API testing is critically important for software quality, and software testers need to prove their knowledge of API testing to move their career forward. There is no ISTQB API Testing certification, but AT*SQA offers an API Testing certification. There are ISTQB certifications that cover API testing to some degree, as you’ll learn below. Our official exam provider AT*SQA offers an API Testing certification that is awarded when you earn all three of their API testing micro-credentials: API Testing: Introduction and Testing Planning and Design API Testing: REST API, gRPC, and graphQL API Testing: Environments, Tools, and Future Proofing Below is additional information that will help you learn and prove your API testing knowledge with the help of ASTQB and AT*SQA. While ISTQB Foundation Level certification does briefly mention API testing, it doesn’t go into much detail. The ISTQB certifications that cover API testing the most are ISTQB Technical Test Analyst with nearly 30 mentions and a subsection on API testing, and ISTQB Test Automation Engineering. Note that ISTQB Foundation Level certification is a prerequisite for the other two certifications. In addition to these options, AT*SQA offers an API Testing certification, as noted above. 100% of the AT*SQA API Testing syllabi (bodies of knowledge) are dedicated to API testing. You earn the API Testing certification by passing all three of the API Testing micro-credentials. There is no prerequisite for AT*SQA’s API Testing certification or the API Testing micro-credentials, so it would be an excellent start or addition to the ISTQB certifications mentioned above. AT*SQA also offers an online software testing training course that will help you prepare for their API Testing certification and micro-credentials. All of the ISTQB and AT*SQA certifications and micro-credentials you earn through AT*SQA add to your Testing Tiers® ranking, and increase your level in the Official U.S. List of Certified and Credentialed Software Testers™ as well as the AT*Work™ list of testers for hire. Start building your API Testing knowledge and credentials today.