CoalHost detects, diagnoses, fixes and reboots while you sleep, then emails you what happened.
Step 1
Agent on the host watches the JVM. The panel knows the moment a server dies — usually before the player rage-quits the lobby.
Step 2
Haiku reads the stack trace, identifies the offending mod or config, and matches it against the cross-customer crash-pattern database.
Step 3
Recipe DB applies the known-good remediation: disable broken recipe, lower a tick rate, swap a config flag, or roll back a bad mod update.
Step 4
Restart is gated on a smoke-test. If the fix doesn't hold, we email you with the root cause instead of looping forever.
Apex, Bisect and Shockbyte don't do this. They ticket you, wait for a tech, and bill you anyway.
Learn how it worksMost hosting providers stop at "we restarted it." CoalHost treats reliability as a four-stage engineering problem and runs an AI agent at every stage.
Linear regression over heap-after-GC samples flags the trajectory toward OutOfMemoryError before the JVM panics.
Most providers find out about an OOM the same way you do: when players ping you in Discord. We sample heap usage every 30 seconds, fit a line, and the moment the projected ceiling crosses the cap inside the next 30 minutes we surface a banner in the panel and email the owner. Often the fix is a RAM bump or a leaking-mod swap — either way you make the call before the world is offline.
Heap retention by class is sampled hourly; if a mod's footprint grows monotonically over four hours, we triage it and tell you which mod is leaking.
On suspect growth the agent triggers a heap dump and feeds the dominant-tree class names to the AI. We've already correlated common leak signatures (entity caches, projectile holders, tile-entity collections) with the mods that ship them. You get a one-line root cause: "Mod XYZ leaks projectiles, version 2.0.3 has a fix" — not a 300 MB hprof and shrug.
Spark runs on a schedule. The AI reads the report and says "Mod X consumes 30% of tick time — disable, or update, or live with it."
Spark is the standard, but the standard output is a 50-page profile most server owners don't read. We auto-install Spark, run profiled samples once per week, and ship the AI's plain-English summary into the panel. Common output: "AmbientSounds spends 18% of tick — set ambient_sound_volume=0 in the config." That's what tuning a modpack actually looks like.
One customer's fix becomes every customer's fix. Recipe DB stores fingerprinted crash → remediation pairs and applies them on install.
Every crash gets fingerprinted (stack-trace head + mod IDs + Forge version). If a fingerprint matches a known pattern, we apply the recipe automatically. If it doesn't, we triage it manually once — and from that moment forward every customer with the same fingerprint gets the fix on install. After one month of running this on ZOMBIEMANIA we'd covered 12 modpacks. The network effect compounds.
Agent on the host watches the JVM and ships logs the moment a server exits non-zero.
Stack-trace head + mod IDs + Forge version → stable hash that survives line-number churn.
Recipe DB lookup first; on miss, Haiku reads the report and proposes a remediation.
Recipe applied (disable mod, tweak config, roll back update); smoke-test gates the restart.
30 min
advance OOM warning before the JVM panics
100%
of recognised crashes have an automatic fix on install
12 packs
covered by recipe DB after the first month
<1 ms
ZGC pause vs G1's 50–300 ms — no lag-spike kills
CoalHost is the only hosting provider in this segment that ships every layer. The others compete on price tier, panel polish or first-month coupons.
| Feature | CoalHost | Apex | Bisect | Shockbyte |
|---|---|---|---|---|
| AI crash analysis | ||||
| OOM prediction (30 min advance) | ||||
| Memory-leak detection | ||||
| ZGC sub-1ms GC pause by default | ||||
| Recipe-DB cross-customer fixes | ||||
| Spark profiler + AI tuning | ||||
| One-click modpack install | ||||
| Backups |
Information about competitors gathered from their public pricing, documentation and feature pages as of 2026. Comparisons are made in good faith. Want a feature added? Email [email protected].
Modpacks that fix themselves. EU datacenter today, NA (Ashburn) coming Q4. Sign up free, pay only when you add a server.