generated: '2026-07-25'
method: searched
source: https://openapi.sk.com/support/notice/listView
docs: https://openapi.sk.com/support/notice/listView
summary: >-
  SK open API has no developer changelog in the modern sense — no release notes page, no
  versioned CHANGELOG, no RSS. What it has is a dated Korean-language notice board (공지사항)
  at /support/notice/listView where gateway changes, error-code changes, quota reductions,
  maintenance windows and service terminations are announced. Notices are addressed by
  ntiSeq and are readable anonymously; the list view itself only renders the two pinned
  notices to an anonymous visitor, so the entries below were read by walking ntiSeq. Recent
  window only — this is not the full history.
scheme: dated notice board (공지사항), no version numbers
current_version: null
version_note: >-
  Each API carries its own path version segment (axtts has none, facecan /v1, META /golf/v1
  and /pose/v1, OVS /v20, Puzzle unversioned). There is no portal-wide API version.
entries:
- date: '2026-07-02'
  seq: 362
  title: 행정구역 변경으로 인한 TMAP API 작업 일정 시간 변경 안내
  title_en: TMAP API maintenance rescheduled again for administrative-district changes
  kind: maintenance
  breaking: false
  note: TMAP is operated by TMAP Mobility Co., Ltd., not SK Telecom; listed for portal completeness.
- date: '2026-06-30'
  seq: 361
  title: 행정구역 변경으로 인한 TMAP API 작업 일정 변경 안내
  title_en: TMAP API maintenance rescheduled for administrative-district changes
  kind: maintenance
  breaking: false
- date: '2026-06-24'
  seq: 360
  title: 행정구역 변경으로 인한 TMAP API 작업 안내
  title_en: TMAP API maintenance for administrative-district changes
  kind: maintenance
  breaking: false
- date: '2026-04-23'
  seq: 359
  url: https://openapi.sk.com/support/notice/detailView?ntiSeq=359
  title: SK open API 보안 강화에 따른 불필요 포트 폐쇄 및 HTTP 접속 제한 일정 변경
  title_en: Revised schedule — unnecessary ports closed and HTTP access restricted
  kind: breaking
  breaking: true
  effective: '2026-07-01'
  scope: SK open API Gateway (apis.openapi.sk.com) and every API behind it
  highlights:
  - Port 80 (HTTP) closed; all API calls forced to HTTPS on port 443.
  - No automatic 80 to 443 redirect is provided — callers must edit their source.
- date: '2026-04-16'
  seq: 358
  title: SK open API 보안 강화에 따른 불필요 포트 폐쇄 및 HTTP 접속 제한 안내
  title_en: Original announcement — unnecessary ports closed and HTTP access restricted
  kind: breaking
  breaking: true
- date: '2026-04-06'
  seq: 357
  url: https://openapi.sk.com/support/notice/detailView?ntiSeq=357
  title: OVS API 서비스 종료 안내
  title_en: OVS API end of service
  kind: sunset
  breaking: true
  effective: '2026-04-07T13:00+09:00'
  highlights:
  - OVS API terminated at the provider's discretion; one day of notice.
  - Plans attached to apps using OVS were deleted; calls no longer return valid results.
- date: '2026-04-06'
  seq: 356
  title: LITMUS API 서비스 종료 안내
  title_en: LITMUS API end of service (Open API form only; the LITMUS data product continues)
  kind: sunset
  breaking: true
  effective: '2026-04-07T13:00+09:00'
- date: '2026-03-24'
  seq: 355
  title: Amazon RDS 및 Lambda 버전 업그레이드 작업 진행 (3/25)
  title_en: Amazon RDS and Lambda version upgrade maintenance
  kind: maintenance
  breaking: false
- date: '2023-05-15'
  seq: 312
  title: 실시간 장소 혼잡도 API 개선에 따른 공지
  title_en: Improvements to the real-time place congestion API
  kind: change
  breaking: false
  api: SK Telecom Puzzle Place Congestion API
- date: '2023-03-17'
  seq: 311
  url: https://openapi.sk.com/support/notice/detailView?ntiSeq=311
  title: 지오비전 퍼즐 API(지하철 혼잡도, 장소 혼잡도, 국내 여행) 무료 상품 한도 축소 안내
  title_en: Geovision Puzzle free-tier daily quotas reduced (subway congestion, place congestion, domestic travel)
  kind: quota
  breaking: true
  effective: '2023-03-27'
  note: See rate-limits/sk-telecom-rate-limits.yml for the published before/after quota table.
- date: '2023-02-02'
  seq: 309
  url: https://openapi.sk.com/support/notice/detailView?ntiSeq=309
  title: Gateway 공통 에러코드 변경 안내
  title_en: Gateway common error codes changed
  kind: breaking
  breaking: true
  effective: '2023-02-02'
  highlights:
  - Numeric gateway error codes (8001, 8101, 8102, 8104, 8105, 7104, 9999, 8901) replaced by
    symbolic codes (UNAUTHORIZED, INVALID_API_KEY, ACCESS_DENIED, MISSING_AUTHENTICATION_TOKEN,
    THROTTLED, QUOTA_EXCEEDED, API_CONFIGURATION_ERROR, INTEGRATION_FAILURE).
  - Error envelope retained as {"error":{"id","category","code","message"}}.
  - Full table captured in errors/sk-telecom-error-codes.yml.
- date: '2023-01-30'
  seq: 307
  title: '*재공지* SK open API 개편에 따른 홈페이지 접속 중단 안내 (2/1~2)'
  title_en: Re-announcement — portal downtime for the SK open API relaunch
  kind: maintenance
  breaking: false
- date: '2023-01-27'
  seq: 305
  title: SK open API 개편에 따른 서비스 일시 중단 안내(2/1~2)
  title_en: Service suspension for the SK open API relaunch
  kind: maintenance
  breaking: false