Config Editor

Edit your mod config files without ever leaving the game.

Config Editor is a Fabric client-side mod that gives you a full-featured text editor, a visual JSON editor, an AI assistant, and a block info overlay — all accessible with a keybind while you play.

Features

📝 In-Game Config Editor

Open any config file from your .minecraft/config folder directly inside the game. No more alt-tabbing to Notepad or VS Code.

Syntax highlighting for JSON, TOML, YAML, Properties, CFG, and plain text
Line numbers, horizontal and vertical scrollbars
Find & Replace (Ctrl+F) with previous/next navigation
Auto-save with file locking — retries up to 3 times if the file is busy
Unsaved-changes warning when you try to close
Backup button to snapshot your entire config directory before editing
Open Folder button to reveal the config directory in your file manager
Dark / Light / Auto theme with a toggle button

🖱️ Visual JSON Editor

Switch to a point-and-click interface for JSON files. No need to remember syntax.

Add, rename, delete, and reorder fields
Change value types (String / Number / Boolean / Null / Object) with one click
Nested object support with expand/collapse
Scroll through large files with up/down buttons

🤖 AI Chat Assistant (requires Ollama)

Ask an AI about your config files without leaving the game.

Loads a file or entire folder into the conversation with one click
Uses a local Ollama server (default: localhost:11434, model: tinyllama)
Server availability check on open — shows a clear offline message if Ollama is not running
Scrollable chat history

� Block Info Overlay

A Jade/WTHIT-style HUD element shown at the top of the screen while you play.

Displays the block name and registry ID (e.g. minecraft:stone) of whatever your crosshair is pointing at
Shows the block's item icon next to the name
Semi-transparent background with a clean border
Only visible in-game — disappears when any screen is open
Fully toggleable via the config file (show_block_overlay)

📦 NBT Viewer

Point your crosshair at a block entity or entity and press the NBT key to open a viewer showing its NBT data as formatted JSON. Save it to saved_nbt/ with a custom filename.

🔌 Plugin API

Other mods can extend the editor by implementing the ApiEntrypoint interface. Built-in plugins include:

Plugin What it does Undo/Redo Tracks edit history Text Stats Shows character, word, and line count Date/Time Display Shows the current time in the editor toolbar Auto Bracket Completion Automatically closes (, [, {, "

Manage which plugins are active from the Plugins button inside the editor.

⚡ Performance Optimisations

GC hint on world join/leave — triggers a garbage collection pass before the new world starts allocating memory, reducing the RAM spike that causes join-world lag. Frees hundreds of MB in practice.
Particle clear on level set — drops stale particle objects from the old world before the new one loads.
Config is read from disk at most once every 2 seconds, not on every frame or keystroke.

Installation

Install Fabric Loader and Fabric API
Drop config_editor-*.jar into your mods/ folder
Launch the game

Requirements:

Minecraft 26.1
Fabric Loader ≥ 0.18.2
Fabric API
Java ≥ 21

The AI Chat feature additionally requires Ollama running locally with a model pulled (e.g. ollama pull tinyllama).

Usage

All three keybinds are unbound by default. Assign them in Options → Controls → Gameplay.

Keybind Action Open Editor Opens the config file editor Open AI Chat Opens the AI chat assistant NBT Display Opens the NBT viewer for the targeted block/entity

Config File

The mod's own settings are stored at .minecraft/config/editor_config.json and are editable both in-game and with any text editor.

{ "readonly_mode": false, "hint": true, "theme": "DARK", "doRenderBackground": false, "doSuggestions": true, "show_block_overlay": true } Key Type Default Description readonly_mode boolean false Prevent editing files (view-only mode) hint boolean true Auto-close brackets and quotes theme string "DARK" Editor theme: DARK, LIGHT, or AUTO doRenderBackground boolean false Draw a themed background behind the editor doSuggestions boolean true Show autocomplete suggestions while typing show_block_overlay boolean true Show the block info HUD overlay

For Mod Developers — Plugin API

You can add custom behaviour to the editor by implementing ApiEntrypoint and registering it via the Fabric entrypoint system in your fabric.mod.json:

"entrypoints": { "config_editor": [ "com.example.yourmod.YourEditorPlugin" ] } public class YourEditorPlugin implements ApiEntrypoint { @Override public void init() { } @Override public void renderButton(GuiGraphicsExtractor context, int mouseX, int mouseY, float delta) { // Draw custom HUD elements over the editor } @Override public InteractionResult onType(int keyCode, int scanCode, int modifiers) { // Intercept keystrokes — return FAIL to consume the event return InteractionResult.PASS; } }