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Why Karate?

Karate is the only open-source framework that unifies API testing, UI automation, performance testing, and service mocking in a single solution. Teams worldwide choose Karate because it eliminates the complexity of traditional test automation while delivering enterprise-grade capabilities.

Key Benefits​

All-in-One Testing Solution​

Unlike traditional testing frameworks that require multiple tools and complex setups, Karate provides everything you need in one package:

  • API Testing: REST, GraphQL, SOAP, and WebSocket support
  • Performance Testing: Reuse your Karate features as load tests with Gatling integration.
  • UI Automation: Web browser automation with Chrome/Firefox
  • Service Mocking: Create mock services for testing

Tests Read Like Documentation​

Karate uses a simple, English-like syntax based on Gherkin, making tests readable by everyone on your team:

Gherkin
@createPost @smoke @positive
Feature: Create a new post


  Background:
    * url 'https://jsonplaceholder.typicode.com'

  Scenario: Create a post with valid data
    And path 'posts'
    And request 
    """
    {
      "title": "My first post",
      "body": "This is an example post created for testing."
    }
    """
    When method post
    Then status 201
    And match response.title == 'My first post'
    And match response.body == 'This is an example post'

No Programming Knowledge Required​

Even non-programmers can write and understand tests. Scripts are plain-text files that require no compilation or IDE setup. Your entire team can collaborate using Git and standard version control.

No Step Definitions or Glue Code​

Unlike Cucumber, Karate keywords work immediately without separate implementation. Write your test scenario and it executes - no Java step definitions, no Ruby blocks, no JavaScript callbacks.

First-Class JSON and XML Support​

JSON and XML are native citizens - no escaping quotes, no string concatenation, no helper classes:

Gherkin
# Natural JSON syntax without quotes around keys
* def user = { name: 'John', age: 30, active: true }
* match user.name == 'John'

# Direct XML manipulation
* def xml = <user><name>John</name><age>30</age></user>
* match xml/user/name == 'John'

Powerful Assertions in One Line​

Assert entire response payloads, no matter how complex, in a single step:

Gherkin
* match response.user ==
  """
  {
    id: '#number',
    name: '#string',
    email: '#regex ^[A-Za-z0-9._%+-]+@gmail\\.com$',
    created: '#ignore',
    roles: '#array',
    address: {
      street: '#string',
      city: '#regex [A-Za-z ]+',
      zipCode: '#regex \\d{5}'
    }
  }
  """

Data-Driven Testing Built In​

Native support for CSV, JSON, and YAML files for data-driven tests:

Gherkin
@createPost @smoke @positive
Feature: Create a new post

  Background:
    * url 'https://jsonplaceholder.typicode.com'

  Scenario Outline: Create multiple posts with valid data
    Given path 'posts'
    And request { "title": "<title>", "body": "<body>" }
    When method post
    Then status 201
    And match response.title == '<title>'
    And match response.body == '<body>'

    Examples:
      | title             | body                              |
      | Karate DSL        | Karate makes API testing simple.  |
      | Data Driven Tests | Generated using Scenario Outlines |

Parallel Execution​

Multi-threaded parallel execution with zero configuration. Run hundreds of tests in minutes, not hours.

Comprehensive Test Reports​

Built-in HTML reports with request/response logs inline. When tests fail, you see exactly what went wrong without digging through separate log files.

IDE Support and Debugging​

Full-featured debugger that can step backwards and replay steps while editing them. IDE support plugins are a paid feature available for VS Code and IntelliJ, providing syntax highlighting and autocomplete.

Enterprise-Ready​

Proven in Fortune 500 companies with:

  • CI/CD pipeline integration
  • Cross-environment configuration
  • OAuth and complex authentication support
  • Proxy and SSL/TLS handling

Feature Comparison

FeatureKarateREST AssuredPostmanCypressPlaywright
API TestingLimited
UI Testing
Performance TestingLimited
Service MockingLimited
No Coding Required
Parallel ExecutionManualLimited
Data-Driven TestsManualLimitedManualManual
GraphQL SupportManualLimited
Built-in Reports

Karate

API Testing
UI Testing
Performance Testing
Service Mocking
No Coding Required
Parallel Execution
Data-Driven Tests
GraphQL Support
Built-in Reports

REST Assured

API Testing
UI Testing
Performance Testing
Service Mocking
No Coding Required
Parallel ExecutionManual
Data-Driven TestsManual
GraphQL SupportManual
Built-in Reports

Postman

API Testing
UI Testing
Performance TestingLimited
Service Mocking
No Coding Required
Parallel Execution
Data-Driven TestsLimited
GraphQL Support
Built-in Reports

Cypress

API TestingLimited
UI Testing
Performance Testing
Service MockingLimited
No Coding Required
Parallel ExecutionLimited
Data-Driven TestsManual
GraphQL SupportLimited
Built-in Reports

Playwright

API Testing
UI Testing
Performance Testing
Service Mocking
No Coding Required
Parallel Execution
Data-Driven TestsManual
GraphQL Support
Built-in Reports

Who Uses Karate?​

Karate is trusted by teams at leading companies including:

  • Fortune 500 enterprises for mission-critical API testing
  • Startups building modern microservices architectures
  • QA teams transitioning from manual to automated testing
  • Development teams implementing shift-left testing practices

Next Steps​

Ready to get started? Let's install the dependencies you'll need to begin using Karate.

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