docin

docin (豆丁网, docin.com) is a Chinese C2C document-sharing platform operated by Beijing Docin Century Network Technology (北京豆丁世纪网络技术有限公司) that faces the global market. The platform hosts over 1.3 billion documents, books, magazines, and publications spanning education, architecture and construction, business and contracts, medical and psychological materials, industry reports, and legal documents, supporting both learning and practical application. It offers a "豆丁书房" (Docin Reading Room) mobile reading app and VIP membership tiers. docin was surfaced as a portfolio company of Qiming Venture Partners and added to the API Evangelist network. Probing found no public developer or API platform: open.docin.com 301-redirects to the homepage, /app/api returns 404, and no /.well-known discovery documents are published.

docin is profiled on the APIs.io network. Tagged areas include Company, Documents, Document Sharing, Content, and Publishing.

🌐 Visit website 📡 Source on GitHub

2.5/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Documents Document Sharing Content Publishing Education China

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 2.5/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 1.7 / 15

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

Regulatory Posture applies to this provider. Its tags matched the Education & Research regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/docin: 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.

Docin Domain Security

TLSv1.2

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: docin
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/docin.png
name: docin
description: 'docin (豆丁网, docin.com) is a Chinese C2C document-sharing platform operated by Beijing Docin Century Network
  Technology (北京豆丁世纪网络技术有限公司) that faces the global market. The platform hosts over 1.3 billion documents, books, magazines,
  and publications spanning education, architecture and construction, business and contracts, medical and psychological materials,
  industry reports, and legal documents, supporting both learning and practical application. It offers a "豆丁书房" (Docin Reading
  Room) mobile reading app and VIP membership tiers. docin was surfaced as a portfolio company of Qiming Venture Partners
  and added to the API Evangelist network. Probing found no public developer or API platform: open.docin.com 301-redirects
  to the homepage, /app/api returns 404, and no /.well-known discovery documents are published.'
url: https://raw.githubusercontent.com/api-evangelist/docin/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- qiming
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Documents
- Document Sharing
- Content
- Publishing
- Education
- China
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/docin-domain-security.yml
- type: Website
  url: https://docin.com
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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