Seam
by dannytaylor
Seam is a Fabric library from dannytaylor that bundles shared classes, resource helpers and logging utilities for other mods to build on.
What it does
Seam collects shared classes that other mods can depend on instead of copying their own. It covers common functions, a mod data class that stores the mod id and name and creates a logger, and a logging class that sends messages at info, warn, error and debug levels. Developers who want to see how to use it are pointed toward the source code, because the written description is short.
Seam holds no server-only registries, so it is aimed at mod developers rather than at server content. Its event helper wraps onInitialize calls, logging what is initializing and catching and logging any errors thrown by a runnable.
Seam is built for Fabric, with files for 1.21.11 only, and is released under the GNU Lesser General Public License v3.0 only, so the code is open source. Fabric API is required. Players usually do not need to install Seam themselves, since most mods bundle it, but it can be installed alongside Fabric to run the most up-to-date copy, and Luminance is one of the mods that depends on it.
Key features
Shared mod data class
A mod data class stores the mod id and name and creates a logger for the mod.
Logging utility
Messages go to the logger at info, warn, error and debug levels, with arguments for the mod, a message and an object list.
Initialization event helper
The onInitialize helper logs each initialization step and catches and logs errors from the runnable it runs.
Custom mod menu badge example
Source examples show how to register a custom badge and the language keys its text needs.
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 1 mod
Use cases
Building a mod on Seam
A developer can depend on Seam for logging and initialization helpers instead of writing them again.
Registering a menu badge
The example code shows how a mod adds a badge to its entry in the mod menu.
Who it’s for: Mod developers who want shared logging, initialization and mod data helpers on Fabric 1.21.11, and anyone reading the examples for how these helpers are used.
Questions
Does Seam need Fabric API?
Do players need to install Seam?
Which mods depend on Seam?
In the catalog
Seam 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.
More from dannytaylor
Similar mods
What the author says
If you are a player, you shouldn't need to install this, unless a mod has asked you to. Most mods that use Seam should have it bundled; You can still install Seam alongside, and Fabric will use the most up-to-date one. The following information is for mod developers, to help them understand how to use Seam.
Official listing
- Modrinth page
- modrinth.com/mod/perspective_seam
- Owner
- dannytaylor
- Published
- 2026-05-14
- Updated on Modrinth
- 2026-07-22
- Facts verified
- 2026-10-15