REST Assured
Fluent Java DSL for testing REST services inside your existing JVM test suite.
What it is
REST Assured gives Java a given/when/then DSL for HTTP requests and response validation, including JSONPath and XPath assertions, schema validation and authentication helpers. Because it runs inside JUnit or TestNG, API tests live in the same repository and pipeline as the code under test.
Best for
Where it is strong
- API tests live in the codebase, versioned and reviewed with the service.
- Readable given/when/then chains that map directly onto HTTP semantics.
- Full access to Java for setup, data and assertions.
Where it falls short
- Java only, and requires developers rather than manual testers.
- No GUI, so exploratory request work needs a separate client.
- Verbose for very large payload assertions.
Pricing
Free and open source
Open sourceFree tier: Everything, self-hosted
What drives the bill: Free and open source. You pay in engineering time and CI minutes.
Check current pricing on OSS community’s siteFigures are indicative and were last reviewed August 2026. Vendors change pricing often; confirm before you commit.
Works with
What people who use REST Assured say
No reviews of REST Assured yet. If you have used it in anger, yours would be the first.
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