Adopt API-first design
without slowing down

Design APIs in a visual editor that bridges between product and engineering. Criteria generates best-practice OpenAPI (Swagger) definitions that are ready to publish or hand to developers.

Get your personalized API design guidelines

Create API design guidelines and accompanying documentation in minutes, fully customized for your engineering team.

Spectral ruleset YAML fileStyle guide documentation
Screenshot of Spectral ruleset and corresponding Markdown documentation.

Find out how Criteria can help you adopt API-First Design easily

Book a 30-minute demo session where we'll learn more about your business and show you how to accelerate your API delivery without sacrificing quality.

Automatic API governance that doesn’t require teams to ramp up.

Transitioning from code-first to API-first design is hard enough already. Many API champions report that the hardest part of their role is getting buy-in and alignment from other developers.

Criteria generates best-practice OpenAPI definitions that automatically conform to your organization's API governance policies. Developers can focus on writing business logic without having to learn the the correct syntax for OpenAPI or memorize all the details of your API style guide.

Screenshot of Criteria Playground API documentation
Criteria Playground API documentation showing the generated documentation for a request with request body schema, example cURL code and response body JSON data.
Screenshot of Criteria Playground API documentation
Criteria Playground API documentation showing the generated documentation for a request with request body schema, example cURL code and response body JSON data.

A single API design tool to take you from requirements to code.

No matter how well you design your API upfront, it is common for it to change once development begins. Many teams take this as a sign that API-first design is not worth it since any design artifacts will quickly become out of date.

Describe APIs at a high level with product managers, customers and other stakeholders. Fill in the technical details when you're ready. Criteria ensures your outward-facing documentation stays up to date, even when you make changes to the API during development.

Automatic API documentation

Developers expect comprehensive, easy-to-read documentation from API products, but your team probably lacks capacity to invest in documentation.

Generate documentation from your OpenAPI definition in an instant. The content is derived from your design artifacts, so it will never get out of date.

Screenshot of Criteria Playground API documentation
Criteria Playground API documentation showing the generated documentation for a request with request body schema, example cURL code and response body JSON data.

From the blog

Product announcements, industry news and API design best practices from Criteria