A small plugin is a good way to learn a desktop client's extension system. This example displays a chat message after login. It covers discovery, dependency injection, game events and packaging without automating gameplay. I maintain the OpenOSRS project at OOSRS/OOSRS . It builds on the RuneLite/OpenOSRS ecosystem; the example below comes from our public example-plugin repository . Build the example You need Git and JDK 11. The repository includes its Gradle wrapper, so you...