Unified API, UI, and AI test automation — open source, self-hosted, enterprise-ready.
Featured in the Gartner® Market Guide for API & MCP Testing Tools, March 2026The Problem
Different tools for API tests, UI tests, mocks, and performance
Verbose code that takes longer to write than the feature itself
Tests that break every time you refactor, slowing your team down
The Karate Way
Unified framework for API, UI, mocks, and performance tests
Readable, concise syntax that anyone on the team can understand
Built-in parallel execution, reporting, and CI/CD integration
Replacing Selenium, REST-assured, or Postman? One framework for REST, GraphQL, SOAP, Kafka, gRPC, WebSocket, and browser testing.
Explore the frameworkSelf-healing tests with display-text locators. BYO LLM. Scripted flows run in ~30s, LLM recovers only on failure. 72x fewer page scans.
Discover Karate AgentSSO, SAML, audit logs, offline licensing, and dedicated support. 100% local — your data never leaves your infrastructure.
Talk to SalesTrusted by teams at 650+ companies · 76 Fortune 500
Recognized by analysts, reviewers & developers
Featured in the Gartner® Market Guide
API & MCP Testing Tools · March 2026
View on GartnerReviewed on G2
Software Testing · API Testing category
Read reviews on G28,834+ GitHub stars
10 years open source · 2M+ monthly downloads
Star on GitHubCapabilities
From REST APIs to browser automation to load testing — Karate handles it all with a single, consistent syntax.
Test REST, GraphQL, and SOAP APIs with built-in JSON/XML assertions, schema validation, and data-driven scenarios.
Given url 'https://api.example.com'
When method get
Then status 200
And match response == { id: '#number' }
Automate browsers and desktop apps with simple, readable commands. Built-in waits, retries, and visual testing.
Given driver 'https://app.example.com'
When input('#email', 'test@test.com')
And click('{^}Submit')
Then waitFor('.dashboard')
Re-use your API tests as performance tests. Run thousands of concurrent requests with built-in Gatling integration.
// Re-use existing API test
// as a performance scenario
import { karateFeature } from 'karate'
karateFeature('users.feature')
.atOnce(100)
Everything your organization needs to adopt test automation at scale, with enterprise-grade security and support.
Integrate with your existing identity provider. SAML 2.0, OIDC, and LDAP support.
Fine-grained permissions for teams, projects, and environments.
Complete visibility into who did what, when. Export-ready for compliance.
Security controls and processes that meet enterprise compliance requirements.
Named account manager, SLA-backed response times, and onboarding assistance.
Deploy in your own cloud or on-premise. Your data never leaves your infrastructure.
Partners & Integrations
Karate plugs into the tools your team already uses — from cloud runtimes and CI/CD pipelines to IDEs, reporting, and protocols. No vendor lock-in, no rewrites.
30+
Native integrations
15+
Protocols & formats
Any
Cloud or CI/CD
Don't see your tool? Tell us what you need.
See the Difference
Compare the same API test written with a traditional framework versus Karate.
import io.restassured.RestAssured;
import static io.restassured.RestAssured.*;
import static org.hamcrest.Matchers.*;
public class UserTest {
@Test
public void testCreateUser() {
RestAssured.baseURI = "https://api.example.com";
String body = "{" +
"\"name\": \"John\"," +
"\"email\": \"john@test.com\"" +
"}";
given()
.contentType("application/json")
.body(body)
.when()
.post("/users")
.then()
.statusCode(201)
.body("name", equalTo("John"))
.body("id", notNullValue());
}
}
Feature: User API
Scenario: Create a new user
Given url 'https://api.example.com/users'
And request { name: 'John', email: 'john@test.com' }
When method post
Then status 201
And match response.name == 'John'
And match response.id == '#notnull'
80%
Faster test authoring
60%
Less code vs alternatives
10x
Faster with parallel execution
What Teams Are Saying
“Ease of setup, ease of writing tests even for juniors, and the fact that it uses Gherkin allows everyone to understand the tests.”
Lina K.
Head of QA · Capterra verified
“Well documented and well supported. The DSL is so simple to learn. Offers a full range of automation capabilities: client-side assertions, server-side mocks and simulators, even performance testing.”
Anthony S.
Team Lead / Principal Engineer · Capterra verified
“An excellent tool in all sense. Used it for both API and UI automation. Found it amazing with parallel execution, negligible flakiness, and code-less automation.”
Kanishka J.
QA Automation Lead · Capterra verified
Join thousands of developers who contribute to and rely on Karate every day. Star us on GitHub, submit a PR, or just say hello.
8,834+
GitHub Stars
350+
Contributors
2M+
Downloads