VRChat implements the OSCQuery specification as of release 2023.3.1. This protocol enables OSC applications to more easily find each other, learn about each other's capabilities and automatically configure themselves so users don't have to mess around with IP addresses and Ports.

As a user of an OSC application, check the instructions for that application to see if it supports OSCQuery and any setup you need to do. OSC application developers can read about connecting with VRChat over OSCQuery or integrating our open-source C# library for OSCQuery.