Specmatic is an open-source tool that brings contract-driven development to your software delivery pipeline. It enables teams to build, test, and integrate microservices with confidence using contracts-as-tests, based on the OpenAPI/Swagger specification.

We help developers shift API testing left, remove dependencies on downstream systems, and enable faster, more reliable CI/CD pipelines.

• Contract Testing: Validates if services adhere to their OpenAPI contracts.
• Service Virtualization: Mocks downstream services to enable independent testing.
• Dynamic Test Generation: Generates test cases from OpenAPI contracts.
• Kafka Contract Testing: Supports testing of event-driven systems with Kafka.

• specmatic/specmatic: The main CLI and Java library for contract-driven development.

• Full list of sample projects

• Specmatic Insights GitHub build reporter action

• 🌐 Official Website
• 📚 Documentation
• 🎥 YouTube Channel
• 🧑‍🤝‍🧑 Community Discussions

We welcome contributions! If you'd like to submit a fix, suggest a feature, or improve the docs, check out the contributing guidelines in each repository.

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