Looks useful, so they are new plugins. But what are plugins vs skills vs connectors?
A plugin is just a bundle of MCPs, skills and templated prompts.
A skill cannot provide MCPs and can't provide custom template prompts, each skill is it's own slash command.
A plugin you can define N number of custom slash commands, and you can define MCPs as well as skills. So it bundles like all the things together.
By installing a plugin, you are basically installing a bunch of MCPs, skills and custom slash command prompts.
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A plugin is just a bundle of MCPs, skills and templated prompts.
A skill cannot provide MCPs and can't provide custom template prompts, each skill is it's own slash command.
A plugin you can define N number of custom slash commands, and you can define MCPs as well as skills. So it bundles like all the things together.
By installing a plugin, you are basically installing a bunch of MCPs, skills and custom slash command prompts.