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Comprehensive API Testing Services

At Binary Studio, we ensure your API meets the highest performance and security standards. Rely on our API testing company to benefit from flawlessly performing APIs, both now and with future updates.

  • microsoft
  • mongoDb
  • aws
  • 100+

    Delivered projects

  • 19+

    Years of business excellence

  • 4.9

    Review rate on Clutch

  • clutch reviews

Why choose our API testing services?


Top-tier talent

Our training program attracts over 15,000 applicants annually, and upon its completion, we hire only the best 0.5% of graduates to join our team.

Microsoft Gold сertified partner

As a Microsoft Gold Certified partner, Binary Studio stands out for its technical proficiency. Our experts are regularly updated with the latest Microsoft technologies and methodologies.

Comprehensive testing approach

Our QA team offers a wide range of testing services, including functional, load, security, and performance testing. This holistic approach ensures that your APIs are robust and secure.

State-of-the-art tools and technologies

Our tech stack includes industry-leading solutions, such as Postman, BrowserStack, and Sauce Labs, to provide efficient API QA services.

Customized testing strategies

We understand that every project is unique. Our team develops tailored testing strategies that align with your specific needs, ensuring optimal results and maximum efficiency.

Proven track record

Our extensive portfolio of successful projects demonstrates our ability to deliver high-quality API testing service. We have helped numerous companies enhance their APIs.

API testing services we offer


Robust API testing

Ensure seamless integration between systems and applications. Our professional QA team provides robust API testing to prevent operation disruptions and ensure flawless performance.

Functional and non-functional validation

We conduct thorough validation of all aspects of API functionality, usability, reliability, and efficiency through both automated and manual testing. We cover all critical integration points.

Simulated production environment

Our API testers use simulated production environments across various software and hardware configurations to validate resilience and reliability under realistic conditions.

Data encryption and integrity testing

We verify that data transmission through your API is encrypted and your data remains integral, therefore, ensuring secure and accurate communication between your systems.

Awards and recognitions

Since 2005, Binary Studio has been providing high-quality services and developing award-winning products for companies across different countries and industries. We have been recognized for excellence in software development with numerous awards, including the Clutch Leader Awards, which emphasize our commitment to quality and innovation.

How we work

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1 Analysis of your requirements We collaborate with you to identify the key areas that need to be tested and develop a thorough strategy. Then, we offer a proposal that defines the end result, timeframe, and price. 1-2 weeks
Team member Team member

Head of PMO

Delivery Manager

2 Onboarding and planning Once the proposal is approved, we start the onboarding process to integrate our QA specialists with your team. We develop a detailed test roadmap tailored to your requirements, outlining the scope, methodology, and tools for testing your APIs. 2-3 weeks
Team member

Testing Team

3 Test execution Once the roadmap is accepted, we perform various tests to identify and fix any issues. Our API testing company carefully monitors the results and logs any bugs or vulnerabilities in your systems during the testing process. project lifetime
Team member

Testing Team

4 Reporting We deliver detailed reports and insights, helping you identify areas for improvement. Our comprehensive reports include test results, identified issues, recommendations on optimization and next steps for API quality assurance. project lifetime
Team member

Testing Team

Ready to Optimize Your API?

Contact us today to learn how our expert API testing services can enhance your app's performance and security. We are ready to assist you with all your testing needs

Case Studies

Industries benefiting from API testing



We can ensure secure and compliant integration for healthcare applications. API testing helps maintain the integrity of patient data, streamline workflows, and meet regulatory standards, which enhances overall healthcare service delivery.


By leveraging robust API testing, financial service companies can maintain security and functionality of their apps. We can help you achieve secure transactions, prevent data breaches, and support the seamless operation of banking, payment, and investment platforms.


Through rigorous testing, we help businesses ensure that their e-commerce platforms can handle high traffic volumes, integrate with various payment systems, and provide a seamless shopping experience for users.


Our testing services guarantee that APIs in the tech industry are reliable, secure, and perform well. This rigorous testing process ensures that all potential vulnerabilities are identified and addressed. As a result, tech companies can stay competitive and innovative.

Ensure API Excellence

Reach out to us for comprehensive testing. We offer flexible cooperation models and can adapt to your specific requirements.

What clients say about us

One thing that continues to impress us is the exceptional quality of engineers that Binary Studio is able to provide us
Mark Volkmann - CEO /
Massage Book
Binary Studio has really been pivotal in FanAngel's success
David Burton - CEO /
Binary Studio is an ideal software development partner and our experience working with them has been fantastic
Pascal Desmarets - Founder & CEO /
Mark Volkmann
Mark Volkmann
CEO / MassageBook
Charleston, SC Charleston, SC
David Burton
David Burton
CEO / FanAngel
San Luis Obispo, CA San Luis Obispo, CA
Pascal Desmarets
Pascal Desmarets
Founder & CEO / Hackolade
Brussels, Belgium Brussels, Belgium

Who we serve



Developing and launching new products may present serious challenges for startups. To ensure the smooth operation and security of their offerings, it is crucial for startups to prioritize API testing. Binary Studio helps new businesses benefit from rapid and reliable APIs by providing comprehensive API testing services.


Maintaining high performance, security, and reliability across multiple systems and large-scale applications is a major issue for large companies. Binary Studio partners with large enterprises to perform comprehensive API quality assurance testing and ensure that their applications operate seamlessly and securely.

SaaS providers

For SaaS providers, delivering seamless integrations, secure data transactions, and consistent user experiences is paramount. API testing is key to ensuring the effectiveness and reliability of SaaS applications. Binary Studio's team can enhance the quality of SaaS offerings through comprehensive API testing.


  • Why is API testing important?

    API testing is crucial for ensuring the integrity and functionality of your software. It helps identify issues early, ensures secure data transactions, and improves the overall quality of the application.

  • What tools are used for API testing?

    We use industry-leading tools such as Postman, Selenium, and JMeter for comprehensive API testing. These tools help automate tests, monitor performance, and ensure reliability.

  • How long does API testing take?

    The duration of API testing varies depending on the project's complexity. Typically, it can range from a few weeks to a couple of months, depending on the scope and requirements.

  • Can API testing be automated?

    Yes, the process can be automated. The automation ensures consistent test coverage, reduces human error, and accelerates the testing process, providing you with quicker feedback.

  • How do you ensure the security of APIs?

    Our security testing services include vulnerability assessments, penetration testing, and compliance checks. We ensure that your APIs are secure against potential threats and data breaches.

  • What types of API testing do you perform?

    We perform various types of API testing, including functional, load, security, performance, and regression testing. This comprehensive approach ensures your API meets all necessary requirements.

  • Do you provide API testing for mobile applications?

    Yes, our API testing services include testing APIs for mobile applications. We ensure that your mobile APIs function seamlessly across different devices and operating systems.

  • What industries benefit from API testing?

    Industries such as healthcare, finance, e-commerce, technology, telecommunications, automotive and more significantly benefit from API testing services. API testing ensures that the APIs powering applications in these sectors function properly, securely and reliably.

Ready to bring your API to excellence?

Contact us today to learn how our expert API testing services can enhance your application's performance and security. During a free 1-hour consultation, we’ll:

  • Discuss your requirements
  • Define timeframe and budget
  • Sign an NDA upon your request.
Edward Robe
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We will get back to you as soon as possible

Ready to bring your API to excellence?