AutoTag Mod (1.21.11, 1.20.1) – Automatically Populates Common Tags

Managing item and block tags across dozens of mods in a modpack is one of those tedious tasks most players never think about — until something breaks. AutoTag Mod solves this quietly in the background by scanning installed mods and automatically filling in common tags for entries that meet specific conditions. This means better inter-mod compatibility without requiring every mod author to manually tag their content. With over 2.5 million downloads on Modrinth, AutoTag has become a staple dependency in the Fabric modding ecosystem, trusted by modpack creators who need things to "just work."

Key Features

• Automatic tag population — Detects items, blocks, and other registry entries that match common tag conditions and adds them automatically, eliminating gaps left by mod developers who forget to tag their content.
• Seamless inter-mod compatibility — Ensures that recipes, loot tables, and mechanics relying on shared tags work correctly across multiple mods without manual configuration.
• Modpack-friendly design — Runs server-side and requires no player interaction. Install it once and let it handle tag conflicts behind the scenes.
• Open to suggestions — Modpack creators and developers can request new auto-tag rules via the project's issue tracker, making the mod community-driven.
• Open-source under MIT license — Full source code is available on GitHub for review, contributions, or learning.

Screenshots

How to Install

1. Download and install Fabric Loader for your Minecraft version.
2. Download Fabric API and place it in your mods folder.
3. Download AutoTag Mod for your Minecraft version from the link below.
4. Drop the AutoTag .jar file into your .minecraft/mods folder.
5. Launch Minecraft with the Fabric profile — AutoTag runs automatically with no additional setup.

Requirements

Pros & Cons

Download

What's New

• Updated mod compatibility to support Minecraft 1.20 and 1.20.1.
• Maintained backward compatibility with earlier Fabric versions (1.18.2–1.19.4).
• Continued refinement of automatic tag detection rules for the latest Minecraft registry changes.

FAQ

Does AutoTag work on servers?

Yes. AutoTag is a server-side utility mod that runs automatically when installed. It processes tags during world loading, so it works on both dedicated servers and singleplayer worlds without any client-side requirements beyond having Fabric installed.

Will AutoTag conflict with mods that already define their own tags?

AutoTag is designed to fill in missing tag entries, not override existing ones. If a mod already tags its content correctly, AutoTag simply skips those entries. This makes it safe to use alongside well-tagged mods.

Is AutoTag available for Forge or NeoForge?

Currently, AutoTag is only available for the Fabric mod loader. There is no official Forge or NeoForge version. If you need similar tag management on Forge, you may need to look for alternative solutions.

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