Testsigma Agentic Test Automation Tool

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Design, Validate & Automate API Tests
with AI Agents

Web, Mobile, and API in one platform. Test full user journeys end-to-end.

Import Postman or Swagger in seconds. Convert API docs into automated tests instantly.

Agentic AI builds and maintains API tests. Auto-validates and adapts to API changes.

G2 Cloud
Testsigma - Samsung
Testsigma - Zeiss
Testsigma - DHL
Testsigma - Kfc
Testsigma - Carrier
Amway
Testsigma - Sanofi
Testsigma - Nagra
Testsigma - Space42
Testsigma - Puma
Testsigma - VF Corporation
Arizona
Testsigma - Finance House
Testsigma - Iifl
Testsigma - Cisco
Testsigma - State Form
Testsigma - Kendra Scott
Testsigma - Samsung
Testsigma - Zeiss
Testsigma - DHL
Testsigma - Kfc
Testsigma - Carrier
Amway
Testsigma - Sanofi
Testsigma - Nagra
Testsigma - Space42
Testsigma - Puma
Testsigma - VF Corporation
Arizona
Testsigma - Finance House
Testsigma - Iifl
Testsigma - Cisco
Testsigma - State Form
Testsigma - Kendra Scott

Trusted by high-performing
Quality Engineering teams

10X

Faster Test Development

90%

Lesser Test Maintenance

30%

Shorter Development Cycle

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End-to-End Automation for
AI-driven API Testing

Start testing in minutes, not weeks

Start testing in minutes, not weeks

Import your Postman or Swagger collections instantly. No complex setup, no coding required, just upload and run.

Get Started

AI Agents that adapt to your APIs

AI Agents that adapt to your APIs

When endpoints change, or tests fail, intelligent agents auto-heal broken tests, suggest fixes, and keep your suite running without manual intervention.

Get Started

End-to-end validation in one flow

End-to-end validation in one flow

Chain API tests with UI tests to validate complete user journeys. Test backend responses, then verify how they render on the frontend, all in a single test suite.

Get Started

Automated API Testing: Testsigma vs Alternatives

Tool
Best fit when you choose them
Where they fall short
Postman
Pure API-only testing; developer-led teams; strong API documentation workflows
API-only (not unified UI + mobile); can require coding for complex tests
Katalon Platform
Desktop app testing priority; existing Selenium/Appium stack; budget-conscious teams
Less advanced AI; less cloud-native by design
ReadyAPI (SoapUI Pro)
Heavy SOAP requirements; security testing is critical; strict on-premise needs
More legacy-focused; complex scripting; less modern unified approach
ACCELQ
Enterprise integrations; autonomous testing focus; business process testing
Similar positioning but less user-friendly; can feel heavier to adopt
BrowserStack
Massive real-device coverage (3000+ browsers/devices); real device testing priority; brand trust
Primarily infrastructure-focused (device cloud), not a true unified testing platform
Why choose Testsigma
Unified API + Web + Mobile in one platform; no-code for QA; AI-powered maintenance
Agentic AI features; stronger cloud-native approach; better Postman/Swagger imports
Unified UI + API testing; cloud-native preference; no-code execution for teams
Better UX/interface; stronger community/support; more accessible pricing
True unified API + UI testing; AI generation + maintenance; low-code for non-developers

Testsigma is the only unified platform with Agentic AI that lets you test APIs alongside Web and Mobile without writing code.

Import Postman or Swagger API Tests Ready in Seconds With AI

One-Click Import from Postman & Swagger

One-Click Import from Postman & Swagger

Export Postman collections or Swagger/OpenAPI specs (JSON/ZIP) and upload to Testsigma. Tests are parsed instantly and ready to run, no manual setup.

AI-Powered Test Generation from API Specs

AI-Powered Test Generation from API Specs

Testsigma’s Generator Agent turns imported Postman/Swagger specs into full API test cases, auto-detecting endpoints, creating payloads, and adding assertions with zero code.

Instant API Test Customization & Extension

Instant API Test Customization & Extension

Edit tests using plain-English steps or the visual builder. Add data-driven inputs (CSV/XLS/DB), chain API calls, or connect API + UI flows in the same platform.

Real-Time Response Validation with AI Assertions

Real-Time Response Validation with AI Assertions

Smart assertions are auto-created for status codes, headers, schema, and response body. AI also suggests expected outcomes from your API spec, reducing manual validation work.

Self-Healing API Tests with Healer Agent

Self-Healing API Tests with Healer Agent

When endpoints or schemas change (URLs, params, structures), the Healer Agent detects updates and adapts tests automatically, cutting maintenance up to 90% and keeping imports stable.

What is Automated API Testing?

Automated API testing is the practice of using tools/scripts to automatically send requests to an API and verify the responses (status codes, headers, data, and performance) so you can quickly catch issues without manually testing endpoints.

Features of API Test Automation

Benefits of Automated API Testing

Speed and Efficiency

Speed and Efficiency

Automated API testing cuts regression cycles from days to hours. It also automates repetitive checks so QA can focus on exploratory testing and support weekly releases without delays.

AI-Powered Intelligence

AI-Powered Intelligence

AI reduces the effort needed to create and maintain API tests. It can generate tests from specs and requirements and reduce maintenance through auto-healing behavior.

Low-Code and No-Code Accessibility

Low-Code and No-Code Accessibility

Automated API testing becomes usable for non-developers through low-code/no-code workflows. This lets manual testers contribute and reduces reliance on specialist automation engineers.

Unified Testing in One Platform

Unified Testing in One Platform

Automated API testing works best when it runs alongside web and mobile tests in one place. This reduces tool sprawl and helps teams manage execution, reporting, and environments together.

Resource Optimization

Resource Optimization

Automated API testing helps teams scale coverage without scaling headcount. It increases throughput dramatically compared to manual execution and makes large test suites realistic to maintain.

How to Automate API Testing with Testsigma

Create a test case for each planned check. In Testsigma, you can do this without code by using the Generator Agent or recording steps, then add assertions to validate request values, response fields, and the response schema.

Test Case

Frequently Asked Questions

API test automation involves the creation of automated test scripts that simulate different types of API requests and responses to validate their functionality, reliability, and performance. This helps to ensure that APIs are working as expected and meet the requirements of the software application being developed, while also reducing the risk of human error and increasing testing efficiency.
API testing is often a challenging and time-consuming task, particularly for testers with little or no coding experience. To familiarize yourself with API testing, learn how to send requests and analyze responses. Additionally, using an easy-to-use, No-Code API testing tool like Testsigma with built-in test automation capabilities can also make the process easier and more efficient.
Automating API tests in Testsigma is a breeze - just create a new test case, choose 'API test,' and add your API endpoint. From there, add more details such as header content, status code, or parameters, and send the request. See the response and validate it automatically by adding codeless assertions. Create reusable components and automate even the most complex API workflows.
Yes, you can easily import a Postman collection into Testsigma. To do so, simply export your Postman collections and Environments as a JSON or ZIP file and upload it into Testsigma. Once your collection is imported, you can use it to create new API test cases or incorporate it into existing ones. Testsigma also allows you to customize your imported Postman collections and add additional test steps as needed.