REST Assured

API

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Freedom report

Two barsScore 6.2

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely0 of 6 device platforms
DocumentedPlans, terms and facts published

REST Assured is ranked #16 of 35 in API testing tools on Freedom251. It runs on API. There is a free plan.

REST Assured plans and pricing

All plans

REST Assured Free Open source Java library · no paid plans stated github.com · 4 Oct 2026

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The record

Purpose: REST Assured is a Java DSL for simplifying tests of REST based services.
HTTP methods: It explicitly supports POST, GET, PUT, DELETE, OPTIONS, PATCH and HEAD requests.
Response checks: It can validate and verify response data, including response bodies, headers, cookies and status.
JSON and XML: The project provides JsonPath and XmlPath modules to parse JSON and XML documents.
Schema validation: A separate JSON Schema Validator module can check whether a JSON response conforms to a JSON Schema.
Spring support: Separate modules support testing Spring MVC controllers and Spring WebFlux reactive controllers.
Language extensions: The project offers Scala support and Kotlin extension modules.
Build tools: The getting started guide provides Maven and Gradle dependencies, plus an SBT example for Scala.
Authentication: The usage guide documents Basic, Digest, Form and OAuth authentication mechanisms.
Security reporting: The project asks reporters to submit vulnerabilities privately through GitHub’s private vulnerability reporting channel.
Security support limit: Security fixes target the latest release line, and the project asks that issues be reproduced on the most recent release.
Support: The repository directs users to a Google Groups mailing list for questions and support.
License: The repository identifies its license as Apache License Version 2.0.
Maintainer and sponsor: The project site says Johan Haleby maintains REST Assured with contributors and that Parkster sponsors the project.
Price from: Free

Where it ranks on Freedom251

Best API Testing Tools in 2026#16 of 35

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Sources

github.com/rest-assured/rest-assured/wiki/Usage· checked 4 Oct 2026
github.com/rest-assured/rest-assured/wiki/GettingS· checked 4 Oct 2026
github.com/rest-assured/rest-assured/blob/master/S· checked 4 Oct 2026
github.com/rest-assured/rest-assured· checked 4 Oct 2026
rest-assured.io· checked 4 Oct 2026