SK Telecom

aid: sk-telecom
url: https://raw.githubusercontent.com/api-evangelist/sk-telecom/refs/heads/main/apis.yml
name: SK Telecom
kind: company
description: 'SK Telecom Co., Ltd. is South Korea''s largest mobile network operator, headquartered at SK T-Tower in Jung-gu,
  Seoul, and the telecom arm of SK Group. It runs the country''s largest 5G and LTE network, sells fixed broadband and IPTV
  through subsidiary SK Broadband, operates the T world retail and care channel, and has repositioned itself as an "AI company"
  around its A.X sovereign Korean LLM family, the NUGU voice assistant, and the A. (A dot) assistant. Its position in the
  telecom value chain is that of a facilities-based incumbent carrier: it owns the radio access network, spectrum, SIM base,
  and identity rails that the rest of the Korean digital economy authenticates against. Its API posture is split in an unusual
  way. SK Telecom does run a genuine, self-serve public developer portal — SK open API at openapi.sk.com, operated by SK Telecom
  Co., Ltd. — but what it publishes there is AI, big-data and mobility product APIs (speech synthesis, face recognition, congestion
  and floating-population analytics, video analysis), not network APIs. The legacy T developers subdomains developer.sktelecom.com
  and developers.sktelecom.com both resolve in DNS to 211.188.149.18 and refuse connections on port 443 — a dead developer
  programme with dangling hostnames. On the network-API side SK Telecom is a named CAMARA participant and appears in the CAMARA
  landscape as an operator, has an organisation page in GSMA''s Open Gateway directory, signed a domestic MoU with KT and
  LG Uplus in October 2024 to standardise six network APIs through Korea''s TTA, endorsed the Bridge Alliance API Exchange,
  and signed an MoU with Aduna through subsidiary SK telink in September 2025 — but no CAMARA endpoint (Number Verification,
  SIM Swap, KYC Match, Quality on Demand) is callable from any SK Telecom-operated developer portal. Developers who want SK
  Telecom network capability reach it through aggregators — Bridge Alliance BAEx on Singtel''s Paragon platform, surfaced
  through Nokia''s Network as Code developer portal, or Aduna — not from SK Telecom directly.'
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Telecommunications
- South Korea
- Mobile Network Operator
- Network APIs
- CAMARA
- Open Gateway
- 5G
- Identity Verification
- SIM Swap
- Artificial Intelligence
- Location
- Big Data
created: '2026-07-25'
modified: '2026-07-25'
specificationVersion: '0.19'
apis:
- aid: sk-telecom:sk-telecom-ax-tts-api
  name: SK Telecom A.X TTS API
  description: Korean text-to-speech built on SK Telecom's own DNN speech-synthesis models and voice database, operated by
    SKT's speech synthesis technology team. Three documented operations — list TTS models, list the voices a model supports,
    and synthesize speech (with an optional timestamped variant). Authenticated with an appKey header issued from the SK open
    API dashboard.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=67
  baseURL: https://apis.openapi.sk.com/axtts
  tags:
  - Artificial Intelligence
  - Speech
  - Text to Speech
  - Korean
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=67
  - type: APIReference
    url: https://ax-tts-skopenapi.readme.io/reference/text-to-speech-tts
  - type: OpenAPI
    url: openapi/sk-telecom-ax-tts-openapi.json
  - type: GettingStarted
    url: https://ax-tts-skopenapi.readme.io/reference/getting-started-with-ax-tts-api
    name: Getting Started With A.X TTS API
  - type: Overlay
    url: overlays/sk-telecom-ax-tts-overlay.yaml
  - type: LLMsTxt
    url: llms/sk-telecom-ax-tts-llms.txt
    name: llms.txt published at https://ax-tts-skopenapi.readme.io/llms.txt
  - type: AgentSkill
    url: skills/sk-telecom-synthesize-korean-speech.md
    name: Synthesize Korean speech with SK Telecom A.X TTS
- aid: sk-telecom:sk-telecom-facecan-api
  name: SK Telecom A. facecan API
  description: Face recognition and analysis API (published as "NUGU facecan"). Build a per-group, per-subject face database
    and then detect, recognize and extract landmarks from submitted JPEG images. Nine documented operations covering group,
    subject and face CRUD plus detect, recognize and landmark inference. Supported input 320x240 to 3840x2160, JPG/JPEG under
    2 MB.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=50
  baseURL: https://apis.openapi.sk.com/nugufacecan
  tags:
  - Artificial Intelligence
  - Computer Vision
  - Face Recognition
  - Biometrics
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=50
  - type: APIReference
    url: https://nugufacecan-skopenapi.readme.io/reference/face-detect-1
  - type: OpenAPI
    url: openapi/sk-telecom-facecan-openapi.json
  - type: Overlay
    url: overlays/sk-telecom-facecan-overlay.yaml
  - type: LLMsTxt
    url: llms/sk-telecom-nugufacecan-llms.txt
    name: llms.txt published at https://nugufacecan-skopenapi.readme.io/llms.txt
  - type: ErrorCatalog
    url: https://nugufacecan-skopenapi.readme.io/reference/error-codes
    name: A. facecan Error Codes (41 codes, captured in errors/sk-telecom-error-codes.yml)
  - type: AgentSkill
    url: skills/sk-telecom-enroll-and-recognize-a-face.md
    name: Enroll and recognize a face with SK Telecom A. facecan
- aid: sk-telecom:sk-telecom-puzzle-place-congestion-api
  name: SK Telecom Puzzle Place Congestion API
  description: Place congestion and visitor analytics derived from SK Telecom mobile network data, keyed to TMAP points of
    interest and to commercial AREA identifiers. Sixteen documented operations covering POI/area metadata, real-time congestion,
    hourly congestion statistics, and daily visitor counts, travel distance and segment statistics.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=56
  baseURL: https://apis.openapi.sk.com/puzzle/place
  tags:
  - Big Data
  - Location
  - Congestion
  - Analytics
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=56
  - type: APIReference
    url: https://puzzle-skopenapi.readme.io/reference/poicongestionrltm
  - type: OpenAPI
    url: openapi/sk-telecom-puzzle-place-congestion-openapi.json
  - type: Overlay
    url: overlays/sk-telecom-puzzle-place-congestion-overlay.yaml
  - type: LLMsTxt
    url: llms/sk-telecom-puzzle-llms.txt
    name: llms.txt published at https://puzzle-skopenapi.readme.io/llms.txt
  - type: RateLimits
    url: rate-limits/sk-telecom-rate-limits.yml
    name: Published Free-plan daily quotas (100/day and 1,000/day by API group)
  - type: AgentSkill
    url: skills/sk-telecom-read-place-congestion.md
    name: Read place and commercial-area congestion from SK Telecom Geovision Puzzle
- aid: sk-telecom:sk-telecom-puzzle-residence-api
  name: SK Telecom Puzzle Residence API
  description: Apartment-complex resident profile analytics derived from SK Telecom network data. Five documented operations
    returning the apartment complex list plus monthly statistics on resident age distribution, demographic features, category
    behaviour and subway usage rate, keyed on the Korean kaptCode apartment identifier.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=66
  baseURL: https://apis.openapi.sk.com/puzzle/residence
  tags:
  - Big Data
  - Demographics
  - Housing
  - Analytics
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=66
  - type: APIReference
    url: https://puzzle-skopenapi.readme.io/reference/apts
  - type: OpenAPI
    url: openapi/sk-telecom-puzzle-residence-openapi.json
  - type: Overlay
    url: overlays/sk-telecom-puzzle-residence-overlay.yaml
- aid: sk-telecom:sk-telecom-meta-api
  name: SK Telecom META API
  description: Video and image analysis AI served from SK Telecom's sigmeta service. Seven documented operations covering
    an asynchronous analyzer lifecycle (create analyzer, upload file, start analyzer, get result) for golf swing analysis
    and pose estimation, plus licence plate recognition. Uploads go to a temporary presigned S3 URL returned by the create
    call.
  humanURL: https://openapi.sk.com/
  baseURL: https://apis.openapi.sk.com/sigmeta
  tags:
  - Artificial Intelligence
  - Computer Vision
  - Video Analysis
  properties:
  - type: Documentation
    url: https://openapi.sk.com/
  - type: APIReference
    url: https://meta-skopenapi.readme.io/reference/lpr-1
  - type: OpenAPI
    url: openapi/sk-telecom-meta-openapi.json
  - type: Overlay
    url: overlays/sk-telecom-meta-overlay.yaml
  - type: LLMsTxt
    url: llms/sk-telecom-meta-llms.txt
    name: llms.txt published at https://meta-skopenapi.readme.io/llms.txt
  - type: ErrorCatalog
    url: https://meta-skopenapi.readme.io/reference/error-code-2
    name: META Error Code reference
  - type: AgentSkill
    url: skills/sk-telecom-analyze-video-with-meta.md
    name: Analyze video and images with SK Telecom META
- aid: sk-telecom:sk-telecom-ovs-api
  name: SK Telecom OVS API
  description: 'OVS is SK Telecom''s road-event alerting service. Twelve documented operations covering customer company lookup,
    registration/lookup/deletion of target devices, broadcast of alert messages to devices when a road incident occurs, and
    per-company event statistics and raw event data retrieval. TERMINATED: SK open API announced end of service on 2026-04-06
    with effect from 2026-04-07 13:00 KST — roughly one day of notice — deleting the plans of every consuming app. The OpenAPI
    was never marked deprecated and the documentation hub is still online; the definition is retained here as a record of
    a sunset contract.'
  humanURL: https://openapi.sk.com/
  baseURL: https://apis.openapi.sk.com/api/ovs
  tags:
  - Mobility
  - Safety
  - Messaging
  - Internet of Things
  properties:
  - type: Documentation
    url: https://openapi.sk.com/
  - type: APIReference
    url: https://ovs-skopenapi.readme.io/
  - type: OpenAPI
    url: openapi/sk-telecom-ovs-openapi.json
  - type: Overlay
    url: overlays/sk-telecom-ovs-overlay.yaml
  - type: LLMsTxt
    url: llms/sk-telecom-ovs-llms.txt
    name: llms.txt published at https://ovs-skopenapi.readme.io/llms.txt
  - type: Deprecation
    url: https://openapi.sk.com/support/notice/detailView?ntiSeq=357
    name: OVS API 서비스 종료 안내 — end of service 2026-04-07 13:00 KST
- aid: sk-telecom:sk-telecom-geovision-api
  name: SK Telecom Geovision Floating Population API
  description: Geovision is SK Telecom's flagship big-data API service, estimating floating population (footfall) from mobile
    network signalling. Documented on the SK open API portal; no downloadable OpenAPI was published for this product at the
    time of review.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=2
  baseURL: https://apis.openapi.sk.com/tmap/puzzle
  tags:
  - Big Data
  - Location
  - Footfall
  - Analytics
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=2
- aid: sk-telecom:sk-telecom-puzzle-subway-congestion-api
  name: SK Telecom Puzzle Subway Congestion API
  description: Congestion data for every station and train on Seoul metropolitan subway lines 1 through 9 and the Shinbundang
    Line, including a station metadata/search operation. Documented on the SK open API portal; no downloadable OpenAPI was
    published for this product at the time of review.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=54
  baseURL: https://apis.openapi.sk.com/puzzle/subway
  tags:
  - Big Data
  - Transit
  - Congestion
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=54
  - type: RateLimits
    url: rate-limits/sk-telecom-rate-limits.yml
    name: Free-plan daily quotas — station list 100/day, real-time train congestion 1,000/day
- aid: sk-telecom:sk-telecom-puzzle-travel-api
  name: SK Telecom Puzzle Domestic Travel API
  description: Domestic travel analytics — traveller volume by destination, in-region dwell time, and traveller characteristics
    (gender, age band, companion type). Documented on the SK open API portal; no downloadable OpenAPI was published for this
    product at the time of review.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=57
  baseURL: https://apis.openapi.sk.com/puzzle/travel
  tags:
  - Big Data
  - Travel
  - Analytics
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=57
  - type: RateLimits
    url: rate-limits/sk-telecom-rate-limits.yml
    name: Free-plan daily quotas — 100/day on destination list, traveller count and dwell time
- aid: sk-telecom:sk-telecom-puzzle-restaurant-api
  name: SK Telecom Puzzle Restaurant API
  description: Restaurant rankings and analysis derived from call-volume statistics on SK Telecom's network. Documented on
    the SK open API portal; no downloadable OpenAPI was published for this product at the time of review.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=69
  baseURL: https://apis.openapi.sk.com/puzzle/restaurant
  tags:
  - Big Data
  - Restaurants
  - Analytics
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=69
- aid: sk-telecom:sk-telecom-puzzle-academy-api
  name: SK Telecom Puzzle Academy API
  description: Private academy (hagwon) rankings and analysis derived from call-volume statistics on SK Telecom's network.
    Documented on the SK open API portal; no downloadable OpenAPI was published for this product at the time of review.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=70
  baseURL: https://apis.openapi.sk.com/puzzle/academy
  tags:
  - Big Data
  - Education
  - Analytics
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=70
- aid: sk-telecom:sk-telecom-passkey-api
  name: Passkey by SK Telecom API
  description: SK Telecom's passwordless passkey authentication system for third-party services. The product page links an
    integration guide at api.passkey-sktelecom.com/docs/api.html; from outside Korea that host answered HTTP 200 but served
    only a meta-refresh stub, so the guide content itself could not be retrieved and no OpenAPI was recoverable.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=73
  tags:
  - Identity
  - Authentication
  - Passkey
  - FIDO
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=73
  - type: Documentation
    url: https://api.passkey-sktelecom.com/docs/api.html
- aid: sk-telecom:sk-telecom-t-id-api
  name: SK Telecom T ID Login API
  description: T ID is SK Telecom's federated identity service, the single sign-on used across SK Telecom and SK affiliate
    services with roughly 15 million registered users. Third parties integrate T ID login through the T ID Developers channel
    portal. No .well-known/openid-configuration or .well-known/oauth-authorization-server document is served — those paths
    return the SPA shell.
  humanURL: https://developers.t-id.co.kr/
  tags:
  - Identity
  - Authentication
  - Single Sign On
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=63
  - type: Documentation
    url: https://developers.t-id.co.kr/
- aid: sk-telecom:sk-telecom-nugu-developers
  name: NUGU Developers
  description: Developer centre for NUGU, SK Telecom's Korean-language voice assistant platform, where third parties build
    and publish NUGU "plays". The portal is a single-page application; no OpenAPI or machine-readable descriptor was retrievable
    anonymously.
  humanURL: https://developers.nugu.co.kr/
  tags:
  - Artificial Intelligence
  - Voice
  - Assistant
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=62
  - type: Documentation
    url: https://developers.nugu.co.kr/
- aid: sk-telecom:sk-telecom-qrng-api
  name: SK Telecom QRNG
  description: Quantum random number generation security chip and solution from SK Telecom, listed in the Authentication/Security
    category of the SK open API portal. Listed as a product rather than a documented REST API — no endpoints, base URL or
    OpenAPI were published at the time of review.
  humanURL: https://openapi.sk.com/products/detail?svcSeq=29
  tags:
  - Security
  - Quantum
  - Random Number Generation
  properties:
  - type: Documentation
    url: https://openapi.sk.com/products/detail?svcSeq=29
common:
- type: AgenticAccess
  url: agentic-access/sk-telecom-agentic-access.yml
- type: DomainSecurity
  url: security/sk-telecom-domain-security.yml
- type: Authentication
  url: authentication/sk-telecom-authentication.yml
- type: Website
  url: https://www.sktelecom.com/
- type: DeveloperPortal
  url: https://openapi.sk.com/
  name: SK open API — operated by SK Telecom Co., Ltd.
- type: SignUp
  url: https://openapi.sk.com/user/signUp
- type: SignIn
  url: https://openapi.sk.com/user/login
- type: Support
  url: https://openapi.sk.com/support/qna/qnaListView
- type: FAQ
  url: https://openapi.sk.com/faq
- type: TermsOfService
  url: https://openapi.sk.com/stplat/usage/indexView
- type: PrivacyPolicy
  url: https://privacy.sktelecom.com/view.do?ctg=policy&name=policy
- type: Blog
  url: https://news.sktelecom.com/
- type: GitHubOrganization
  url: https://github.com/sktelecom
- type: OpenSource
  url: https://sktelecom.github.io/en/
- type: LinkedIn
  url: https://www.linkedin.com/company/sk-telecom
- type: Email
  url: mailto:skopenapi@sktelecom.com
- type: PartnerProgram
  url: https://open2u.sktelecom.com/web/WWO01N051X01.do
  name: T Open API via SK Telecom Open2U partner programme
- type: Enterprise
  url: https://www.sktenterprise.com/
- type: Standards
  url: https://github.com/camaraproject/Governance/blob/main/PARTICIPANTS.MD
  name: SK Telecom listed as a CAMARA Project participant
- type: Standards
  url: https://www.gsma.com/solutions-and-impact/gsma-open-gateway/gsma_orgs/sk-telecom/
  name: GSMA Open Gateway organisation page for SK Telecom (HTTP 403 to anonymous probe)
- type: Aggregator
  url: https://www.bridgealliance.com/baex/
  name: Bridge Alliance API Exchange — SK Telecom is an endorsing operator
- type: Aggregator
  url: https://adunaglobal.com/resources/news-aduna-and-sk-telink-announce-collaboration-to-bring-korea-into-the-global-network-api-ecosystem/
  name: Aduna / SK telink MoU, 8 September 2025
- type: Documentation
  url: https://openapi.sk.com/products/detail?linkMenuSeq=61
  name: SK open API product catalog and documentation
- type: ChangeLog
  url: https://openapi.sk.com/support/notice/listView
  name: SK open API 공지사항 — dated notice board where API changes are announced
- type: ChangeLog
  url: changelog/sk-telecom-changelog.yml
- type: Lifecycle
  url: lifecycle/sk-telecom-lifecycle.yml
- type: Deprecation
  url: lifecycle/sk-telecom-lifecycle.yml
  name: Deprecations are announced on the portal notice board with no written policy and, on the 2026 evidence, roughly one
    day of notice; captured with the sunset events.
- type: Conventions
  url: conventions/sk-telecom-conventions.yml
- type: ErrorCatalog
  url: errors/sk-telecom-error-codes.yml
  name: SK open API gateway common error codes plus per-product error registries
- type: ErrorCatalog
  url: errors/sk-telecom-problem-types.yml
  name: Error responses derived from the six OpenAPI documents
- type: RateLimits
  url: rate-limits/sk-telecom-rate-limits.yml
- type: Conformance
  url: conformance/sk-telecom-conformance.yml
- type: DataModel
  url: data-model/sk-telecom-data-model.yml
- type: Packages
  url: packages/sk-telecom-packages.yml
  name: No first-party SDK is published for any SK Telecom API (registries probed 2026-07-25)
- type: Sandbox
  url: sandbox/sk-telecom-sandbox.yml
  name: Try-it consoles only — no sandbox environment and no test credentials
- type: WellKnown
  url: well-known/sk-telecom-well-known.yml
- type: MCPServer
  url: mcp/sk-telecom-mcp.yml
  name: Five live MCP endpoints on the SK Telecom documentation hubs (ReadMe-provided, tools/list auth-gated); no MCP server
    for the SK open API gateway itself
- type: ToolCrosswalk
  url: mcp/sk-telecom-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/sk-telecom-llms.txt
- type: AgentSkill
  url: skills/_index.yml
  name: Four packaged Agent Skills grounded in verified operationIds
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com