This mod provides an API for syncing config values between different modded clients. It also provides a way to require a mod to join a lobby.
Arkshot-StaminaPlus utilises this mod to sync changed stamina values. It provides good coverage of the entire API.
Requires the 32-bit / x86 version of BepinEx. The plugin was developed with 5.4.21, so if in doubt use that. Further instructions can be found here. Once installed, run then close the game, and modify BepInEx/config/BepInEx.cfg so that [Preloader.Entrypoint], found at the bottom of the file, reads
[Preloader.Entrypoint]
## The local filename of the assembly to target.
# Setting type: String
# Default value: UnityEngine.dll
Assembly = Assembly-CSharp.dll
## The name of the type in the entrypoint assembly to search for the entrypoint method.
# Setting type: String
# Default value: Application
Type = MonoBehaviour
## The name of the method in the specified entrypoint assembly and type to hook and load Chainloader from.
# Setting type: String
# Default value: .cctor
Method = .cctor
Download the latest dll and put it in Arkshot/BepInEx/plugins.