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Server Tools

Tools / Core Keeper

Core Keeper

All 1 free Core Keeper server tools, in one place.

## tools

core-keeper/doctor

Connection Doctor

Paste Player.log or ServerConfig.json and get the real reason nobody can join: a password the server rewrites on every restart, a missing Steam SDK link, the Steam relay refusing direct joins, or a world that never saved.

> > diagnose

deeper guides

For game-side help (how mods work, command references, troubleshooting writeups), use the Core Keeper wiki.