're standing in).

Safe by design

Read-only. The chunk you're in is already loaded, so nothing is ever force-loaded, and nothing is ever modified. Only network activity: one startup update check (Modrinth public API) + anonymous bStats stats.