Sankun

Sankun (산군) is a South Korean construction-industry big data platform based in Seoul that aggregates and sells access to eight integrated construction databases covering roughly 280,000 construction companies, some 820,000 project sites, government e-procurement bids, contract awards, professional reputation reviews, and construction news. Alongside its web application and a construction sales CRM (Sankun Sales), the company markets a Sankun API (data.sankun.com) for programmatic access to its construction data, though public developer documentation is gated behind sales and login. Sankun is a portfolio company of 500 Global.

Sankun publishes 1 API on the APIs.io network. Tagged areas include Company, Construction, Big Data, Data, and Real Estate.

Sankun’s developer surface includes pricing, engineering blog, signup flow, and 2 more developer resources.

🌐 Visit website 📡 Source on GitHub
14.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
1 APIs
CompanyConstructionBig DataDataReal EstateAnalyticsCRMSouth Korea

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 14.4/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 4.7 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/sankun: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Sankun API

Programmatic access to Sankun's construction big-data platform — company, site, construction, bid, contract, reputation and news databases. Marketed at data.sankun.com; develope...

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Sankun Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp
SignUp

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: sankun
name: Sankun
description: Sankun (산군) is a South Korean construction-industry big data platform based in Seoul that aggregates and sells
  access to eight integrated construction databases covering roughly 280,000 construction companies, some 820,000 project
  sites, government e-procurement bids, contract awards, professional reputation reviews, and construction news. Alongside
  its web application and a construction sales CRM (Sankun Sales), the company markets a Sankun API (data.sankun.com) for
  programmatic access to its construction data, though public developer documentation is gated behind sales and login. Sankun
  is a portfolio company of 500 Global.
url: https://raw.githubusercontent.com/api-evangelist/sankun/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Construction
- Big Data
- Data
- Real Estate
- Analytics
- CRM
- South Korea
image: https://sankun.com/favicon.ico
apis:
- name: Sankun API
  description: Programmatic access to Sankun's construction big-data platform — company, site, construction, bid, contract,
    reputation and news databases. Marketed at data.sankun.com; developer documentation is gated behind sales inquiry and
    login.
  humanURL: https://data.sankun.com
  baseURL: https://data.sankun.com
  tags:
  - Construction
  - Data
  - Big Data
  properties: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 1
  pass: local-v1
common:
- type: DomainSecurity
  url: security/sankun-domain-security.yml
- type: Website
  url: https://sankun.com
- type: Pricing
  url: https://sankun.com/main/pricing
- type: Blog
  url: https://sankun.com/blog/main
- type: SignUp
  url: https://sankun.com/signup/signup