# Mirage JS

**Canonical:** https://apis.io/providers/mirage-js/  
**Website:** https://miragejs.com/  
**APIs profiled:** 1

Mirage JS is an open source API mocking library for JavaScript that lets you build, test, and share complete frontend features without depending on a backend. It runs alongside your frontend code as in-browser middleware, providing a built-in database, factories for seeding data, route handlers, and serializers. It is framework-agnostic and works with React, Vue, Angular, Ember, and any modern test runner. Mirage JS is itself a library (not a hosted REST API), so this entry indexes its documentation and project resources.

## Kin Score — 10.8 / 100 (minimal)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 10.8).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 4.8 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 2.5 (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 | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (1)

- **Mirage JS** — Mirage JS is a JavaScript library for mocking APIs. It enables frontend developers to build complete features, write realistic tests, and share working prototypes without a real...

## Security (1)

- **Mirage Js Domain Security** — TLSv1.3 · HSTS

## Plans (1)

- **Mirage Js Plans Pricing**

## Tags

API Mocking, Testing, JavaScript, Open-Source

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