Quickstart
Install Epsilon on Paper 26.1+ in two minutes with zero config tuning required.
How Epsilon protects your server
Epsilon works in two parts that protect your players together without adding lag to your main server thread.
- The plugin (Free). Runs directly on each Paper server. It simulates the vanilla game for every player, checks movement, reach, inventory actions, and packet timing, applies smooth corrections and silent mid-fight mitigations, and connects to a free live web dashboard.
- Epsilon Cloud (Optional). Runs machine learning and statistical analysis off your hardware to catch kill auras, aimbots, and cheats that abuse artificial latency without punishing high ping or lag spikes.
Before you start
| Requirement | Minimum version | Where it goes |
|---|---|---|
| Paper | 26.1 | Each backend server |
| Java | 25 | Host runtime |
| PacketEvents | 2.14.0+ | plugins/ folder on each Paper server |
| ViaVersion (if mixed versions join) | 5.12.1+ | Paper backend only (never on the proxy) |
Install on Paper
Download the latest release
Download epsilon.jar from https://dl.epsilon.ac/latest or fetch it straight onto your host.
Drop it into plugins/
Place epsilon.jar alongside PacketEvents (2.14.0+) in the plugins/ folder of each Paper server. If you run Velocity or BungeeCord, install Epsilon on each Paper backend rather than the proxy.
Start your server
Epsilon protects players immediately with default settings. Future updates download and stage themselves automatically between restarts.
Download on Linux or macOS
curl -L -o plugins/epsilon.jar https://dl.epsilon.ac/latestCheck that it is running
Once your server boots, run the info command in your console or in game as an operator to confirm the active version and connection state.
Verify in game or console
/epsilon info