Keploy
Turn real API traffic into test cases instantly — no more writing tests from scratch.
Best AI Tool for Automated API Testing & CI/CD Pipelines
Category: AI Test Automation, API Mocking, CI/CD Testing
Website: https://keploy.io
Free Plan: Yes
Best For: Developers, QA teams, SDETs, DevOps, microservice-based apps
Rating: ★★★★☆ (4.9/5 based on test automation, integration ease & community)
Problem
Manually writing and maintaining unit, integration, and API tests slows down development cycles—especially in fast-paced CI/CD environments. QA teams and developers struggle to keep up with regressions, API changes, or evolving service dependencies. Test coverage often suffers, and bugs slip into production.
That’s why automated test generation tools with API traffic replay and mocking are game-changers. And Keploy stands out as one of the most efficient open-source AI testing tools available today.
What is Keploy?
Keploy is an AI-powered test automation tool that captures live API traffic and auto-generates test cases and mocks. It’s completely free and open-source—built for devs and QA teams who want robust testing without writing code from scratch.
Keploy helps engineering teams automate testing during development and in CI/CD pipelines, making it ideal for microservices, REST APIs, and scalable cloud apps.
How Does Keploy Work?
It works in 3 steps—no test script writing needed:
Record API Traffic:
Keploy observes incoming and outgoing HTTP calls using eBPF tracing.Generate Tests & Mocks Automatically:
Converts API payloads into unit tests, integration tests, and mocks.Replay During CI/CD:
Automatically replays captured test cases in CI/CD workflows to catch regressions.
💡 You can connect Keploy to your GitHub Actions, GitLab CI, Jenkins, or any modern CI/CD pipeline.
Key Features & Benefits
✅ Fully Automated Test Generation
Turn live API traffic into ready-to-run unit and integration tests.
✅ Record & Replay in CI/CD
Replay tests in your CI/CD pipeline to catch regressions instantly.
✅ Mock External Dependencies
Simulate APIs and databases to run tests in isolation without flaky mocks.
✅ Language & Framework Agnostic
Supports Node.js, Java, Go, Python, and more.
✅ Easy Setup, No SDK Required
Plug Keploy into your existing app with minimal configuration—no code changes needed.
✅ Realistic Test Coverage
Get test cases that reflect real-world use, not hypothetical inputs.
Use Cases & Applications
Developers: Replace manual test writing with AI-generated coverage.
QA Teams: Boost productivity with real-world scenario testing.
SDETs & Test Engineers: Automate regression and API testing.
DevOps & CI/CD: Validate builds using test replays from live traffic.
Engineering Managers: Improve release confidence with better test visibility.
Who Should Use Keploy?
Backend/API developers maintaining microservices
QA testers aiming for faster test cycles
DevOps teams managing CI/CD pipelines
Agile teams needing test automation with minimal effort
Startups & enterprises looking to scale automated testing without added costs
Pricing & Plans
| Plan | Best For | Monthly Price | Key Features |
|---|---|---|---|
| Free | Beginners & Solo Devs | $0 / month | – 1 seat – 200 test suite generations/month – 400 suite runs/month – 3 AI assertion fixes – Shared CI/CD runner – Community support |
| Team (Popular) | Small Dev Teams (3+ users) | $19 / user / month | – Min 3 seats – 1,000 suite gens/month – 2,000 suite runs/month – 100 AI fixes/month – 2 parallel runners – Role-based access – Basic analytics – Email support |
| Scale | Mid to Large Teams | $499 / workspace / month | – 15 seats included – 10,000 suite gens/month – 20,000 runs/month – 1,000 AI fixes/month + auto-heal – Dedicated runners – Release dashboards – IP allow-listing – Priority roadmap access – Jira/ServiceNow integrations |
| Enterprise | Custom, High-Security Needs | Custom (Contact Sales) | – Unlimited seats – 100,000 suite gens/month – 200,000 runs/month – Unlimited AI fixes – Private runners – BYO-LLM & private deployment – SOC 2, ISO, GDPR compliant – Dedicated CSM & private Slack – SSO, SCIM, MCP Agent |
Support & Integrations
🧾 Official Docs: docs.keploy.io
💬 Support: Join here
🔌 Works with:
GitHub Actions, GitLab, Jenkins
REST APIs
Node.js, Python, Go, Java
MongoDB, Postgres, MySQL (via eBPF mocking)
Frequently Asked Questions (FAQ)
No. Keploy auto-generates tests from API traffic.
Yes, it works out of the box with most CI/CD tools.
Keploy supports scalable setups and will soon offer multi-repo test syncing.
Yes. It captures and replays both API requests and database interactions.
Useful Links
Performance Rating Breakdown
| Metric | Score (Out of 5) |
|---|---|
| Automation & Ease of Use | 4.8 |
| CI/CD Integration | 4.9 |
| Test Coverage Quality | 4.7 |
| Value for Developers | 5.0 |
| Mocking Capability | 4.6 |
| Documentation & Support | 4.5 |
| Language & Stack Compatibility | 4.8 |
Final Thoughts
If you’re tired of writing boilerplate tests or maintaining flaky mocks, Keploy is a must-try. It’s one of the best AI tools for automated testing available today—especially for teams working with microservices, REST APIs, or CI/CD environments.
From test generation to mock creation and CI/CD replay, Keploy delivers end-to-end coverage with zero manual scripting. Best of all? It’s open-source and completely free.
