AI coding assistants have long since moved beyond autocomplete. Agentic IDEs now read your project, plan multi-step changes, call tools, install libraries, and quietly edit your codebase. To support that workflow, tools like Claude Code include support for third-party plugin marketplaces. Connect a marketplace. Enable a plugin. Your agent gains new “skills” for tests, infra, migrations, and dependency management. OpenAI has adopted a similar pattern for tools, so to be clear, this is not a