
Modrinth · Minecraft mod
Cobweb
Crystal Nest API
Quick answer
Which Cobweb release matches 1.21.4 Fabric?
Cobweb 1.4.0 targets 1.21.4 with Fabric. Installation on the client is optional. Installation on the dedicated server is optional. 1 required mod needs a matching file.
Where it goes
Is Cobweb required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Cobweb 1.4.0 need?
1.4.0 on 1.21.4 Fabric. Every mod below is checked against that same setup.
Install Fabric API first, but 1 required mod has no matching file for this setup. Do not mix loader builds to force a match. 1 comes through another mod in the chain.
1 extra mod was pulled in by another dependency. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Cobweb without breaking your instance.
Built for Cobweb 1.4.0 on 1.21.4 Fabric. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.4.0. It targets 1.21.4 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API first, but 1 required mod has no matching file for this setup. Do not mix loader builds to force a match. 1 comes through another mod in the chain.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.4.0. It opens that exact file at the source.
About this project
What does Cobweb add?

📝 Description
Cobweb is a lightweight, modular API designed to simplify Minecraft mod development across multiple loaders.
It provides a Unified Configuration System and a Unified Registering System, both available directly in the common module. These systems help you abstract away the differences between loaders, so you can focus on writing clean, maintainable, and reusable code — not boilerplate.
Cobweb is the shared modding API used across all Crystal Nest projects.
📚 Want to dive deeper? Check out the full Wiki.
✨ Features
Whether you're developing for Fabric or NeoForge, Cobweb helps unify your modding workflow. Use it as the base for your multi-loader projects or as a dependency to simplify your architecture!
🔄 Common (All loaders):
- ✅ Unified Configuration System — write your configs once, load them everywhere
- ✅ Unified Registering System — abstract away loader-specific registration
- 🔍 Simple API to retrieve in-game IDs
- 📦 Create and register dynamic resource packs (experimental)
- 📦 Create and register built-in (static) resource packs
- 🌀 Dynamic Block Entity for mutable sets of blocks
Fabric only features:
- 📝 Eased registering system.
NeoForge only features:
Currently none.
📜 License and right of use
Feel free to use this mod for any mod, modpack, or video, just be sure to give credit and possibly link here.
This project is published under the Crystal Nest Community License v1.
❤️ Support us
Project description from Modrinth.
Pick your setup
Cobweb by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
2 loader builds26.1.1
2 loader builds26.1
2 loader builds1.21.11
2 loader builds1.21.10
2 loader builds1.21.8
2 loader builds1.21.7
2 loader builds1.21.6
2 loader builds1.21.5
2 loader builds1.21.4
2 loader builds1.21.3
2 loader builds1.21.1
2 loader buildsShowing the newest 12 of 19 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Cobweb versions and loaders
1.4.0
cobweb-fabric-1.21.4-1.4.0.jar
4 Nov 2025
1.3.3
cobweb-fabric-1.21.4-1.3.3.jar
7 Mar 2025
1.3.2
cobweb-fabric-1.21.4-1.3.2.jar
12 Feb 2025
1.3.1
cobweb-fabric-1.21.4-1.3.1.jar
15 Jan 2025
1.3.0
cobweb-fabric-1.21.4-1.3.0.jar
16 Dec 2024
Looking for an older file? The official Modrinth project page is in Resources.







