Pulls real-time crowd density for 121 hotspots in Seoul using the city's open data API, based on KT and SKT cell signal estimates updated every 5 minutes. You ask "how crowded is Gangnam Station right now" and get back a congestion level (clear, normal, somewhat crowded, crowded) plus estimated population range. Data runs about 15 minutes behind and goes dark between 1-5am. The implementation is a single Python script with no external dependencies that routes through a proxy so you don't need your own API key. Smart for anyone building location-aware apps in Seoul or just trying to avoid the crowds at Hongdae on a Saturday night.
npx skills add https://github.com/nomadamas/k-skill --skill seoul-density