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. The status page now redirects to stoplight.status.smartbear.com, confirming operational consolidation under SmartBear.
URL: Visit APIs.json URL
- Type: Index
- Position: Consumer
- Access: 3rd-Party
- API Design
- API Documentation
- API Governance
- AsyncAPI
- Design-First
- Linting
- Mock Servers
- OpenAPI
- SmartBear API Hub
- Style Guides
- Created: 2026-03-03
- Modified: 2026-05-22
Collaborative API design and documentation management SaaS platform with visual OpenAPI editor, hosted documentation, mock servers, governance, and Git integration. Now part of SmartBear's API Hub solution group.
Human URL: https://stoplight.io
- API Design, API Documentation, API Governance, Design-First, Mock Servers, OpenAPI, SmartBear API Hub, Style Guides
Open-source HTTP mock and proxy server that turns OpenAPI v2/v3 and Postman Collection files into realistic API servers with mocking, transformations, and validations. ~4,943 GitHub stars.
Human URL: https://stoplight.io/open-source/prism
- API Testing, Mock Servers, Open Source, OpenAPI, Postman, Proxy, Validation
Open-source JSON/YAML linter for creating automated API style guides with built-in support for OpenAPI v3.1, v3.0, v2.0, Arazzo v1.0, and AsyncAPI v2.x. Integrates into CI/CD pipelines. SmartBear has integrated Spectral into SwaggerHub for API governance. ~3,115 GitHub stars.
Human URL: https://stoplight.io/open-source/spectral
- API Governance, AsyncAPI, CI/CD, Linting, Open Source, OpenAPI, Style Guides
- Documentation
- GitHub Repository
- NPM
- Docker
- GitHub Action
- VS Code Extension
- Spectral Rulesets
- OWASP Ruleset
- Documentation Ruleset
Open-source toolkit for building interactive API documentation from OpenAPI specs using embeddable React or Web Components. ~2,425 GitHub stars.
Human URL: https://stoplight.io/open-source/elements
- API Documentation, Components, Open Source, OpenAPI, React, Web Components
Visual API design editor for OpenAPI v2/v3 with validation, mocking, and modeling support. Available as web app and desktop application. ~867 GitHub stars.
Human URL: https://stoplight.io/api-design
- API Design, Editor, OpenAPI, Technical Writing
Command-line tool for CI/CD integration of API governance checks and Spectral linting.
Human URL: https://docs.stoplight.io/docs/platform/1e78f9c9bfc1e-stoplight-cli
- CI/CD, CLI, DevOps, Open Source, OpenAPI
| Plan | Annual | Monthly | Users | Projects |
|---|---|---|---|---|
| Free | $0 | $0 | 1 | 1 |
| Basic | $44/mo | $56/mo | 3 (+$11-14/user) | Unlimited |
| Startup | $113/mo | $147/mo | 8 (+$11-14/user) | Unlimited |
| Pro Team | $362/mo | $453/mo | 15 (+$22-27/user) | Unlimited (20 teams) |
| Enterprise | Custom | Custom | Unlimited | Unlimited |
| File | Description |
|---|---|
| stoplight-spectral-ruleset-schema.json | JSON Schema for Spectral ruleset files |
| File | Description |
|---|---|
| stoplight-spectral-ruleset-structure.json | Spectral ruleset file structure documentation |
| File | Description |
|---|---|
| stoplight-context.jsonld | JSON-LD context for Stoplight tooling vocabulary |
| File | Description |
|---|---|
| stoplight-vocabulary.yml | Domain vocabulary for API design, governance, and tooling |
| File | Description |
|---|---|
| stoplight-plans-pricing.yml | API Commons Plans 0.1 pricing structure |
| File | Description |
|---|---|
| stoplight-rate-limits.yml | API Commons Rate Limits 0.1 quotas and throttling |
| File | Description |
|---|---|
| stoplight-finops.yml | FinOps Framework / FOCUS-aligned cost allocation |
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- API Documentation
- Parent Company (SmartBear)
- SmartBear API Hub
Stoplight was acquired by SmartBear in 2023 and is being progressively integrated into SmartBear's API Hub solution group alongside SwaggerHub. SmartBear has realigned 20+ products into three solution hubs: API Hub, Test Hub, and Insight Hub. Spectral, Prism, and Elements are being integrated into SwaggerHub. The stoplight.io domain, blog, pricing page, open-source tools, and documentation remain active and independently branded as of May 2026, though the status page now redirects to stoplight.status.smartbear.com. No formal "Stoplight Spaces" product has been confirmed on the public Stoplight site; SmartBear references this concept in the broader API Hub realignment context.
FN: Kin Lane
Email: kin@apievangelist.com