If you can’t find a plugin that does what you need, consider making one. The process is simpler than you think:
The official OB2 wiki has templates and examples for each plugin type. openbullet 2 plugins install
Some builds of OpenBullet 2 (especially community forks) include a built-in plugin downloader. This is not present in every version, but if you see a "Plugin Store" or "Online Plugins" tab: If you can’t find a plugin that does
This is the safest method as the plugin list is usually curated and scanned for obvious threats. The official OB2 wiki has templates and examples
Plugins are loaded only at startup. Close OB2 completely and relaunch it.