JsonDotNET is the shared 13.0.3 build of Newtonsoft Json.NET for Valheim, maintained by the ValheimModding team. Many mods list it as an external dependency, so you must install JsonDotNET if a mod requires it.
For manual installs, place Newtonsoft.Json.dll into BepInEx/plugins. Mod creators should reference this package in their solutions and add it as a dependency on Thunderstore, instead of bundling the files. 📦
