🤖 Announcing SmartTests: AI powered Contract Testing. Read our CTO's Blog Post here!

Choose SmartTests over Pact for Zero-Maintenance Contract Testing

No contract maintenance required
Test with real dependencies in Kubernetes
Setup in minutes, not days
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Pact requires constant maintenance as your APIs evolve. SmartTests eliminates this burden entirely.

Traditional contract testing tools like Pact were built for a different era. As your microservices grow and APIs evolve rapidly, the maintenance overhead becomes a bottleneck that slows down development rather than enabling it.
Use cases and capabilities
SmartTests vs. Pact
SmartTests
Complete AI-Powered Solution
Reality-based testing with real dependencies
Contract Testing
AI automatically detects breaking changes without explicit contracts
Zero Maintenance
Tests adapt to API changes automatically
Kubernetes-Native
Built specifically for cloud-native microservices
Pact
Mock-Based Testing Focus
Consumer-driven contract definitions
Contract Testing
Manual contract definitions between consumers and providers
Contracts need constant updates as APIs evolve. Requires mock services for all dependencies. Not optimized for Kubernetes.
SmartTests offers a fundamentally different approach to contract testing - using AI to detect breaking changes in real environments rather than maintaining complex mock-based contracts that quickly become outdated.
Test Real APIs, Not Mocks
From web to mobile frontends, generate on-demand previews that let your team test earlier and deploy with confidence.
AI Finds What Matters
Don’t waste time waiting—Signadot delivers previews in seconds while competitors take minutes, keeping your engineering velocity high.
Zero Contract Maintenance
Testing across pull requests without duplicating environments cuts down cloud costs dramatically.
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Testimonials

Hear From Our Clients

With Neon's rapid growth, maintaining key DORA metrics and production SLO became a challenge. Signadot's Sandboxes solution transformed our CI/CD pipelines, reducing costs and enabling effective testing. Now, we can confidently make risky changes, fostering a culture of performance-oriented engineering.
Venkat Karun
Distinguished Engineer and SĂłcio
I want staging to be in a state where I'm able to push to production any day I want. The quality should be as good as prod so that I don't have to do more work after merging. This is exactly what Signadot allows us to do today.  We're now running tests before merging, which means cleaner code and  fewer rollbacks.
Buchi Reddy
CEO
Our vision when we started talking to Signadot was that we wanted to have the same stack for testing and production. Signadot has allowed us to do just that, bringing down the lead time for our developers to test changes from 30 minutes to literally 60 seconds.
Amit Gud
Software Engineer

See How We Compare

From API changes to breaking change detection in minutes. Our AI-powered workflow automatically identifies contract violations while you focus on development - no mock maintenance required.
Feature
SmartTests
Pact
Testing Approach
AI-powered API diffing with real services
Consumer-driven contracts with mocks
Maintenance
Zero - tests auto-adapt
High - contracts need constant updates
Test Environment
Real dependencies in Kubernetes sandboxes
Mock services and providers
Setup Complexity
Minutes with simple HTTP requests
Days/weeks with detailed contract specs
Team Coordination
Minimal - no contract exchange needed
Significant - consumer/provider coordination
Breaking Change Detection
AI identifies meaningful changes automatically
Manual definition of what breaks
Future Roadmap
Performance, security, log testing planned
Focused on contract testing only
Testing Microservices Doesn’t Have to Be a Bottleneck.
Let Us Help.
Your team’s challenges are unique, and so are our solutions. Let’s work together to streamline your testing process—no pressure, just a conversation with engineers who understand your needs.
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Build by Developers,
for Developers
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Integrate with CI tools you already use
Without Signadot, developers were experiencing frequent rollbacks of code due to issues discovered late in the staging environment. Now, the developers have much more confidence in what they are deploying, resulting in fewer breaks on production.
Devarshi Khanna
Backend Developer at ShareChat
How is SmartTests different from Pact?

SmartTests uses AI to automatically detect API changes by comparing real service behavior, while Pact requires manually written contracts with mock services. This eliminates maintenance overhead and false positives.

Can SmartTests work alongside Pact?

Yes. Many teams start SmartTests with new services or high-change APIs while keeping existing Pact tests, then gradually migrate as they see the benefits.

What if I need custom test scenarios?

SmartTests currently focuses on realistic API testing. For edge cases requiring mocks, we're building auto-generated mock capabilities based on real traffic patterns - making it simpler than manual mock setup.

Does SmartTests only work in Kubernetes?

Currently yes. SmartTests is built specifically for Kubernetes to leverage sandboxes for isolation. This provides superior testing fidelity for cloud-native applications.

What API protocols are supported?

Currently we support http REST APIs. Support for other protocols like gRPC and GraphQL are coming soon. Feel free to file feature requests in our community GitHub project https://github.com/signadot/community.

How does CI integration work?

You can checkin SmartTests in your git repository and use our CLI in your Pull Request workflow to run SmartTests against Sandboxes. Refer to our docs https://www.signadot.com/docs/guides/smart-tests/contract-tests for more info.

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