API Testing Library
Everything TestGuild has published on API and contract testing, from tooling to strategy, across articles, webinars, podcasts, courses, and talks.
New to API Testing? Start with our guide →Articles (33)
article
Best API Testing Tools in 2026: A Practitioner’s Guide
May 31, 2026 article
The Best Open Source API Testing Tools for 2024
May 1, 2024 article
Is Selenium API Testing Possible?
Jan 17, 2024 article
AI Powered API Testing (Meet Loadmill)
Sep 21, 2022 article
How to Perform API Web Services Testing (Definitive Guide)
Aug 17, 2022 article
soapUI How to Post JSON to a REST Service
Aug 17, 2022Show all 33 articles
- Citrus API Automation Testing Framework
- How to Use REST APIs and Selenium WebDriver Together
- How to Choose an API Testing Tool
- Getting More From Your Functional API Tests
- Karate a Rest Test Tool – Basic API Testing
- API Testing with Postman Chrome (must have extension)
- 3 FREE API Security Test Tools
- REST-assured How to Check Response Times
- TESTING AND MONITORING APIs [PODCAST]
- Shift-Right: How to Test Microservices
- ReadyApi: How to create a Virtual Service to test your APIs using ServiceV
- Fiddler Debugging Getting Started
- HP UFT API – FREE TRAINING VIDEOS
- Why API Testing is Important (GUI is No Longer King)
- REST-ASSURED – HOW TO POST A JSON REQUEST
- REST Testing with Java Part Two: Getting Started with Rest-Assured
- REST Testing with Java – Rest-Assured Quick Start
- UFT API How to Dynamically Get and Set a WebService EndPoint
- UFT API TEST RETURNS HTTP 401 ERROR
- UFT – What is an API test type?
- soapUI – How to Test a REST Service
- UFT API Negative Testing HTTP 500 Errors
- How to test a RESTful web service using HP’s LoadRunner
- UFT API How to Write Web Service Response to Excel
- soapUI Pro – How to test a web service
- QuickTest Pro How to Test a REST Service
- LoadRunner Web Service Tutorial: Learning the Basics
Webinars (5)
webinar
Why Service Virtualization is Critical to Testing
Apr 25, 2024 webinar
Navigating the Brave New World of API Testing with Karate
Nov 11, 2023 webinar
Deviceless Mobile Testing Using AI
Apr 6, 2023 webinar
API Testing for Kubernetes: Transparent Remoting Using HCL OneTest
Apr 4, 2023 webinar
Should You Be Doing More API Testing?
Mar 23, 2023Podcasts (73)
podcast
How to Test Any API Without Documentation with Liudas Jankauskas
Jun 30, 2026 podcast
From Vibe Slop to AgentOps, Postman AI, Bug Report to Release Sign Off and More! TGNS187
Jun 8, 2026 podcast
Automation Guild Kickoff, AWS Nova, Karate v2, and AI Testing Reality and more TGNS177
Dec 8, 2025 podcast
Playwright Testing: How to Make UI and API Tests 10x Faster with Naeem Malik
Oct 5, 2025 podcast
API Coverage, AI GitHub Reviewer,Automation Maturity Pyramid and More TGNS169
Sep 22, 2025 podcast
GraphQL in the Age of AI Agents – Insights from Apollo’s CEO Matt DeBergalis
Aug 20, 2025Show all 73 podcasts
- Are AI Agents Replacing Contract Testing? DevOps Insights from Matt Fellows
- When the Cloud Isn’t an Option: Securing Your API Testing Strategy with Thomas Hurley
- WireMock with Tom Akehurst
- Aligning DevOps Teams for API Quality with Temil Sanchez
- AI Contract Testing, ReportPortal Playwright, Test Data and More TGNS159
- The API Vector with Jeremy Snyder
- Visual and API Testing with Playwright, JMeter Book and more TGNS149
- Open Source AI for Testing, Playwright API Mocking, Top Testing Events and more! TGNS146
- Playwright Postman API Convertor, TestZeus, AutomationGuild 25 TGNS143
- Digitial Testing Equals Testing of Digitalized Processes with Tobias Müller
- From Chaos to Clarity: Improving Software Testing Practices with Prathyusha Nama
- Why Security Testing is an important skill for a QEs with Boris Arapovic
- API Testing 3 ways: Postman, Playwright, and Jest Compared with Stephen Kilbourn
- Testing Banking Apps, WebDriverIo, E2E Playwright TGNS133
- GenAI Learning Journey, Contract Testing, AI Safety Testing and more TGNS131
- Quality Assurance Myths, Code-less Performance, Karate and More TGNS128
- Contract Testing in Action (Book Review) with Marie Cruz and Lewis Prescott
- Getting the Most Out of Open Source with Yousaf Nabi
- Expert Take on Playwright, and API Testing with Bas Dijkstra
- How to Create Testing Magic with Zero-code with Shubham Jain
- Appium Interceptor ,Automation Trends, Playwright and More TGNS107
- AutomationGuild 2024, Swagger API Security and Gemini AI TGNS105
- Toad Testing, Karate Course for Newbie, Mock APIs and More TGNS104
- Unifying Manual and Automated Testing Efforts with Javier Re
- AI Test Army, Call for Speakers and More TGNS95
- BDD in Action, Performance Golden Rule and More! TGNS79
- How to Create Automation Magic with Benjamin Bischoff
- 100 Billion Dollar Bug, Postman Collections and More! TGNS73
- API Testing Kubernetes (Transparent Remoting Using OneTest) with Chris Haggan and Martin Lescuyer
- What Most People Get Wrong About Simulation with Chris Colosimo
- Automation Voting, C# API Testing, and More! TGNS62
- Future of QA Chat with Industry Experts! with Joe Colantonio
- Playwright Cypress Fight, Microservices, Observability and More! TGNS57
- Behavior Driven API Testing with Ido Cohen
- Api Testing and Mock Servers with Pricilla Bilavendran
- Contract Testing with Lewis Prescott
- Selenium 4 Facebook & Twitch Hack TGNS17
- API Pen Testing with Mateusz Olejarka
- Karate DSL: Performance from Zero to Hero with Artem Bondar
- Testing Web APIs with Mark Winteringham
- API Testing using Postman with Kristin Jackvony
- API Load Testing Strategies with Harsh Upreti
- The Benefits of Automating Your API Security Testing with Oliver Moradov
- Why You Need to do API Performance Testing with Patrick Poulin
- API Security Testing In DevOps with Oli Moradov
- Performance Testing of gRPC services with Vikas Kumar
- API Performance Testing Trends with Phil Voulgaris & Keshav Vasudevan
- ScalaTest for API Testing of MicroServices with Zubair Haque
- ScalaTest Performance Testing Microservices with Zubair Haque
- Testing SAP APIs: Strategy and Execution with Michal Krawczyk
- Service Virtualization Microservices Testing with Brandon Byars
- How to Security Test Your APIs with Troy Hunt
- Performance Testing APIs with Patrick Poulin
- Karate for UI Automation with Peter Thomas
- 238: Karate API Testing with Peter Thomas
- 214: API Fortress Testing and Monitoring with Patrick Poulin
- 209: API Functional Testing with Klaus Neuhold & Dave Karow
- 190: Integration Automation Using Citrus Testing Framework with Christoph Deppisch
- 137: APIs and Automated Testing with Bas Dijkstra
- 121: Testing Video Games Using API Automation with Amber Race
- 72: Neil Mansilla: Runscope – Monitoring APIs from the Shower
- 52: Paul Bruce: Service Virtualization for the IoT API Era
- 45: Johan Haleby: Getting Started Testing with Rest-Assured
- 37: Michael Giller: API Testing with the Ready! API Platform
- 23: Joe Colantonio : Why API Testing is so Important
- 21: Troy Hunt: Hack Your API-Security Testing
- 12: Mike Giller: SoapUI and API Testing
Courses (3)
Talks (14)
talk
Maria Shalnova-Weinzierl: The interface! Testing APIs correctly between unit and UI tests
talk
The interface! Testing APIs correctly between unit and UI tests (Maria Shalnova-Weinzierl)
talk
Vernon Raineil Cenzon: Multi-Agent API Testing with MCP (MAY)
talk
Artem Bondar: API Testing with Playwright: All-In-One, Fast and Easy
talk
Marie Cruz: Breaking Silos: Contract Testing for Today’s API-Driven World
talk
Accelerating API Testing: A Practical Guide to Automation with Cypress (Anna Patterson)
Show all 14 talks
- API Automation Mastery: From Novice To Ninja (Sachin Gaikwad)
- Cracking The Code On API Security: Insights On OWASP API Top 10 (Arthur Hicken)
- Mocking The Unmockable: Elevating Test Automation Stability Through Advanced API Simulation (Amit Rawat)
- Safeguarding Digital Assets: Uncovering Security Risks In APIs (Pricilla Bilavendran)
- Shift Left Performance Testing (Dave Sorenson)
- Gaurav Singh: Contract Testing: Beyond Functional API Tests
- Peter Thomas: Karate MicroServices Test Automation Made Simple
- Day 5: Mobile, API & Unit Testing