Contents First

Contents First, Inc. is a Seoul-based digital storytelling company founded in January 2013 to bring Korean webtoon, webnovel, entertainment and game IP to global readers. It operates Tappytoon, a premier digital-first webtoon and webnovel platform launched in August 2016 that serves more than 8 million readers across 241 countries in English, French and German, with over 450 million chapter views to date. Contents First produces and licenses original IP through in-house Tappytoon Studio and its affiliate production studios Maru Comics, C&C Revolution, and Studio Alive (a joint venture with Redice Studio). The corporate site publishes a company narrative and a media room; no developer portal, public API, or machine-readable contract (OpenAPI, AsyncAPI, GraphQL, MCP) is advertised. Media contact meetus@contentsfirst.com, business contact corp@contentsfirst.com.

Contents First is profiled on the APIs.io network. Tagged areas include Company, Data, Integration, Platform, and Webtoon.

🌐 Visit website 📡 Profile data on GitHub

4.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

0 APIs

Company Data Integration Platform WebtoonWebnovelEntertainment Media Content South Korea

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 4.3/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 0.9 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

13 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 0.0 — up to +20.0 composite points
Access Clarity scores 0.0 — up to +20.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/contentsfirst/apis.yml: open an issue on github.com/api-evangelist/contentsfirst to ask a question or point us at an artifact you publish. 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.

Contentsfirst Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 2

The organization behind the API

Website

Website

Newsroom

Newsroom

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: contentsfirst
name: Contents First
description: Contents First, Inc. is a Seoul-based digital storytelling company founded in January 2013 to bring Korean webtoon,
  webnovel, entertainment and game IP to global readers. It operates Tappytoon, a premier digital-first webtoon and webnovel
  platform launched in August 2016 that serves more than 8 million readers across 241 countries in English, French and German,
  with over 450 million chapter views to date. Contents First produces and licenses original IP through in-house Tappytoon
  Studio and its affiliate production studios Maru Comics, C&C Revolution, and Studio Alive (a joint venture with Redice Studio).
  The corporate site publishes a company narrative and a media room; no developer portal, public API, or machine-readable
  contract (OpenAPI, AsyncAPI, GraphQL, MCP) is advertised. Media contact meetus@contentsfirst.com, business contact corp@contentsfirst.com.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: none
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://www.contentsfirst.com/images/hero.jpg
url: https://raw.githubusercontent.com/api-evangelist/contentsfirst/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (identity module re-run; corrected name, description, tags, image, pointers and
  x-coverage)
specificationVersion: '0.20'
created: '2026-10-10'
modified: '2026-11-04'
tags:
- Company
- Data
- Integration
- Platform
- Webtoon
- Webnovel
- Entertainment
- Media
- Content
- South Korea
tags_raw:
- Company
- Data
- API
- Integration
- Platform
- Webtoon
- Webnovel
- Entertainment
- Media
- Content
- Korea
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.contentsfirst.com
- type: Newsroom
  url: https://www.contentsfirst.com/media/
- type: GitHubOrganization
  url: https://github.com/tappytoon
- type: Hosts
  url: hosts/contentsfirst-hosts.yml
- type: Vendors
  url: vendors/contentsfirst-vendors.yml
- type: DomainSecurity
  url: security/contentsfirst-domain-security.yml
apis: []
x-coverage:
  state: none
  reason: no-developer-program
  detail: Contents First is the corporate site for a Seoul webtoon/webnovel holding company (parent of consumer platform Tappytoon);
    it publishes no API, no developer portal, and no docs host, and the standard contract paths on www.contentsfirst.com (/openapi.json,
    /swagger.json, /asyncapi.yaml, /graphql, /mcp) all return 404 while api.contentsfirst.com and developers.contentsfirst.com
    do not resolve in DNS.
  evidence:
  - url: https://www.contentsfirst.com/openapi.json
    status: 404
  - url: https://www.contentsfirst.com/swagger.json
    status: 404
  - url: https://www.contentsfirst.com/asyncapi.yaml
    status: 404
  - url: https://www.contentsfirst.com/graphql
    status: 404
  - url: https://www.contentsfirst.com/mcp
    status: 404
  checked: '2026-11-04'
x-enrichment:
  date: '2026-11-04'
  status: nochange
  artifacts_added: 0
  pass: modular-v1
  engine: identity=anthropic,contract=anthropic,surfaces=anthropic,docs=anthropic,regulatory=anthropic

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