M0-Dev Tools

M0-Dev Tools is a client-side Fabric toolbox for Minecraft modders, builders, and technical players. It bundles overlays, HUDs, movement helpers, macros, scripting, and debugging tools into one mod.

Certain modules such as X-Ray, Freecam will require the mod to be installed on the server as well.

It was meant to be a personal project, but I decided to release it for public.

Feature overview

Visual overlays & inspectors

• Light level overlay
• Redstone power overlay
• Redstone dust update order / BUD overlay
• Slime chunk overlay
• Biome border overlay
• Chunk border overlay
• Structure bounding box overlay
• Command block overlay
• Block inspector / WAILA-style block text
• NBT info HUD
• NBT tooltips
• Shulker preview tooltips
• Entity radar / entity list
• Item pickup notifier
• ClickHUD

Building, movement & utility tools

• Xray
• Instant break
• Fast block placement
• Reach
• Inventory move
• Mouse Tweaks support
• Bridging tweaks
• Fullbright
• Held light
• Zoom
• Freecam
• Quick teleport
• Waypoints
• Hunger tweaks
• Dynamic FPS
• Minimal "WorldEdit" (accompanied by /draw)

Chat & workflow helpers

• Secondary chat
• Command history
• Message history
• Longer chat history
• Better command block UI
• UI utilities for send/delay packets, save/restore GUI state, de-sync screens, close without packet, copy GUI title JSON, and use an in-GUI command/message input field

Macros, scripting & automation

• Macro manager
• Macro workbench canvas
• Macro workbench keyboard layout
• Macro placeholders
• Groovy scripting
• Kotlin scripting
• In-game script editor
• Action runner for queued client actions such as item use, offhand use, left click, sneak, jump, drop, command execution, offhand swapping, and hotbar selection

Debugging & admin tools

• /draw for lines, boxes, circles, cylinders, spheres, selection outlines, saved shapes, listing/removing/clearing shapes, saving/loading, and the shape UI
• /getdata for item, block and entity NBT / data inspection & editing
• Watson-like CoreProtect viewer, tracers, vectors, TTL controls, synthetic test data, and teleport helpers

Tweaks module

• Hide your own effect particles
• Hide the offhand item
• Disable block breaking particles
• Disable entity rendering
• Disable Nether fog
• Disable rain effects
• Disable sounds
• Disable wall-unsprint behavior
• Angel block
• Permanent sneak
• Permanent sprint
• Disable hurt camera
• Disable view bobbing
• Disable render distance fog

Scripting

Open the scripting module with , (default) keybind.

Groovy: give yourself a diamond sword

import net.minecraft.item.Items
import net.minecraft.item.ItemStack

player.giveItemStack(new ItemStack(Items.DIAMOND_SWORD))

"Gave you a diamond sword!"

Kotlin: spawn particles around the player

import net.minecraft.particle.ParticleTypes
import kotlin.math.cos
import kotlin.math.sin

val particleManager = client.particleManager

for (i in 0 until 20) {
    val angle = Math.toRadians(i * (360.0 / 20))
    val x = player.x + cos(angle) * 1.5
    val y = player.y + 1.0
    val z = player.z + sin(angle) * 1.5

    particleManager.addParticle(
        ParticleTypes.HAPPY_VILLAGER,
        x, y, z,
        0.0, 0.1, 0.0
    )
}

"Spawned"