Hidden Door

Hidden Door is an interactive storytelling platform where roleplay meets fan fiction, letting players step into imaginative worlds and shape branching narratives through their choices. Players pick a pre-built world, add modifiers, create a character, and experience a unique story with a full cast of characters, where every playthrough differs. Creators can build playable worlds in as little as thirty minutes, then share, publish, and get paid when others play. The company was surfaced as a portfolio company of Homebrew and Northzone and added to the API Evangelist network. Hidden Door ships a consumer web experience and publishes no developer API, SDK, or developer portal at this time. Sector: AI / entertainment.

Hidden Door is profiled on the APIs.io network. Tagged areas include Company, Ai, Storytelling, Interactive Fiction, and Roleplay.

Hidden Door’s developer surface includes pricing, support, engineering blog, and 4 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

0 APIs

CompanyAiStorytellingInteractive FictionRoleplayGamingEntertainmentUser Generated Content

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 1.3 / 20

Commercial Clarity 6.3 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 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/hidden-door: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: hidden-door
name: Hidden Door
description: 'Hidden Door is an interactive storytelling platform where roleplay meets fan fiction, letting players step into
  imaginative worlds and shape branching narratives through their choices. Players pick a pre-built world, add modifiers,
  create a character, and experience a unique story with a full cast of characters, where every playthrough differs. Creators
  can build playable worlds in as little as thirty minutes, then share, publish, and get paid when others play. The company
  was surfaced as a portfolio company of Homebrew and Northzone and added to the API Evangelist network. Hidden Door ships
  a consumer web experience and publishes no developer API, SDK, or developer portal at this time. Sector: AI / entertainment.'
url: https://raw.githubusercontent.com/api-evangelist/hidden-door/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- homebrew
- northzone
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: '2026-07-19'
image: https://www.hiddendoor.co/icons/icon-512x512.png
tags:
- Company
- Ai
- Storytelling
- Interactive Fiction
- Roleplay
- Gaming
- Entertainment
- User Generated Content
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.hiddendoor.co
- type: Pricing
  url: https://www.hiddendoor.co/pricing
- type: Support
  url: https://www.hiddendoor.co/support
- type: Blog
  url: https://www.hiddendoor.co/blog
- type: TermsOfService
  url: https://www.hiddendoor.co/legal/terms
- type: PrivacyPolicy
  url: https://www.hiddendoor.co/legal/privacy
- type: DomainSecurity
  url: security/hidden-door-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence