AutoModpack
by Skidam
Players who join a server can receive its full modpack automatically, because AutoModpack generates one from the server's files and syncs it to each client.
What it does
On the server, AutoModpack builds a metadata file describing every file in the modpack and hosts that metadata alongside the files themselves. When a client connects, it opens a secure connection and asks the player to verify the server's certificate fingerprint before any content is placed into the client's automodpack folder.
On later launches the client checks for changes and updates the modpack in the background. Changes detected while the game is already running still require a restart. The modpack can include executable content, so the author recommends using it only on trusted servers and launching through a sandboxed launcher such as Pandora, or a launcher installed as a Flatpak package.
The mod runs on client and server, so both sides need it. It is released under the GNU Lesser General Public License v3.0 or later, and it is open source with public source code, an issue tracker and a wiki. Builds cover 1.16.4 – 26.3 across Fabric, Forge, NeoForge and Quilt, and the newest files are for 26.3.
Key features
Automatic modpack sync
The client receives the server's mods, configs and other files without manual copying, and loads them after the next game restart.
Certificate verification
Before any transfer begins, the player confirms the server's certificate fingerprint over a connection the mod establishes.
Admin file management
Server owners can manage mods, configs, resource packs and shaders through the files the mod publishes.
Compressed, hash-indexed transfers
Each modpack file is indexed by its hash and sent compressed, so unchanged files are not sent again.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
1.20.x5 of 5 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions with builds
1.16.x2 of 2 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Private server onboarding
A server owner distributes a modified modpack without asking each player to install files by hand.
Frequent modpack updates
Players stay in step with the server through background checks at launch rather than repeated manual installs.
Who it’s for: Server owners who want players to receive their modpack automatically, and players who join servers that run AutoModpack. Players should only connect to servers they trust, since the modpack can contain executable files.
Questions
Does AutoModpack have to be installed on both sides?
Which loaders does AutoModpack support?
Can a client update the modpack without restarting?
In the catalog
AutoModpack is one of 5,392 Social mods on ModsFinder, and one of 4,084 Social mods for Fabric. 8,071 mods support Minecraft 26.3.
Similar mods
What the author says
AutoModpack is a Minecraft modification designed to improve your private server modpack management. Say goodbye to the days of struggling to get everyone on the same version! This mod automatically synchronizes players with the server's modpack, making playing with friends incredibly smooth and hassle-free. (This…
Official listing
- Modrinth page
- modrinth.com/mod/automodpack
- Owner
- Skidam
- Published
- 2022-07-02
- Updated on Modrinth
- 2026-10-11
- Facts verified
- 2026-10-15