Vtil

Vtil adds advanced Valkyrien Skies APIs that provides extra compatibility with other mods

1.1K Downloads

fabricforgelibrary

Rent Server with this Mod

About this Mod

Vtil is a library mod that provides multiple useful APIs related to VS.

Current API includes:

Assemble API
- Assemble ships with extra mod compatibility (e.g. assemble Create contraption)
- /vtil assemble command
Connectivity API
- Provides extra information about block connectivity on ships, which can then be used in Assembly and/or ship split.
- By default wraps vanilla canSurvive, mod makers can implement IBlockAnchor and define their own block connection.
Teleport API
- Teleport valkyrien ships to another dimension with conserved velocity and omega.
- Teleport an entity and its passengers all together to another dimension, with extra mod compatibility.

Check javadoc for more informations.

Available Versions

Vtil 0.5.8release

MC 1.20.1forge

January 5, 2026

Vtil 0.5.8release

MC 1.20.1fabric

January 5, 2026

Vtil 0.4.1release

MC 1.20.1forge

November 22, 2025

Vtil 0.4.1release

MC 1.20.1fabric

November 22, 2025

Vtil 0.3.2release

MC 1.20.1forge

November 10, 2025

How to Install Vtil on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.1).

Install Mod

Open the mod browser in the dashboard and search for "Vtil". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforge

Minecraft Versions

1.20.1

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Vtil server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.1). You can switch loaders with one click in the panel.

Is Vtil compatible with fabric and forge?

Vtil officially supports fabric, forge for Minecraft 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Vtil – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Vtil consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.