Two related things sit at this layer. A connector links an AI assistant to a single app or service you already use, like GitHub, Slack or Notion, so it can read information and act there. A plugin goes a step further: it bundles one or more connectors with commands, skills and guardrails, so a whole way of working installs together.
The examples below draw on Anthropic's official plugin directory and common connectors. Other AI platforms have similar catalogues. In Claude Code or Cowork you install a plugin from a marketplace with the /plugin command, and you turn on a connector from your app or assistant settings.