Community Fluid API
Community Fluid API is a from-scratch NeoForge library that stands in for the Fluid API NeoForge discontinued, so modded fluids keep working on 26.1.2.
What it does
Minecraft 26.1.2 shipped without NeoForge's own fluid implementation, which the NeoForged team retired and did not replace. Fluids added by mods then lost behavior players expect: entities did not wade through them, they did not glow, pushed nothing around, and mob pathing and conduits ignored them. Community Fluid API rebuilds that role as a community reimplementation, written from scratch for 26.1.2 and meant as a near drop-in substitute for the old Forge implementation with a few changes.
The library is a dependency for mod authors who want their fluids to function, so it has to be installed next to any mod that depends on it. Its files are published for NeoForge only, for the single version 26.1.2, and the environment is client and server, so both sides need the library. The license is Creative Commons Attribution Share Alike 4.0, and the project is not open source; the source code, issue tracker and wiki are public.
Key features
Fluid behavior rebuilt
Entities can walk through fluid blocks, fluids can glow, and fluids can push entities and mobs path around them.
Targeted methods replace isWaterLike
The deprecated isWaterLike check is replaced by more targeted methods, so fluids no longer fall back to water behavior by reusing a vanilla tag.
Required fluid tags
Fluids are matched through their required tags rather than an ignored fallback, which keeps conduits and other systems working for custom fluids.
Modeled on the old API
The library is intended as a near drop-in replacement for the discontinued Forge Fluid API, with a few extended behaviors.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Mod developers building custom fluids for NeoForge 26.1.2, and players whose modpacks include fluid-based mods that depend on this library.
Questions
Why do fluids from other mods stop working on 26.1.2?
Does Community Fluid API have to be installed on both sides?
Which loader and version does the library support?
Is the library a dependency of other mods?
In the catalog
Community Fluid API is one of 3,514 Library mods on ModsFinder, and one of 1,449 Library mods for NeoForge. 15,189 mods support Minecraft 26.1.2.
More from No_Name_Provided
Similar mods
What the author says
TL;DR: As of Minecraft 26.1, the NeoForged team has officially retired the (Neo)Forge Fluid API... and replaced it with nothing. This mod is a community-developed, from-scratch reimplemention of that API designed to make adding fluids as painless (and collision-free) as it used to be. WIP. Wonder why entities are…
Official listing
- Modrinth page
- modrinth.com/mod/community-fluid-api
- Owner
- No_Name_Provided
- Published
- 2026-06-08
- Updated on Modrinth
- 2026-09-07
- Facts verified
- 2026-10-15