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Seoul Subway Arrival

nomadamas/k-skill
2.5k installs5.3k stars
Summary

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.

Install to Claude Code

npx -y skills add nomadamas/k-skill --skill seoul-subway-arrival --agent claude-code

Installs into .claude/skills of the current project.

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Files
SKILL.mdView on GitHub

Seoul Subway Arrival

What this skill does

서울 열린데이터 광장의 실시간 지하철 도착정보 Open API를 k-skill-proxy 경유로 조회해 역 기준 도착 예정 열차 정보를 요약한다.

When to use

  • "강남역 지금 몇 분 뒤 도착해?"
  • "서울역 1호선 도착 정보 보여줘"
  • "잠실역 곧 들어오는 열차 정리해줘"

Prerequisites

  • optional: jq
  • optional: KSKILL_PROXY_BASE_URL (self-host·별도 프록시를 쓸 때만 설정. 비우면 기본 hosted https://k-skill-proxy.nomadamas.org 를 사용한다.)

Required environment variables

  • 없음. KSKILL_PROXY_BASE_URL 은 선택 사항이며, 비우면 기본 hosted https://k-skill-proxy.nomadamas.org 를 사용한다.

사용자가 개인 서울 열린데이터 광장 OpenAPI key를 직접 발급할 필요는 없다. /v1/seoul-subway/arrival route는 기본 hosted proxy에서 호출하고, upstream key는 proxy 서버 쪽에만 보관한다. 별도 proxy를 쓰는 경우에만 KSKILL_PROXY_BASE_URL 을 설정한다.

Proxy resolution order

  1. KSKILL_PROXY_BASE_URL 이 있으면 그 값을 사용한다.
  2. 없거나 빈 값이면 기본 hosted proxy https://k-skill-proxy.nomadamas.org 를 사용한다.
  3. 직접 proxy를 운영하는 경우에만 proxy 서버 upstream key를 서버 쪽에만 설정한다.

클라이언트/사용자 쪽에서 upstream key를 직접 다루지 않는다.

Inputs

  • 역명
  • 선택 사항: 가져올 건수

Workflow

1. Resolve the proxy base URL

KSKILL_PROXY_BASE_URL 이 있으면 그 값을 사용하고, 없거나 비어 있으면 기본 hosted proxy https://k-skill-proxy.nomadamas.org 를 사용한다.

2. Query the official station arrival endpoint

proxy는 서울 실시간 지하철 API key를 서버에서 주입하고, 역명 기준 실시간 도착정보만 공개 read-only endpoint로 노출한다.

BASE="${KSKILL_PROXY_BASE_URL:-https://k-skill-proxy.nomadamas.org}"
curl -fsS --get "${BASE}/v1/seoul-subway/arrival" \
  --data-urlencode 'stationName=강남'

필요하면 startIndex, endIndex 로 응답 범위를 조정할 수 있다.

3. Summarize the response

가능하면 아래 항목만 먼저 요약한다.

  • 호선
  • 상/하행 또는 외/내선
  • 첫 번째 도착 메시지
  • 두 번째 도착 메시지
  • 도착 예정 시간(있으면 초 단위)

4. Be conservative about live data

실시간 데이터는 몇 초 단위로 바뀔 수 있으므로, 답변에는 조회 시점을 같이 적는다.

Done when

  • 요청 역의 도착 예정 열차가 정리되어 있다
  • live data 기준 시점이 명시되어 있다
  • upstream key가 클라이언트에 노출되지 않았다

Failure modes

  • proxy upstream key 미설정
  • quota 초과
  • 역명 표기 불일치

Notes

  • 서울 열린데이터 광장 가이드는 실시간 지하철 Open API에 일일 호출 제한이 있을 수 있다고 안내한다
  • proxy 운영/환경변수 설정은 docs/features/k-skill-proxy.md 를 참고한다
  • endpoint path는 API 버전 변경 가능성이 있으므로 실패 시 dataset console의 최신 샘플 URL을 다시 확인한다
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First SeenApr 16, 2026
View on GitHub

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