Fabric API is the core library for the most common hooks and intercompatibility measures utilized by mods using the Fabric toolchain
More infomation and full installation instructions can be found on the Fabric website and support can be found on the Fabric discord server.
This is SEPARATE from the Fabric loader! You need both for most mods!
Keep in mind the project requires the Fabric mod loader!
Whenever I try to load the game with the new API 24.2 I get this error message
This goes away if I switch back to 24.1 and game loads normally.
In reply to ReaZonoZaeR:
Either you need Fabric Loader 10.5 which you can get via the installer here: https://fabricmc.net/use/ or it is a problem besides just the loader. My guess is that it's the loader version you have by the looks of things.
In reply to SuntannedDuck2:
Thanks, I didn't realize Fabric had updated also. Yeah, running the installer again and updating fabric fixed everything right up. Now I know what to do if I get that error again in the future. Might be worth looking into a way to let people know when fabric loader updates, unless there is one and I just don't know about it also which is possible. I just started modding Minecraft earlier this month afterall.
In reply to ReaZonoZaeR:
No Problem. I just check with my MultiMC Fabric instances every so often (and on the odd times a mod doesn't work for me I check that I have the latest loader and Fabric API, as I review mods & update wikis) to see and then I update the loader build listing on the FTB Wiki.
That's how I know to keep track.
There isn't an automated way (or like having a Fabric API Curseforge notification) or warning like Java does to let you know it needs updating as far as I know but I think that would be good idea. You'd have to ask in the Fabric Discord about something like that, I wouldn't know.
I know they have done jars to check for mod updates before (boostrap installers for their ModFest modpacks) but that's about it I think. I don't make mods either so I can't give any information about the modding experience. I have tried but I didn't get far lets just say.
Welcome to modding. :) Maybe I could review some of your mods in the future.
In reply to SuntannedDuck2:
I'm using Fabric Loader 213 and both of the last 2 updates (24.2 and 24.3) have caused that issue for me..
Here's the error
[10:45:03] [ForkJoinPool-1-worker-2/WARN]: "fabric.mod.json" from mod autoconfig1u did not have "schemaVersion" as first field.
[10:45:03] [main/FATAL]: A critical error occurred
net.fabricmc.loader.discovery.ModResolutionException: Could not find required mod: fabric-command-api-v1 requires {fabricloader @ [>=0.10.5]}
at net.fabricmc.loader.discovery.ModResolver.findCompatibleSet(ModResolver.java:170) ~[fabric-server-launch.jar:?]
at net.fabricmc.loader.discovery.ModResolver.resolve(ModResolver.java:609) ~[fabric-server-launch.jar:?]
at net.fabricmc.loader.FabricLoader.setup(FabricLoader.java:206) ~[fabric-server-launch.jar:?]
at net.fabricmc.loader.FabricLoader.load(FabricLoader.java:196) [fabric-server-launch.jar:?]
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:127) [fabric-server-launch.jar:?]
at net.fabricmc.loader.launch.knot.KnotServer.main(KnotServer.java:26) [fabric-server-launch.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_261]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_261]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_261]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_261]
at net.fabricmc.loader.launch.server.FabricServerLauncher.launch(FabricServerLauncher.java:61) [fabric-server-launch.jar:?]
at net.fabricmc.loader.launch.server.FabricServerLauncher.setup(FabricServerLauncher.java:105) [fabric-server-launch.jar:?]
at net.fabricmc.loader.launch.server.FabricServerLauncher.main(FabricServerLauncher.java:49) [fabric-server-launch.jar:?]
Caused by: net.fabricmc.loader.util.sat4j.specs.ContradictionException: Creating Empty clause ?
at net.fabricmc.loader.util.sat4j.minisat.constraints.cnf.Clauses.propagationCheck(Clauses.java:117) ~[fabric-server-launch.jar:?]
at net.fabricmc.loader.util.sat4j.minisat.constraints.cnf.Clauses.sanityCheck(Clauses.java:97) ~[fabric-server-launch.jar:?]
at net.fabricmc.loader.util.sat4j.minisat.constraints.MixedDataStructureDanielWL.createClause(MixedDataStructureDanielWL.java:81) ~[fabric-server-launch.jar:?]
at net.fabricmc.loader.util.sat4j.minisat.core.Solver.addClause(Solver.java:401) ~[fabric-server-launch.jar:?]
at net.fabricmc.loader.discovery.ModResolver.findCompatibleSet(ModResolver.java:168) ~[fabric-server-launch.jar:?]
... 12 more
In reply to adamc1972:
I tried myself as I haven't used the Vanilla launcher in a while (I use MultiMC or Twitch more) and tried the 0.10.5 build 213 on it's own (no mods) and it seemed to work.
Testing with just Fabric API 24.3 and no mods worked (as I don't know if mods have updated to it yet).
By the looks of the crash report though (and I'm not an expert at crash reports, I know bits and pieces) I assume it's something to do with the Fabric Server jar and the Fabric API or Auto Config mod, and as I can see your trying with a server jar there isn't anything I can do as it out of my area.
I know nothing about Fabric server environments, that you'd have to ask on the Discord https://discord.gg/v6v4pMv for or check the server installation instructions here: https://fabricmc.net/wiki/install.
That or it's a mod that isn't serverside/elements from it that's conflicting. Again I have no idea I can only assume.
for some reason the java file won't open, when i double click it it doesn't pop up a window, help
In reply to Ultbee:
The Fabric API is neither a mod installer nor an executable file. The Fabric API is to be treated like a mod and must be added to the .minecraft/mods/ folder. You can download the Fabric Loader from the official website of the Fabric Project.
In reply to Ultbee:
Fabric API is a mod, think of it like any other library/api mod they go in the mods folder.
Fabric API is not a jar file to use like Optifine.
The loader or installer is what your after, and can be found here: https://fabricmc.net/use/.
You can install any version of the loader and have it work on any 1.14 to 1.16.3 release or snapshot version unlike Forge where there is separate builds so going with the latest loader version will just work if your using 1.14.4 or 1.16.3.
The API however you need for separate versions just like any mod.
Hey, can there be a 1.8.9 version? I am a 1.8.9 player more than 1.14-1.16.3. Even tho i like all versions I would like a 1.8.9 version so i could play on it for multiplier servers. Is 1.8.9 version planned?
In reply to dogememes:
There is a 1.8.9 version called Legacy Fabric. You can find more here: https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/mods-discussion/3028341-legacy-fabric-discussion-thread-for-versions and via the Discord here: https://discord.gg/yBTpRXe
Just keep in mind that Fabric (Legacy or regular) mods do not work with Forge. That and Fabric mods will not work on Legacy Fabric as they are differently designed due to the differences between 1.8.9 and 1.14+ versions.
There also is very few mods for Fabric on 1.8.9 (in short the ones you might use are Discord ones, a item/block cheating one, chromahud I guess, and that's just about 1/3 or half the mods for it so far, it's that early because they are still working on the Framework of it and adding more possibilities like fluids, biome and more to allow more for modders to make those types of mods).
I have videos (showcasing the mods at the time and tutorials for how to install Legacy Fabric)/list of the mods on the forum and the FTB Wiki page I made which you can view here: https://ftb.gamepedia.com/Legacy_Fabric
If you need any help just ask.
does it works with forge?
In reply to lazytnews24:
Fabric and Forge are not compatible. Liteloader and other modloaders in the past have been compatible alongside Forge though. (Yes Forge has never been the only modloader, there has always been 2 per period of time, Liteloader, Rift and Risugami existed but Forge has been around the most).
The closest you can get is Patchwork, a means to have Forge mods work on Fabric (still for 1.14.4 I think and only a small amount of mods support it, a few major like Biomes O' Plenty work but not many mods support it last I checked).
Fabric has many mods (across multiple categories) on it if you want to try it out (as a reviewer of 90% of the mods on it daily) but yeah they won't likely be compatible due to differences between the code and the teams of both hating each other (Fabric exists because the Mod Devs got sick of the Forge team's ways of doing things in 1.13 [code and communication with the Forge team], so Fabric gives them a way to make mods still).
Why when i put Fabric API in virus total it says its a adware lmaoo
In reply to zavenz_:
Do it do that for other jar files? I'd assume it would. Either way, Fabric API is harmless. Just put it in the mods folder along with the mods you want after installing Fabric Loader.
Okie, so I'm trying to get all of this working but for some reason when I try to get into game its fine until i hit load world, it will start loading and go anywhere from 0-100% loaded, but will never fully load in to the game/world. To get this to go away i normally have to task manager and close it and then the minecraft client will pop up saying game crashed and that an unexpected error has occurred. I'm using everything for 1.14.4 and I know I have the right versions. Currently in my mod folder I have fabric api, optifabric and optifine. I'm also using mizuno's, ghoulcraft and jadens invidsible item frames as resource packs. I can get a log if needed, but ill have to put it in multiple replys because its literally over 1,000,000 characters.
In reply to officialdarcyrayne:
The Mizuno's, Ghoulcraft and Invisible Item Frames (there may be one of this type that is for Fabric but the others I'm not familiar with) don't ring a bell to me as Fabric mods. And I document mods for both modloaders daily. Forge and Fabric are not compatible so you'd have to remove them (if you try to rename the jar files with .disabled are the .jar they won't be loaded by the game and you don't have to delete them) or use them in a Forge environment.
If you could show me what you mean with a crash report or a link to the mods your referring to that would be helpful. Some Fabric mods on Planet Minecraft or Github or elsewhere like the Replay mod I don't know enough about, most are on Curseforge so I'm more familiar with them so if they are for Fabric I'd have to check them out and see.
In reply to SuntannedDuck2:
The three that you listed aren't mods, they are all resource/cit packs and are supposed to work with fabric. I ran the game with just optifine and optifabric and it worked great. Both the fabric loader and optifine were working and I had no issues. The issues only started happening when I would put fabric api in my mods folder and try to load the game. So I know that's where the problem is coming from. I will post the log I have in separate parts since its so long. These are the 3 resource packs I was talking about.
https://mizunomcmemo.blogspot.com/p/resourcepack.html
https://www.ghoulcraft.com/
https://www.planetminecraft.com/texture-pack/invisible-item-frames-1-14-1-15/
I have also decided to turn the log into a google doc since its so big and would take ages to copy and paste so here is a link for that.
https://docs.google.com/document/d/1lMYeDzj8d0cbNvJuwhdtn6b0wG4VcL5OVKVYD3wwp1c/edit?usp=sharing
Tengo un problema de carga de pieles de Tlauncher, ¿cómo puedo usar pieles si no es compatible conmigo de Fabric
In reply to psicarix:
TLauncher is a hacked launcher, we can't help you as we only support legal ones.