REST API Design Tool For Planning & Modeling Software

Build first-class APIs with a collaborative, powerful, visual editor that allows you to prototype and share your API within minutes using Stoplight's API design tools.

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OpenAPI Designer

Start designing API in minutes using Stoplight’s API designer and API design tool. Use the OpenAPI Specification (formerly known as Swagger) with Stoplight’s visual editor to design consistent and standardized REST APIs for your organization. Without writing any code, model and design APIs faster than ever while simultaneously getting feedback on your prototypes with our hosted mock servers.

Quick to Start

Get started quickly with API design-first principles. Import an existing API or start from scratch with a new API, zero coding required. The Visual Editor reduces time to get started on your API design by providing an intuitive UI.

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Powerful, Visual Editor

Design an API with speed and efficiency from scratch. Stoplight’s Visual Editor decreases the learning curve so you don’t need to be an OpenAPI expert to create first-class API designs. Describe endpoints, headers, bodies, multiple responses, query string parameters, shared models, and much more whilst designing APIs.

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Integrated Mock Servers

Instantly prototype and collaborate on your API design with our integrated, hosted Mock Servers, powered by Prism. Mock a single API, multiple APIs, or even just a few endpoints. Increase efficiency by allowing your frontend teams to start implementation while the backend team develops the API.

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Ready to Start Designing APIs?