VartaPack
by stromblex
VartaPack is a client-side diagnostics tool that lets a modpack author tell whether a given instance is clean, modified, unsupported or broken.
What it does
Modpack authors set up VartaPack with files that describe the anticipated setup, the rules for mods, the pairs that conflict, the integrity checks and the support links. A section governs how reports behave. Sample configurations and a usage guide live on GitHub. The tool inspects the local setup, flags frequent configuration errors and writes structured reports that can be passed along when help is requested.
Flagged problems show up as a notice at startup and on a screen inside the game. The tool sorts the running instance into a category, and a player can copy the generated support report in a single click. Reports are built on the local machine. Logs, mod lists, usernames and file paths are never sent off automatically, and private paths and usernames are masked where possible. Sharing a report is always a choice made by the player.
The tool checks the Minecraft version, mod loader, Java version and allocated memory, along with required, recommended and blocked mods and any extra mods. VartaPack runs on the client only and is published for Fabric, Forge and NeoForge across 20 release versions, 1.18.2 – 26.2. It is open source under the MIT License.
Key features
Instance classification
The current instance is sorted into a category so an author can see at a glance how the setup stands.
Startup and in-game alerts
Detected issues are shown in a startup notification and on an in-game issues screen.
One-click support report
A generated report can be copied with one click and sent to the modpack author.
Rule-based configuration
Expected environment, mod rules, conflict rules and integrity checks are defined in configuration files.
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x12 of 12 versions with builds
1.20.x2 of 2 versions with builds
1.19.x1 of 1 version with builds
1.18.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Modpack Authors is a Fabric, Forge and NeoForge mod for 1.16.5 – 1.21.1, client-side only, and open source under the MIT License. Modpack Configuration Checker is client-side only for Fabric and Forge across 1.12.2 – 1.21, and it is licensed under the Apache License 2.0 without being open source. Echo Reload is client-side only for Fabric, Forge and NeoForge across 1.20.1 – 1.21.11, under the MIT License without being open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| VartaPack | Fabric, Forge and NeoForge | 1.18.2 – 26.2 | Client-side only | 2026-06-18 |
| Modpack Authors | Fabric, Forge and NeoForge | 1.16.5 – 1.21.1 | Client-side only | 2026-05-10 |
| Modpack Configuration Checker | Fabric and Forge | 1.12.2 – 1.21 | Client-side only | 2024-08-27 |
| Echo Reload | Fabric, Forge and NeoForge | 1.20.1 – 1.21.11 | Client-side only | 2026-05-22 |
Questions
Does VartaPack need to be installed on the server?
Are player logs uploaded automatically?
Can VartaPack be used alongside PackPing?
In the catalog
VartaPack is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 13,894 mods support Minecraft 26.2.
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What the author says
A lightweight diagnostics, integrity, and support-report tool for Minecraft modpacks. VartaPack helps modpack authors understand whether a player's instance is clean, modified, unsupported, or broken. It validates the local environment, detects common setup problems, and generates structured reports that are easy to…
Official listing
- Modrinth page
- modrinth.com/mod/vartapack
- Owner
- stromblex
- Published
- 2026-05-24
- Updated on Modrinth
- 2026-06-18
- Facts verified
- 2026-10-15