SK Telecom
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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles SK Telecom the way a machine reads it — 43 machine-readable artifacts across 6 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — SK Telecom scores 43.8/100 (developing), with a separate agent-readiness read of 44/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile SK Telecom
Each block below is one kind of artifact we hold for SK Telecom. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 32
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
SK Telecom Geovision Floating Population API
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 downl...
SK Telecom Puzzle Subway Congestion API
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...
SK Telecom Puzzle Domestic Travel API
Domestic travel analytics — traveller volume by destination, in-region dwell time, and traveller characteristics (gender, age band, companion type). Documented on the SK open AP...
SK Telecom Puzzle Restaurant API
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 thi...
SK Telecom Puzzle Academy API
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 pub...
Passkey by SK Telecom API
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 ou...
SK Telecom T ID Login API
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 inte...
NUGU Developers
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...
SK Telecom QRNG
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...
SK Telecom Apartment API
The Apartment API from SK Telecom — 1 operation(s) for apartment.
SK Telecom Area Info API
The Area Info API from SK Telecom — 1 operation(s) for area info.
SK Telecom Company API
The Company API from SK Telecom — 4 operation(s) for company.
SK Telecom Congestion API
The Congestion API from SK Telecom — 6 operation(s) for congestion.
SK Telecom Detect API
The Detect API from SK Telecom — 1 operation(s) for detect.
SK Telecom Device API
The Device API from SK Telecom — 2 operation(s) for device.
SK Telecom Face API
The Face API from SK Telecom — 2 operation(s) for face.
SK Telecom Golf Swing Analyzer API
The Golf Swing Analyzer API from SK Telecom — 3 operation(s) for golf swing analyzer.
SK Telecom Group API
The Group API from SK Telecom — 2 operation(s) for group.
SK Telecom Landmark API
The Landmark API from SK Telecom — 1 operation(s) for landmark.
SK Telecom License Plate Recognizer API
The License Plate Recognizer API from SK Telecom — 1 operation(s) for license plate recognizer.
SK Telecom Life style API
The Life style API from SK Telecom — 1 operation(s) for life style.
SK Telecom Message API
The Message API from SK Telecom — 1 operation(s) for message.
SK Telecom Place API
The Place API from SK Telecom — 2 operation(s) for place.
SK Telecom Pose Estimation API
The Pose Estimation API from SK Telecom — 3 operation(s) for pose estimation.
SK Telecom Recognize API
The Recognize API from SK Telecom — 1 operation(s) for recognize.
SK Telecom Resident API
The Resident API from SK Telecom — 3 operation(s) for resident.
SK Telecom Segmentation API
The Segmentation API from SK Telecom — 1 operation(s) for segmentation.
SK Telecom Statistics API
The Statistics API from SK Telecom — 3 operation(s) for statistics.
SK Telecom Subject API
The Subject API from SK Telecom — 2 operation(s) for subject.
SK Telecom Tts API
The Tts API from SK Telecom — 1 operation(s) for tts.
SK Telecom Visit API
The Visit API from SK Telecom — 7 operation(s) for visit.
SK Telecom Voice API
The Voice API from SK Telecom — 1 operation(s) for voice.
Scroll within the panel for all 32 ·
Open Collections 6
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Sk Telecom Rate Limits
RATE LIMITSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for SK Telecom — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 9
MCP servers, agent skills, and machine-readable catalogs
Scroll within the panel for all 9 ·
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 6
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
Other 14
Properties that don't map to a standard resource type
Scroll within the panel for all 14 ·
← All providers · Data indexed from github.com/api-evangelist/sk-telecom · machine-readable index on apis.io
This is an independent, third-party profile of SK Telecom, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.