About Legacy Fabric API
From ModrinthThe legacy fabric version of the fabric api.
Legacy Fabric API is the core library for the most common hooks and inter compatibility measures utilized by mods using the Legacy Fabric toolchain.
More information and full installation instructions can be found on the Legacy Fabric website and support can be found on the Legacy Fabric discord server.
This is SEPARATE from the Fabric loader! You need both for most mods!
Join our discord server for help: https://discord.gg/yBTpRXe
Join us on #legacyfabric on irc.esper.net
Highlights
From source dataGame versions
Supports 168 Minecraft versions, the newest being 1.12.2.
Loaders
Runs on Legacy-fabric and Ornithe.
Footprint
Rated a light load on a server.
What kind of mod it is
From the catalogLibraries & compatibility
Foundations and fixes other mods build on. Usually installed because something else needs it.
Works on a server
From source side supportModrinth lists server-side support for Legacy Fabric API as optional: it can run on a server, but isn’t required there.
Compatibility
- Game
- Minecraft
- Loaders
- Legacy-fabricOrnithe
- Runs on
- Serveroptional on the server
- Game versions
- 1.12.2 and 167 earlier
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-01Open ↗
- ✓AuthorBluCobalt, as published on Modrinth
- ✓LicenseApache-2.0Free
