CurseForge · Minecraft mod

CompatScope

Modpack diagnostics, runtime analysis, simulation, change tracking and validated SAFE compatibility fixes.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which CompatScope release should I use?

Updated today

Latest stable file CompatScope-NeoForge-1.21.1-1.0.22.jar

Game version 1.21.1

Loader NeoForge

CompatScope-NeoForge-1.21.1-1.0.22.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is CompatScope required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say

Dedicated server Source doesn’t say

Loader for this release NeoForge

Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does CompatScope-NeoForge-1.21.1-1.0.22.jar need?

CompatScope-NeoForge-1.21.1-1.0.22.jar. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add CompatScope without breaking your instance.

Built for CompatScope-NeoForge-1.21.1-1.0.22.jar. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use CompatScope-NeoForge-1.21.1-1.0.22.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
02
Bring the mods it needs

This file does not list any required mods. Do not add a library just because a different file uses it.
03
Put it on the correct side

The project page does not say whether this file belongs on the client, dedicated server, or both.
04
Pick the file you checked

Use the “Get this file” button beside CompatScope-NeoForge-1.21.1-1.0.22.jar. It opens that exact file at the source.

About this project

What does CompatScope add?

CompatScope(F8 in game) helps you inspect and troubleshoot large modpacks. Run a scan to find recipe conflicts, resource overrides, dependency problems and runtime issues. You can inspect what caused a problem, search through modpack data, simulate removing a mod, and keep track of changes between scans.

Features
• Static and runtime diagnostics
• Recipe and resource conflict detection
• Dependency analysis
• Search across mods, recipes, tags, resources and other objects
• Dependency graph
• Mod removal simulation
• Change tracking
• HTML and JSON reports
• Fix preview and history
• SAFE compatibility fixes
• Fix verification and rollback

SAFE fixes
CompatScope does not modify the original mod JARs.
When a problem can be fixed safely, CompatScope generates separate compatibility data and lets you review the change before applying it.
If a fix cannot be verified as safe, it stays manual or requires your choice.

Changes
CompatScope keeps a baseline of your modpack and shows what was added, removed or changed.

Simulation
You can check what may be affected by removing a mod without actually removing it.

THE FABRIC VERSION IS CURRENTLY UNDER REVIEW

Project description from CurseForge.

Pick your setup

CompatScope by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

1 available setups

Minecraft version

1.21.1

1 loader build

NeoForge CompatScope-NeoForge-1.21.1-1.0.22.jar 5 stable files · 7 total · 29 Sept 2026

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files