Queries Seoul's real-time subway arrival API through a hosted proxy so you don't need your own API key from Seoul Open Data Plaza. Ask it "when does the next train arrive at Gangnam station" or "show me line 1 arrivals at Seoul Station" and it hits the official endpoint, parses out line number, direction, arrival messages, and estimated seconds until arrival. The proxy setup is smart: it defaults to a public instance at k-skill-proxy.nomadamas.org but you can point it at your own if you're running one. Useful if you're building anything that needs live Seoul subway timing without dealing with API key management, though daily quota limits still apply on the upstream side.
npx skills add https://github.com/nomadamas/k-skill --skill seoul-subway-arrival