
Plans API 1.10.2, 1.9.4 provides modders a very flexible API to include in their own mods that allows them to customize the generation of instant structures. Plans uses a rules-based engine to generate Minecraft structures. A JSON file (*.plan.json), called a Plan contains all the properties and rules used to construct a particular structure. The Plan file can be very simple and straight-forward to a very complex set of Plans that substitutes blocks, adds support rules, connectors, conditions, spawners and chests.

Features:
- Rules-based generation
- Easy to read and modify JSON files
- Caching System for quicker access and rendering
- In-memory Database for Plan grouping and categorizations. No more need for complex directories to organize files.
- Build Sets! Group Plans together to form larger structures. Swap components or use the same component multiple times.
- Structural Support Rules. Blocks can be set to either provide support or require support or both. If the block doesn’t receive enough support, it is not built. Great for creating ruins and/or dungeons.
- Conditional Rules. Block construction if based on conditions of existing world blocks. Ex. If world block is water, build stone brick, else don’t build block at all.
Plans API 1.10.2, 1.9.4 Download Links
For Minecraft 1.8.9
For Minecraft 1.9.4
For Minecraft 1.10.2
- Edition: Minecraft Java
- File type: .jar
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as 212460.mcaddon
- Download size: 3.0 MB
- Download link checked 27 Jul 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.