What
Plugins are add-ons that extend Claude Code. Where Claude Code shows where a plugin came from, plugins from the plugin directory used to be labelled 'Unknown source'. They are now labelled 'Built in'.
Claude Code also has new internal names for the plugin directory's catalog, switch and toggle.
Why
The label now says where these plugins come from instead of suggesting their source is unknown.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not clear where the new catalog, switch and toggle names are used.