Are there any plans to create an infrastructure for supporting AI in external plugins?
Today each plugin that want to add some AI capabilities is implementing a configurable ui and persistence service and users are requested to use their api keys for each plugin, I was wondering if JetBrains is considering expose such infrastructure (maybe there is already?)
Yes, we plan to introduce the AI-related features within the IntelliJ Platform and make them extensible and available for external plugins. No ETA though.
Download all plugins from Marketplace and examine their bundled libraries No, AFAIU we have currently no means to inspect this directly on Marketplace.
Btw download size would matter only/most on initial download of plugin, any further plugin updates use patches.