OpenAPI-driven API and microservices quality

Generate provider and consumer-driven contract tests from OpenAPI specs. Check both the API and spec file. Get insights into quality patterns across large API and microservices programs.

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More easily manage microservices test case complexity

Adding even a single microservice on top of existing microservices can create hundreds of new ways that APIs can interact. Test maintenance can get out of hand quickly. Sauce Labs Contract Testing can help.

Deploy microservices with confidence

Easily update contract tests whenever spec files are changed. Plan microservices sprints with shareable insights. Diagnose and debug quickly. View historic quality trends.

Generate mocks from OpenAPI specs

Ready to scale integrations and microservices? Generate API mocks for consumer-driven contract testing from a single source of API truth: your OpenAPI specifications.

Provision only what you need

Manage risk at every stage of development by extending contract tests into API functional and load tests or monitors that can run in any environment.

What our customers are saying

Hear why developers and testers love Sauce API Quality


Thanks to Sauce Labs, we are able to ensure that our apps work on over 700 browser/ OS combinations, 172 device emulators and over 300 unique real devices.

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Pranav Verma

Sr. Engineering Manager

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Integrating Contract Testing in a Continuous Integration Pipeline video


Integrating contract tests in a continuous integration pipeline

Start using Sauce API Contract Testing with Mocking in only minutes with this easy technical overview. See how quickly you can generate contract tests from OpenAPI spec files and easily extend contract tests into functional, integration and load tests.

Features of API contract testing

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Security and compliance

After more than 5 billion tests, enterprise customers have long trusted Sauce Labs to take testing security and compliance very seriously. Sauce Labs offers certification across ISO 27701, 27001 and SOC 2 Type 2.

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Scalable test automation

The world runs on integrations and microservices. But runaway test complexity makes it hard to achieve quality at speed. Only Sauce Labs helps you tackle the complexity by testing smarter, not harder via unified insights and predictive capabilities.

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No seat-based pricing

API-first and microservices development require shifts in how we work. Only Sauce Labs frees managers to make agile changes among distributed teams and contractors without worrying about disruptions due to slow onboarding and seat licenses.


Contract testing resources

Resources to help you get started and learn more about API testing and contract testing

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