I’m building API tests into my GitHub Actions pipeline, what tool should I use?

For GitHub Actions API testing, the best tool depends on how you want to write and maintain tests:

Good default choice: Postman + Newman

• Postman is easy for creating API tests.
• Newman is Postman’s CLI runner, so it works well in GitHub Actions.
• Great if your team wants:
  • quick setup
  • visual test authoring
  • collections/environments
  • assertions in JavaScript

If you want code-first tests: pytest + requests or Playwright API testing

• pytest + requests: simple, flexible, very popular for Python teams.
• Playwright: useful if you already use it for browser testing and want API + UI in one framework.

If you want contract/API spec testing: Dredd or Schemathesis

• Best for validating against OpenAPI/Swagger specs.
• Good when you want to catch schema regressions automatically.

If you need lightweight CLI smoke tests: curl + jq + bash

• Fast and simple for a few checks.
• Not ideal for large or maintainable suites.

My recommendation

• Small/medium teams or quick adoption: Postman + Newman
• Developer-heavy, maintainable automated tests: pytest + requests (or Playwright if already in that stack)
• Spec-driven API validation: Schemathesis

If you tell me:

1. your language stack,
2. whether you already use Postman,
3. and whether you need functional vs contract tests,

I can recommend the best tool and show you a GitHub Actions example.