21Vianet

21Vianet (VNET Group, Inc.) is the largest carrier-neutral internet and data center services provider in China, operating more than 50 data centers across over 20 cities with tens of thousands of cabinets and multi-terabit network port capacity. The company delivers hosting, managed hosting, interconnectivity, cloud, and hybrid IT infrastructure services to enterprise customers, and is the exclusive operator of Microsoft Azure, Microsoft 365, Dynamics 365, and Power Platform in mainland China through its Blue Cloud subsidiary. 21Vianet trades on Nasdaq under the ticker VNET. This profile was added to the API Evangelist network as a portfolio lead; 21Vianet does not publish a public first-party developer API program, so most API artifacts are legitimately not applicable.

21Vianet is profiled on the APIs.io network. Tagged areas include Company, Infrastructure, Data-Center, Cloud, and Hosting.

🌐 Visit website 📡 Source on GitHub
5.7/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
0 APIs
CompanyInfrastructureData-CenterCloudHostingColocationChinaManaged Service

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 5.7/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Access Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Contract Governance 0.0 / 12
Discoverability 5.7 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
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
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/21vianet: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

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

21Vianet Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 4

The organization behind the API

Website
Website
 Website
Website
 InvestorRelations
InvestorRelations
 LinkedIn
LinkedIn

Source (apis.yml)

apis.yml Raw ↑ 
aid: 21vianet
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/21vianet.png
name: 21Vianet
description: 21Vianet (VNET Group, Inc.) is the largest carrier-neutral internet and data center services provider in China,
  operating more than 50 data centers across over 20 cities with tens of thousands of cabinets and multi-terabit network port
  capacity. The company delivers hosting, managed hosting, interconnectivity, cloud, and hybrid IT infrastructure services
  to enterprise customers, and is the exclusive operator of Microsoft Azure, Microsoft 365, Dynamics 365, and Power Platform
  in mainland China through its Blue Cloud subsidiary. 21Vianet trades on Nasdaq under the ticker VNET. This profile was added
  to the API Evangelist network as a portfolio lead; 21Vianet does not publish a public first-party developer API program,
  so most API artifacts are legitimately not applicable.
url: https://raw.githubusercontent.com/api-evangelist/21vianet/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- trinity-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-17'
tags:
- Company
- Infrastructure
- Data-Center
- Cloud
- Hosting
- Colocation
- China
- Managed Service
tags_raw:
- Company
- Infrastructure
- Data Center
- Cloud
- Hosting
- Colocation
- China
- Managed Services
apis: []
common:
- type: DomainSecurity
  url: security/21vianet-domain-security.yml
- type: LLMsTxt
  url: llms/21vianet-llms.txt
- type: WellKnown
  url: well-known/21vianet-well-known.yml
- type: Website
  url: https://www.21vianet.com/
- type: Website
  url: https://www.vnet.com/en/
- type: InvestorRelations
  url: https://ir.vnet.com/
- type: LinkedIn
  url: https://cn.linkedin.com/company/21vianet-group-limited
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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