Outline Guard
by csclub05
Outline Guard is a Fabric utility that pauses block mining when the crosshair reaches a column past a player's own marker blocks.
What it does
In the GUI opened by pressing D and C, a player adds marker blocks by typing block IDs like minecraft:netherrack or minecraft:red_concrete into the list. Clicking Set with only the marker selected adds it to the configuration. Holding left click while mining resumes automatically once the player moves back to a safe block.
When the crosshair reaches a protected column below a marker, mining stops so a stray swing does not clear the area. The list is saved locally in the config, and the mod only affects the player who installed it. It does not protect blocks for other players on a server, since it runs on the client alone.
Outline Guard is distributed under the MIT License and is open source, with source code published. Files are published for Fabric only, covering 1.21.4, 1.21.8 and 1.21.11, with 1.0.2 for 1.21.11 as the latest file, released on 2026-08-23.
Key features
Marker block list
Any block ID can be added as a marker, so the protected layers follow the blocks the player places.
Mining pause at markers
Mining stops when the crosshair reaches a protected column below a marker, which prevents accidental vertical mining.
Automatic resume
Once the crosshair leaves the protected column and the player steps onto a safe block, mining picks back up on its own while left click stays held.
In-game GUI
The marker list is edited in a screen opened with D and C, where blocks are added with the Set button.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Clearing a built area
A player digging out a room can mark the floor or wall blocks so a held click does not carry the mining down past them.
Who it’s for: Players who clear large areas in singleplayer or on a server where they run the mod themselves, and who want a guard against accidental vertical digging.
How it compares
Remove Block Outline is a Fabric mod for 1.21.11, client-side only, and all rights are reserved, so its code is not open source. More Outlines is also open source under the MIT License, but it requires the client and only lets the server optionally add it, with files for 1.21.8 – 1.21.11. Outline Guard covers 1.21.4, 1.21.8 and 1.21.11 and runs on the client alone.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Outline Guard | Fabric | 1.21.4 – 1.21.11 | Client-side only | 2026-08-23 |
| Remove Block Outline | Fabric | 1.21.11 | Client-side only | 2026-02-13 |
| More Outlines | Fabric | 1.21.8 – 1.21.11 | Client required, server optional | 2026-06-20 |
Questions
Does Outline Guard need to be installed on the server?
Which loader does Outline Guard support?
Where are the marker settings stored?
In the catalog
Outline Guard is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from csclub05
Similar mods
What the author says
Outline Guard is a fully client-side Fabric mod. It helps prevent accidental vertical mining past your own outline markers while clearing an area. The mod only affects the player who has it installed. It does not protect blocks from other players, and it should not be installed server-side.
Official listing
- Modrinth page
- modrinth.com/mod/outline-guard
- Owner
- csclub05
- Published
- 2026-06-09
- Updated on Modrinth
- 2026-08-23
- Facts verified
- 2026-10-15