Model once. Benefit everywhere.

Mock, document, and test your way to API nirvana.

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Powerful API modeling tools

Stop writing thousands of lines of specification code.

Our intuitive visual editors significantly cut down on design time, and are spec agnostic.

Generate OAI (Swagger) and RAML specification code on demand.

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API modeling tools

One click hosted documentation

Easily share your API with the world. StopLight supports one click publishing to the api-docs.io hosting platform.

Full API versioning support included.

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API Docs

Robust HTTP request maker

Quickly send real requests to your API, and stop wasting time with cURL.

Store results privately on your computer, or online when you need to debug a request with a colleague.

Code generation included.

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HTTP request maker

Prism API Proxy

Mock, validate, and transform requests with Prism. Prism is fully integrated into the API Designer.

StopLight runs a hosted instance of Prism for every API in the designer, but you can also download and run Prism locally on any computer or server.

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Prism

For the whole team

Invite engineers, QA, product managers, customer support... and your mom, to collaborate on your API projects.

Since our tools are visually driven, everybody on your team can understand and interact with your API, not just those fluent in technical specifications.

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Automatic API modeling

Have an existing API, but no spec? We've got you covered.

Send your API traffic through Prism proxy, and we'll automatically map out your endpoint and model definitions, saving your team tons of time.

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Simple, flexible pricing



Free for individuals.

Team pricing starts at $8/month/member, for an unlimited number of APIs.

Customers, from startup to enterprise, love StopLight

SendGrid
“StopLight is not only helping me to do my job more efficiently, it is dead simple to use. It makes the delivery preparations steps of documenting the API easy, since the documentation was started before customer validation steps, and is updated throughout the process.”
Matt Bernier, Development Experience Manager, SendGrid
API EVANGELIST
“I feel like it [stoplight] has the potential to shift the landscape pretty significantly, something I haven't seen any API service provider do in a while.”
TWYLA
“What I didn't anticipate was the increased alignment across all stakeholders due to Stoplight creating a focal point for API definition and documentation. My plan to meet the aggressive MVP deadline at Twyla was to begin hiring API developers and outsource design and front-end development. Stoplight allowed us to mock the API so that front-end development could proceed in parallel with API development, always ensuring everyone had realtime updates.”
Douglas Ferguson, VP of Engineer, Twyla
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