CervLogger
CervLogger records player activity into a local database, letting staff inspect block history and roll back griefing on NeoForge servers.
What it does
The mod logs block placement and breaking, explosions, container use and other player actions into a local SQLite database that needs no setup. Staff can search that history with an inspector mode that shows the record of a clicked block, and a lookup command filters results by player, time and radius. Rollbacks restore the affected blocks after a grief, with the window set in seconds or hours, and they run on the main server thread so they stay safe alongside other optimization mods.
Blocks moved inside Create contraptions and Sable sub-levels bypass standard block events, so their movement is not logged. CervLogger is server-side only: players join with vanilla or modded clients and install nothing. It is published for NeoForge 1.21.1 only, with 1.0.0 as the latest file, and is released under the GNU Affero General Public License v3.0 only, as open source. Source code and an issue tracker are public.
Key features
Block history lookups
Staff can query the record of a block or area and see who placed, broke or changed it, and when.
Inspector mode
A click on a block shows its logged history immediately, without typing a command.
Rollback of grief
Filtered by player, time and radius, a rollback restores the blocks a player changed in a recent window.
Explosion and container logging
Explosions and interactions with containers are recorded alongside placed and broken blocks.
Lookup command syntax
Commands accept filters such as user, time window, radius and block type to narrow a rollback to a target.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
GriefLogger Rollback Addon is an open source NeoForge add-on for 1.21.1 that is server required with an optional client, licensed under the GNU Lesser General Public License v2.1 only. AquaGuard covers Fabric, Forge and NeoForge for 1.20.1 – 1.21.1, is server required with an optional client, and is released under the MIT License. MineTracer is a Fabric-only, server-side mod for 1.20.1 – 26.3 under the MIT License. CervLogger differs by running on NeoForge alone, for 1.21.1 alone, and on the server only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| CervLogger | NeoForge | 1.21.1 | Server-side only | 2026-07-20 |
| GriefLogger Rollback Addon (GLRA) | NeoForge | 1.21.1 | Server required, client optional | 2025-11-29 |
| AquaGuard | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Server required, client optional | 2026-09-24 |
| MineTracer | Fabric | 1.20.1 – 26.3 | Server-side only | 2026-10-08 |
Questions
Does CervLogger need to be installed on the client?
Which loader and game version does CervLogger support?
Are moved blocks in Create contraptions logged?
Is the source code available?
In the catalog
CervLogger is one of 8,499 Technology mods on ModsFinder, and one of 3,557 Technology mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
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What the author says
Block logging, lookup, rollback and restore for NeoForge 1.21.1 servers. CervLogger records player activity in a local database and lets staff inspect block history, search the logs and roll back grief in seconds — with no client-side installation required. Vanilla and modded clients can join freely.
Official listing
- Modrinth page
- modrinth.com/mod/cervlogger
- Owner
- scarletjess180
- Published
- 2026-07-20
- Updated on Modrinth
- 2026-07-20
- Facts verified
- 2026-10-15