This is unified search across every MCP source you've connected. Instead of checking Slack, then Gmail, then Google Drive separately, you ask once and it fans out queries in parallel, deduplicates what it finds, and synthesizes an actual answer with attribution. The routing logic is smart: it translates filters like "from:" and "after:" into each platform's native syntax, so a single query works whether you're searching chat threads or project tracker tickets. Most useful when you remember a decision happened but not where, or when onboarding someone who needs context spread across six tools. The synthesis step matters more than you'd expect, turning ten search results into one coherent answer beats a list every time.
npx skills add https://github.com/anthropics/knowledge-work-plugins --skill search