Prompt
What tool should I use to test REST APIs in CI?
Latest observation
Oct 6, 2026
OpenAI APIWeb search: off
For testing REST APIs in CI, a strong default choice is Postman + Newman.
Why
- Postman is easy to create and maintain API test collections.
- Newman is Postman’s CLI runner, so it works well in CI pipelines like GitHub Actions, GitLab CI, Jenkins, etc.
- You can run assertions, pass environment variables, and generate reports.
Good alternatives
- REST Assured — best if your team already writes tests in Java.
- pytest + requests — good for Python shops and custom test logic.
- Karate — very strong for API testing, especially if you want a readable DSL and easy CI integration.
- pytest + Schemathesis — great if you want property-based / contract-style testing from an OpenAPI spec.
- k6 — better if you also want performance/load testing, not just functional checks.
Quick recommendation
- Most teams: Postman/Newman or Karate
- Java-heavy teams: REST Assured
- Python-heavy teams: pytest + requests
- Need load + API testing: k6
If you want, I can recommend the best tool for your stack (language, CI system, and whether you have an OpenAPI spec).