# Hidden Door

**Canonical:** https://apis.io/providers/hidden-door/  
**Website:** https://www.hiddendoor.co  
**APIs profiled:** 0

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.

## Kin Score — 12.7 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 12.7).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 7.1 |
| Commercial Clarity | 31.6 |
| Access Clarity | 31.6 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Hidden Door Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Artificial Intelligence, Storytelling, Interactive Fiction, Roleplay, Gaming, Entertainment, User Generated Content

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/hidden-door/). Scores are computed from the provider's own public artifacts under a published rubric.