Summary

An IDE-style native NeoForge editor and inspection toolkit for command blocks and chat commands.

Description

Command Block Studio replaces the vanilla command block screen with a focused command development workspace for map makers, server maintainers and technical creators.

Editor features

Multiline command editing with stable wrapping and scrolling
Line numbers, syntax highlighting and exact error navigation
Brigadier-backed completion from the connected world or server
Quick documentation for commands, parameters and candidates
Component, item data-component, particle, block, item, enchantment and player assistance
Search/replace, command templates, placeholders, undo/redo and bracket matching
Ordered workspace tabs for individual and chained command block
Command block item tooltips can show wrapped command text, a second-line shared annotation and available edit metadata.
A configurable work-mode key, defaulting to Alt+Tab, displays a command panel with shared annotations in front of the targeted command block; a marked vanilla spyglass works as a handheld scanner.
The editor can save and run-test the current command block once.
Entering / in chat opens a compact command assistant with completion, documentation and visual previews.
Long-command spacing, wrapping, cursor placement and overlay layout have been corrected.

Installation

The mod can be installed on the client, server or both:

Client only: full editor, chat assistant, completion, documentation and local visual tools.
Server only: vanilla clients can still join normally.
Both sides: shared comments, ten-entry edit history, rollback, run-test and other negotiated features.

Client and server versions do not need to match exactly. Network-assisted features are enabled independently when both sides expose a compatible interface.

Command Block Studio is built with native NeoForge APIs. It does not depend on Fabric API, Architectury, Sinytra Connector or another loader compatibility layer.

1.1.0 Changelog

Added

Command excerpts and last-edit metadata for copied command block items.
Configurable in-world work mode with a command block projection.
One-click command block run testing.
Chat command assistant with visual block, item, particle and player candidates.

Fixed

Long-command spaces no longer collapse visually.
Wrapped command mouse selection and caret placement now remain aligned.
Completion and documentation overlays avoid the bottom parameter/status area.
Vanilla chat completions no longer remain behind the Studio editor, and redundant hover documentation is hidden while the right-hand panel is visible.
Clicking transient Brigadier completion results no longer crashes, and the multiline chat editor receives keyboard focus immediately.
Quoted-content replacement no longer overlaps completion ghost text.
Studio icons no longer render enlarged or cropped on Minecraft 1.21.4 and 26.2.

Networking

Optional client and server installations remain supported.
Different client/server mod versions can connect.
Unsupported shared features are hidden or disabled instead of rejecting the connection.

File display names

Command Block Studio 1.1.0 for Minecraft 1.20.4 (NeoForge)
Command Block Studio 1.1.0 for Minecraft 1.21.1 (NeoForge)
Command Block Studio 1.1.0 for Minecraft 1.21.4 (NeoForge)
Command Block Studio 1.1.0 for Minecraft 26.2 (NeoForge)

Upload fields

Field	Value
Release date	2026-07-25
Release type	Release
Mod loader	NeoForge
Environment	Client optional / Server optional
License	MIT
Java	17 for Minecraft 1.20.4; 21 for 1.21.1 / 1.21.4; 25 for 26.2

Build requirements

Minecraft	NeoForge	Java	File
`1.20.4`	`20.4.167`	17	`command_block_studio-1.1.0-1.20.4-NeoForge.jar`
`1.21.1`	`21.1.217`	21	`command_block_studio-1.1.0-1.21.1-NeoForge.jar`
`1.21.4`	`21.4.121`	21	`command_block_studio-1.1.0-1.21.4-NeoForge.jar`
`26.2`	`26.2.0.10-beta`	25	`command_block_studio-1.1.0-26.2-NeoForge.jar`