Compatibility

Server Software

Loader	Supported	Notes
Paper	✅ Recommended	Fully supported. Best Log4j integration.
Purpur	✅ Recommended	Fully supported and tested.
Spigot	✅ Supported (1.8.8+)	Fully supported, including AI Chat Moderation — no Paper required.
CraftBukkit	✅ Supported (1.8.8+)	Same support level as Spigot.
Folia	✅ Supported	TickMonitor is automatically disabled (Folia handles its own watchdog). All other features work.
Velocity	✅ Proxy features	Same Solver.jar: relay, network-wide AntiVPN, and integrity checks. See Proxy Networks.
BungeeCord	✅ Proxy features	Same jar, same proxy features. See Proxy Networks.
Waterfall	✅ Proxy features	Same jar, same proxy features. See Proxy Networks.
Forge / Fabric	❌ Not supported	Mod loaders; do not use the Bukkit API.
Sponge	❌ Not supported	Uses the SpongeAPI, not Bukkit.

Folia Support

AbsoluteSolver is Folia-Aware. When running on a Folia server, the plugin automatically detects the multithreaded environment and disables the TickMonitor to prevent conflicts — since Folia has its own regional Watchdog system. All other diagnostics (console monitoring, crash analysis, post-mortem) remain fully functional.

Minecraft Versions

Version	Status	Notes
26.1 – 26.3	✅ Supported	Mojang's new version numbering. Tested on Paper 26.3 (Java 25).
1.21.x	✅ Supported	Runs on Java 21, fully compatible.
1.20.x	✅ Supported	Primary development target. Fully tested.
1.13.x – 1.19.x	✅ Supported
1.8.8 – 1.12.x	✅ Supported	Minimum supported version. Some Paper-only conveniences (e.g. hiding a vanished player from the server list) aren't available here — there's no vanilla equivalent — but every other feature works the same.
1.7.10 and below	❌ Not supported yet	Planned, but not buildable/available yet.

Java Version

Solver is compiled targeting Java 8. It will run on any JVM version 8 or higher (including Java 17/21).

Java 8 or Higher

Solver runs on any Java version from 8 upward — you don't need to upgrade your server's Java runtime to use it.