# Stoplight

**Canonical:** https://apis.io/providers/stoplight/  
**Website:** https://stoplight.io  
**APIs profiled:** 6

Stoplight is a collaborative, design-first API platform providing a visual editor for OpenAPI specifications, interactive hosted documentation, automatic mock servers, API style guides and governance, and open-source tools including Prism (mock server), Spectral (JSON/YAML linter), and Elements (documentation components). Acquired by SmartBear in 2023, Stoplight is now positioned within SmartBear's API Hub solution group alongside SwaggerHub, with Spectral, Prism, and Elements progressively integrated into the unified API Hub experience. The platform supports OpenAPI v3.1, v3.0, v2.0, Arazzo v1.0, and AsyncAPI v2.x, with integrations for GitHub, GitLab, Bitbucket, and Azure DevOps. The Stoplight status page now redirects to stoplight.status.smartbear.com, confirming the operational consolidation under SmartBear.

## Kin Score — 35.4 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 35.4).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 11.3 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 39.5 |
| Developer Ergonomics | 45.2 |
| Commercial Clarity | 53.9 |
| Access Clarity | 53.9 |

## Agent readiness — 3.0 (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 | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

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

## APIs (6)

- **Stoplight Platform** — Stoplight Platform is a SaaS collaborative API design and documentation management tool providing a visual editor for OpenAPI specifications, interactive hosted documentation, a...
- **Stoplight Prism** — Prism is an open-source HTTP mock and proxy server that turns any OpenAPI v2/v3 or Postman Collection file into a realistic API server with mocking, transformations, and validat...
- **Stoplight Spectral** — Spectral is an open-source JSON and YAML linter for creating automated API style guides and governance rulesets. Provides built-in support for OpenAPI v3.1, v3.0, and v2.0, Araz...
- **Stoplight Elements** — Elements is an open-source toolkit for building beautiful, interactive API documentation from OpenAPI specifications using embeddable React or Web Components. Provides highly cu...
- **Stoplight Studio** — Stoplight Studio is the visual API design and technical writing editor included in the Stoplight Platform. Provides a form-based editor for creating and editing OpenAPI v2 and v...
- **Stoplight CLI** — The Stoplight CLI enables programmatic linting of API descriptions and pushing analysis results to the Stoplight Platform from CI/CD pipelines. Supports analyzing local projects...

## Security (1)

- **Stoplight Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Stoplight Plans Pricing**

## Tags

API Design, API Documentation, API Governance, AsyncAPI, Design-First, Linting, Mock Servers, OpenAPI, SmartBear API Hub, Style Guides

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