SpecificationsCommercial✦ Free Tier

Stoplight

Visual API design platform with linting, mocking, and docs built in

Dev Productivity
Open in Builder →Website ↗

About

Design-first platform for creating, governing, and documenting OpenAPI specifications. Bundles a visual editor, Spectral (JSON/YAML linter), Prism (mock server), and Elements (docs renderer) into one workflow. Teams use it to enforce API style guides across large API portfolios.

Choose Stoplight when…

  • •You want a visual API design and documentation studio
  • •Design-first API development with mocking is your workflow
  • •You need collaborative API design for a team

Builder Slot

How do you define what you're building?Optional for most stacks

Spec writing, API design, architecture diagrams, and contract-first tooling — the upstream layer before code is written

Dev Tools
Optional
App Infra
Optional
Hybrid
Optional

Other tools in this slot:

Spec KitMermaidEraserStructurizrSwagger / OpenAPIRedoclyAsyncAPISpeakeasy+3 more

Integrates with (2)

SpeakeasySpecifications

Speakeasy generates SDKs from OpenAPI specs designed and validated in Stoplight Studio.

→ SDK generation from a visually designed, validated spec — Stoplight handles spec authoring, Speakeasy handles code generation.

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FernSpecifications

Fern reads OpenAPI specs from Stoplight, generating SDKs from specs that have been visually authored and validated.

→ Visual API design in Stoplight feeds directly into Fern's SDK generation pipeline — design once, generate everywhere.

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Alternatives to consider (2)

Swagger / OpenAPIcompare →Redoclycompare →

Pricing

✦ Free tier available
Starter$49/mo
Professional$149/mo

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