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DOL4 (Datapack OP Level 4)

by ap12

DOL4 raises the function permission level to 4 for single-player worlds so datapack functions can run commands that normally need operator rights.

FabricClient and serverCC0 1.0 UniversalOpen source26.2 – 26.3

What it does

In a single-player world, DOL4 lets datapack functions run at permission level 4, which permits commands such as tick control that are otherwise limited to operators. Both the server and every player need the mod, and it is released under the CC0 1.0 Universal license, so the code is open source. Files are published for Fabric only, covering 26.2 and 26.3, with 1.1.0 for 26.3 as the latest file.

Key features

  1. Permission level 4 in single player

    Datapack functions in a single-player world run at level 4 instead of the default lower level.

  2. Tick command access

    Commands for controlling game ticks, such as those from tick datapacks, become usable by functions without operator setup.

  3. No extra setup

    The level change applies through the mod alone, so a datapack that needs level 4 works without editing game files.

Compatibility

Latest build for each game version and loader.

26.31.1.0
26.21.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Tick Command Improvements is server-side only, under the MIT License, and built for 26.2 alone, so it does not cover players who need the client side. Better Op is also server-side only and is open source under the GNU Lesser General Public License v3.0 only, but it targets 1.16.5.

ModLoadersGame versionsEnvironmentUpdated
DOL4 (Datapack OP Level 4)Fabric26.2 – 26.3Client and server2026-09-28
Tick Command ImprovementsFabric26.2Server-side only2026-06-16
Better OpFabric1.16.5Server-side only2021-03-30

Questions

Does DOL4 need to be installed on both sides?

Yes. Every player and the server need a copy of the mod.

Which loader does DOL4 use?

DOL4 is published for Fabric only, for game versions 26.2 and 26.3.

In the catalog

DOL4 (Datapack OP Level 4) is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 8,071 mods support Minecraft 26.3.

Utility mods36,990Fabric modsMods for 26.38,071

More from ap12

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Mod Menu1.14.4 – 26.3Reese's Sodium Options1.16.5 – 26.3Jade 🔍1.16.4 – 26.3Zoomify (Zoom)1.18 – 26.3FancyMenu1.12 – 26.3Controlling1.7.10 – 26.3

What the author says

Set the function-permission-level to 4 in single-player mode. This will allow you to use commands such as tick from the datapack. シングルプレイ時のfunction-permission-levelを4に変更します。 これにより、tickコマンドなどをデータパックから使用できるようになります。
ap12, on the Modrinth page

Official listing

Owner
ap12
Published
2026-06-18
Updated on Modrinth
2026-09-28
Facts verified
2026-10-15

Tags

Utility
Open on ModrinthCompare