Nemo's Tags
by NemoNotFound
Nemo's Tags adds new item, block and entity tags that other mods and datapacks can read, so that content from different sources groups together under the same names.
What it does
The library extends how Minecraft handles custom content. Its additional tags are added to the game's internal tag system, which lets mods target items, blocks and tools by a shared label rather than by individual IDs. Modders can use the new tags to shape their logic without hard-coded lists, and players see items from separate mods work together more smoothly.
Nemo's Tags requires Fabric API and runs on Fabric, Forge and NeoForge. It is server-side only, so players join a server running it without installing anything. Its builds cover game versions 1.21.5 – 1.21.11, with 2.0 for 1.21.11 as the latest file, released under the MIT License. The project is open source, and its source code, issue tracker and wiki are public. Nemo's Mossy Blocks and Nemo's Copper depend on it.
Key features
Additional item and block tags
New tags group items, blocks and tools so that mods can refer to them with a single shared name.
Modder-friendly tag logic
Tag handling lets content from different mods be matched without hard-coded lists.
Multi-loader template
The code is structured on a CC0-licensed multi-loader template so one codebase serves Fabric, Forge and NeoForge.
Public documentation
A wiki describes the tags, and the issue tracker and source code are open to the community.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Required by 2 mods
Use cases
Cross-mod compatibility
Packs combining several mods can use the shared tags so recipes and behaviors cover items from each of them.
Mod development
Modders building content for Minecraft can reference the added tags instead of listing individual item IDs.
Who it’s for: Modpack makers, server owners who run several content mods together, and modders who want their items to work with other mods.
How it compares
Unified API is a library for Fabric and NeoForge with files for 1.21.11 – 26.3, open source under the GNU Lesser General Public License v3.0 only, and it works on either side, and neither needs it. RunicLib covers Fabric, Forge, NeoForge and Quilt for 1.20 – 1.21.1 under a custom license that is not open source, and it needs both client and server. Data Tables is a Fabric library for 1.21.7 – 1.21.8 under the MIT License, open source, and only the server needs it. Nemo's Tags is server-side only and targets 1.21.5 – 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Nemo's Tags | Fabric, Forge and NeoForge | 1.21.5 – 1.21.11 | Server-side only | 2026-01-04 |
| Unified API | Fabric and NeoForge | 1.21.11 – 26.3 | Client or server, optional | 2026-10-15 |
| RunicLib | Fabric, Forge, NeoForge and Quilt | 1.20 – 1.21.1 | Client and server | 2026-08-08 |
| Data Tables | Fabric | 1.21.7 – 1.21.8 | Server required, client optional | 2025-08-07 |
Questions
Does Nemo's Tags need Fabric API?
Do players need Nemo's Tags installed?
Which game versions does Nemo's Tags support?
In the catalog
Nemo's Tags is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 19,862 mods support Minecraft 1.21.11.
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What the author says
Nemo’s Tags is a utility mod that adds a variety of new tags to improve mod compatibility and enhance how Minecraft handles custom content. This helps ensure that items, blocks, tools, and more from different mods can work together more seamlessly. In addition to new tags, Nemo’s Tags also modifies and extends parts…
Official listing
- Modrinth page
- modrinth.com/mod/nemos-tags
- Owner
- NemoNotFound
- Published
- 2025-04-25
- Updated on Modrinth
- 2026-01-04
- Facts verified
- 2026-10-15