API testing built for continuous integration
Import your Postman collections and utilize mabl’s automated API testing to run them in your CI pipeline on every commit. Chain API calls into your E2E web and mobile flows for full-stack coverage from a single test suite.
From contract testing to full-stack E2E
Build one picture of app quality
Bring your existing Postman collections into your web or mobile suite with one import. Your API definitions maintain, without rewriting or duplicating efforts.
Chain API and UI tests
Use API calls to set up test state before UI flows run, or validate backend state after user actions complete.
Trigger tests in-pipeline
Run API tests from GitHub Actions, GitLab CI, or Jenkins. Tests run in parallel across unlimited cloud agents, and results report back to your PR with pass/fail status checks.
Validate schemas and contract tests
Validate API responses against expected schemas to catch changes that are breaking response structures before they affect the front-end.
Build functional E2E API tests
Test complete user journeys through API calls alone with no UI required. Fast, lightweight coverage for critical paths that don't need a browser to validate.
Get to the root cause
API failures are automatically analyzed, examining request and response data, checking for environmental causes, and surfacing a root cause summary.
One picture of functional quality
API test results appear alongside web and mobile coverage in the same dashboard, providing a single view of your application's health.
API coverage that actually runs in your pipeline
See how mabl integrates API testing with your E2E flows and CI, without a separate tool or maintenance burden.
Frequently Asked Questions
What is API testing?
API testing checks that an application’s interfaces return the right data, status codes, and response structures, without going through the UI. It’s faster than browser testing and catches backend problems early. mabl runs API tests alongside web and mobile tests in one suite.
Should API and UI tests run in the same test suite?
Often, yes. Keeping them together gives one picture of application quality and lets API calls set up or verify state around UI flows. In mabl, API results appear alongside web and mobile coverage in the same dashboard, from a single test suite.
How often should API tests run?
On every commit, since API tests are fast enough not to slow the pipeline. Frequent runs catch breaking changes close to the code that caused them. mabl runs API tests in parallel from GitHub Actions, GitLab CI, or Jenkins, with status checks on your PR.
Can you automate existing Postman collections?
Yes. Instead of rewriting API definitions, import the collections you already maintain and run them automatically. mabl imports Postman collections into your web or mobile suite in one step, then runs them in your CI pipeline on every commit.
When should you test a user journey through APIs alone?
Use API-only journeys for critical paths where the business logic matters more than the interface, like order processing or account updates. They run faster and break less often than browser tests. mabl supports functional end-to-end API tests that need no UI.
