Combine

When you're working with Swift's Combine framework and need quick API references without leaving your coding flow, this handles the lookup for you. It searches through Combine documentation to answer questions about publishers, subscribers, operators, and async streams, then gives you a concise summary plus the relevant file paths if you want to dig deeper. The source material is fairly minimal (just an index file), so it works best for quick orientation questions rather than deep implementation details. It runs in a fork context with the Explore agent, meaning it can search and synthesize without cluttering your main conversation thread.