Top Codeless API Testing Tools
Last Updated : 21 Feb, 2025
API testing has become a critical part of modern-day software development as it guarantees seamless communication among different applications and services. Traditional API testing methods, however, generally require a certain level of programming knowledge and thus pose challenges to non-technical testers. A codeless API testing solution eliminates the coding burden and provides intuitive user interfaces to allow users to create and set up API tests themselves without writing code. This is particularly useful for QA testers, business analysts, and organizations that aspire to quicken their testing pace.
In this article, we will learn about the top 10 codeless API testing tools, their key features, and how they are different from other testing tools to assist you in making the right choice.
What are Codeless API Testing Tools?
Codeless API testing tools empowers test engineers to work on validation of API functionality, performance, and security without writing code. Generally, these tools are easy to use, offering drag-and-drop-style interfaces, pre-defined test steps, and automated assertions for greater usability. This way, the test can be created faster, more collaboration can go on, and maintenance becomes easier, making API testing accessible to manual testers, business analysts, and developers alike.
Key Benefits of Codeless API Testing Tools:
- Faster Test Creation – No need to write test scripts manually.
- Improved Collaboration – Business teams and testers can contribute without coding skills.
- Automated Assertions – Validate API responses effortlessly.
- Better Maintenance – Visual test flows make it easier to update test cases.
- Integration with CI/CD – Many tools support DevOps pipelines for continuous testing.
Top 10 Codeless API Testing Tools
1. Test Studio
Test Studio by Progress Telerik is a powerful codeless API testing tool designed for functional UI testing. It enables us to build effective API tests easily with its user-friendly interface. Even a less experienced QA can create API tests, using drag-and-drop feature without writing a single line of code.
Key Features:
- Easy drag-and-drop test creation.
- Built-in debugging tool.
- Integration with different tools (Jenkins, Azure).
- Ability to create smart tests.
- Advanced reporting and analytics.
2. Postman
With over 20 million users, Postman is one of the top codeless API testing tool. It offers both codeless and script-based automation. It provides an intuitive interface to create API requests, validate responses, and automate tests using pre-built tests. Postman also enables collaboration by allowing teams to share test collections easily.
Key Features:
- User-friendly interface allowing faster learning.
- Pre-built testcases for codeless testing.
- Supports REST, SOAP, and GraphQL APIs.
- Supports data-driven testing.
- Built-in API documentation and monitoring.
- Seamless integration with CI/CD tools.
- Report generation in HTML and JUnit format for better results.
To know more about Postman, refer to this article: Postman
3. TestGrid
TestGrid is a cloud-based API testing platform offering no-code and low-code solutions for API automation. It allows testers to record API calls and execute tests without scripting, making it an ideal choice for manual testers.
Key Features:
- Codeless API test automation.
- Reduced testing costs.
- Built-in test management and execution.
- Performance and security testing support.
- Integration with CI/CD tools.
4. Katalon Studio
Katalon Studio is an all-in-one testing platform that supports web, mobile, and API testing with a user-friendly interface. It supports no-code, low-code and full-code testing environment. It provides pre-built templates, a keyword-driven framework, and AI-powered maintenance.
Key Features:
- User-friendly interface for users with different levels of knowledge.
- Supports Behaviour-Driven Development syntax for better results.
- Supports cross-browser testing.
- Requires minimal maintenance.
- Supports all types of REST and SOAP requests.
- Allows integration with CI/CD tools like Jenkins, Git, and Jira.
To know more about Katalon Studio, refer to this article: Katalon Studio
5. Ghost Inspector
Ghost Inspector is a browser-based tool primarily designed for web and API automation. It allows users to generate automated tests without writing a single line of code. It allows users to create codeless tests using record-and-playback functionality, making it ideal for non-technical users.
Key Features:
- No code UI and API testing.
- It is browser-based tool means testers can run tests from anywhere, anytime.
- Supports test scheduling and monitoring.
- Visual regression testing.
- Allows integration with various other tools like Slack, JIRA for easy sharing.
6. SoapUI
SoapUI is one of the top 10 codeless API testing tools. It is used to execute end-to-end tests on REST, SOAP, and GraphQL APIs, JMS, JDBC, and other web services that allows users to design and execute tests without advance programming skills.
Key Features:
- User-friendly drag-and-drop interface.
- Supports TEST, SOAP, and GraphQL APIs.
- Provides detailed reports of test resukts which helps in fixing issues quickly.
- Allows scripting for testing advanced functionalities.
- Supports security and performance testing.
To know more about SoapUI, refer to this article: SoapUI
7. Testsigma
Testsigma is a cloud-based AI test automation tool that allows users to write test cases in plain and simple language using natural language processing (NLP). It enables codeless automation while ensuring seamless execution across different platforms. It helps in complex test scenarios with data-driven inputs for detailed test coverage.
Key Features:
- NLP based test execution.
- Allows CI/CD integration for devops.
- Real-time execution and debugging.
- Test different REST API methods like GET, POST, PUT, DELETE, and HEAD.
8. BrowserStack
BrowserStack is primarily a cross-browser testing tool that also offers codeless API testing. It allows testers to validate API responses without writing scripts, ensuring quick automation for API workflows.
Key Features:
- Codeless API validation.
- Supports multiple API types.
- Parallel API test execution.
- Cloud-based test automation.
- Real device testing integration.
9. AccelQ
AccelQ is a AI-powered codeless automation platform for web, mobile, and API testing. It provides a model-based test design approach that enables testers to automate complex workflows without scripting. It supports open source alignment, natural language processing, automated test generation, and intelligent element explorer making it in top 10 codeless API testing tools.
Key Features:
- Model-based automation for APIs.
- User-friendly drag-and-drop interface.
- Continuous testing with CI/CD integration.
- AI-driven test optimization.
- Supports REST, SOAP, and GraphQL APIs.
10. LoadUI Pro
LoadUI Pro, part of the ReadyAPI suite, is an advanced codeless API performance testing tool. It helps teams test API load, scalability, and reliability without scripting. It enables testers to simulate real-world traffic patterns before sending any app to market.
Key Features:
- Codeless API load testing.
- Simulates real-world traffic loads.
- Supports REST, SOAP, and GraphQL APIs.
- Customizable test scenarios.
- Integration with Jira, Jenkins, and CI/CD tools.
Comparison Table - Top Codeless API Testing Tools
Here is the comparison table for the top codeless API testing tools:
| Tool Name | Supports | Key Features |
|---|
| Test Studio | REST, SOAP | Drag-and-drop test creation, Built-in debugging, CI/CD integration |
| Postman | REST, SOAP, GraphQL | Pre-built assertions, API documentation, Automated request chaining |
| TestGrid | REST, SOAP | Codeless API test automation, Performance testing, Cloud-based execution |
| Katalon Studio | REST, SOAP | AI-powered test maintenance, Keyword-driven framework, Built-in reporting |
| Ghost Inspector | REST | Record-and-playback testing, Test scheduling, Visual regression testing |
| SoapUI | REST, SOAP, GraphQL | Security and load testing, Drag-and-drop case creation, CI/CD integration |
| Testsigma | REST, SOAP | NLP-based test creation, Cross-device testing, Real-time execution |
| BrowserStack | REST, SOAP | Codeless API validation, Parallel test execution, Real device testing |
| AccelQ | REST, SOAP, GraphQL | Model-based automation, AI-driven test optimization, CI/CD support |
| LoadUI Pro | REST, SOAP, GraphQL | Load testing simulation, Customizable test scenarios, CI/CD support |
Conclusion
Codeless API testing tools have changed the scenario by making API testing much faster, easier, and accessible for everyone, even non-coders. Functional, load, and security testing—whatever the type of test you require, these tools offer powerful automation with a user-friendly approach. For versatile and really popular tools, you can go for Postman. For those needing AI automation, AccelQ and Testsigma are awesome. If you are looking for performance testing, LoadUI Pro is a good option.
Choosing the right tool depends on your specific needs—but no matter which one you pick, codeless testing will help you speed up testing, reduce errors, and improve software quality effortlessly.
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