API Tester Tool
Test any API effortlessly with robust response analysis.
Parameters
Headers
Body
Authentication
💡 Pro tip: For testing JSON APIs, make sure to select "JSON" as the content type and format your JSON properly. The tool will automatically add the correct Content-Type header.
🪙 Cost: 1 token per request
Our API Tester provides a straightforward, powerful platform for developers and testers to validate APIs without complex setup. Whether you’re working with REST, SOAP, or GraphQL, our tool helps you quickly verify endpoints, analyze responses, and troubleshoot issues with confidence.
Why Choose Our API Tester?
Intuitive Interface, Powerful Features
Designed with both beginners and experienced developers in mind, our API Tester combines simplicity with professional-grade functionality:
- Method Support: Test all standard HTTP methods (GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS)
- Real-Time Response Data: View status codes, headers, and response body instantly
- Request Customization: Add headers, parameters, authentication, and body content with ease
- Response Validation: Verify correct data structures and content
Comprehensive Testing Capabilities
Advanced Request Configuration
- Set custom headers, cookies, and query parameters
- Configure timeout and redirect settings
- Add authentication (Basic, Bearer Token, API Key, OAuth)
- Format request bodies in JSON, XML, Form Data, or raw text
Detailed Response Analysis
- Response timing measurements
- Header inspection
- JSON and XML formatting with syntax highlighting
- Error identification and troubleshooting guidance
Security Testing Features
- SSL certificate validation
- Authentication testing
- CORS verification
- Content security assessment
How to Use the API Tester
1. Enter Your API Endpoint
Start by entering the URL of the API endpoint you want to test. Our tool accepts both HTTP and HTTPS URLs.
2. Select Request Method
Choose the appropriate HTTP method for your request (GET, POST, PUT, DELETE, etc.).
3. Configure Request Details
Add any necessary headers, parameters, authentication credentials, or body content required by your API.
4. Send Your Request
Click the “Send Request” button to initiate the API call. Our tool handles the connection and presents the results.
5. Analyze the Response
Review the detailed response information, including:
- Status code and message
- Response time
- Headers received
- Formatted response body
- Any errors or warnings
Experience the simplicity and power of our API Testing Tool. Start testing your APIs now and ensure they’re functioning exactly as expected!
Frequently Asked Questions
Find answers to common questions about this tool
What is an API Tester and why would I need one?
An API Tester is a specialized tool designed to send requests to Application Programming Interfaces (APIs) and analyze the responses. You would need an API Tester when developing, integrating, or troubleshooting applications that communicate with APIs. Our API Tester allows you to verify that APIs are functioning correctly, debug connection issues, test different request parameters, and understand API behavior without writing code. This saves significant development time and helps ensure your applications interact properly with external services or your own backend systems.
What types of APIs can I test with your tool?
Our API Tester supports all major API types and protocols including REST (Representational State Transfer) APIs, SOAP (Simple Object Access Protocol) web services, GraphQL APIs, JSON and XML RPC services, WebSockets for real-time communication testing, and HTTP/HTTPS endpoints. The tool works with any API that communicates over standard web protocols, making it suitable for testing public APIs, private enterprise services, microservices, and cloud-based systems regardless of the underlying technology stack or implementation language.
What HTTP methods does your API Tester support?
Our API Tester supports all standard HTTP methods used in modern API design. These include GET for retrieving resources or data, POST for creating new resources or submitting data, PUT for updating or replacing existing resources, DELETE for removing resources, PATCH for partially updating resources, HEAD for retrieving headers only without the response body, OPTIONS for determining supported methods or CORS information, TRACE for diagnostic purposes and debugging, and CONNECT for establishing tunneled connections. Each method is easily selectable from the method dropdown menu when configuring your request, allowing you to test the full range of API operations.
Can I save my API tests for future use?
Yes, our API Tester offers comprehensive options for saving and organizing your API tests.
What's the difference between testing REST and SOAP APIs?
Testing REST and SOAP APIs involves different approaches, which our API Tester accommodates. REST API testing uses standard HTTP methods (GET, POST, PUT, DELETE), typically has request bodies in JSON or Form Data formats, is resource-oriented with URLs representing objects, has simpler header requirements mainly focused on Content-Type and Authorization, often includes parameters in the URL path or query string, and generally returns responses in JSON or XML with standard HTTP status codes. In contrast, SOAP API testing primarily uses the POST method regardless of the operation, requires request bodies in XML following the SOAP envelope structure, is operation-oriented with actions defined in the SOAP body, needs specific headers like SOAPAction and Content-Type: application/soap+xml, encodes parameters within the XML structure, and always returns responses in XML with status information in the SOAP envelope. Our API Tester provides specialized support for both paradigms, including SOAP envelope templates, WSDL interpretation assistance, and appropriate defaults for each API type.
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