Matt Van Horn's /last30days skill: rapid AI-powered industry research

One of the standout public AI skills is Matt Van Horn's /last30days, available on GitHub. It gives AI the ability to figure out today's date, scan the news of the last 30 days, synthesize it in interesting ways, and fan out large numbers of agents in parallel to bring information back to you quickly. The practical use case is getting spun up fast on an industry or a specific company before a workshop or client engagement. But it goes beyond prep work — you can also prompt it with something like 'startup ideas that could be built by someone with the following background or the following skills or the last three jobs of X' to carve out a new path that people aren't already doing. It's a tool for turning recent signal into actionable direction very quickly.