Conium
by cao-awa
Conium is a Fabric scripting framework that lets players build complete mods using datapacks and scripts rather than Java code.
What it does
Conium provides a datapack-based script framework for modern Minecraft, so features can be written without Java coding. Its scripting system can run entirely on the server side, and with the full Conium feature set a client has to synchronize datapacks and scripts with the server before they work.
The framework supports bedrock scripting APIs, with TypeScript grammar and MoLang support built on that base. Its scripting requires Fabric API and Fabric Language Kotlin, which must both be installed alongside it. Conium is published for Fabric only, and the project states that NeoForge support cannot be completed because of a conflict between the secure jar handler and Kotlin, so no NeoForge files exist.
Key features
Datapack scripting
Scripts placed in datapacks let creators add behavior to a world without writing Java code.
Server-side execution
The scripting system runs on the server, and clients receive synchronized datapacks and scripts for the full feature set.
Bedrock-style script APIs
The bedrock scripting APIs are available, with TypeScript grammar and MoLang expressions supported.
Startup console messages
On launch, the console shows a random Hitokoto chosen from a list, which accepts only English and Japanese entries.
Gallery
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 2
Use cases
Scripted mods without Java
Creators can assemble a complete mod from datapacks and scripts, using the framework's bedrock-style APIs instead of compiled code.
Server-hosted behavior
Server owners can run scripted logic on the server while players join with the same datapacks and scripts synchronized to them.
Who it’s for: Datapack and script authors who want to build features without Java, and server owners who host scripted content. Contributors are asked to discuss ideas with the core team before opening pull requests, since unannounced pull requests are declined.
Questions
Does Conium need Fabric API and Fabric Language Kotlin?
Does Conium work on NeoForge?
Do clients need Conium for scripted features?
In the catalog
Conium is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 8,071 mods support Minecraft 26.3.
More from cao-awa
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What the author says
Conium is a datapack and script framework for modern Minecraft, it provides very diverse features without Java coding, Conium lets you complete your mods only using the datapacks. The full Conium feature is currently as 'on client' mode, the server needs to synchronize the datapacks and scripts to client but are not…
Official listing
- Modrinth page
- modrinth.com/mod/conium
- Owner
- cao-awa
- Published
- 2024-10-31
- Updated on Modrinth
- 2026-10-15
- Facts verified
- 2026-10-15