Functional API Testing Services Company in USA

Why
Vervali?

Why Vervali?

Data Security

Protecting digital information from unauthorized access, theft, or corruption.

Targeted Testing

Identifying specific areas of the website or application that are most critical or vulnerable to errors, and focusing testing efforts on those areas.

-30% Reduce Bug Cost

Through effective quality assurance practices, such as implementing automated testing, conducting regular code reviews etc.

Focused on Business goals

Aim to maximizing the website's potential to drive growth, increase revenue, and achieve other key performance indicators (KPIs).

-20% Testing Time

Through prioritizing testing efforts based on risk analysis and streamlining the testing process.

Risk Based testing

Involves identifying and prioritizing potential risks associated with a software application or system, and using this information to guide testing efforts.

Challenges into Triumphs

Turning problems into opportunities for growth and innovation

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Silent API failures not caught in regression

Detected with automated end-to-end regression suites and real-time API monitoring.

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Poor schema versioning or contract violations

Controlled with strict contract testing, schema validation, and backward compatibility checks.

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Multi-service auth + token test failures

Resolved through secure token management, role-based test scenarios, and auth flow validation.

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Inconsistent API behavior in staging vs production

Identified with environment parity checks, configuration audits, and shadow testing.

Frequently Asked Questions (FAQs)

It involves validating your API endpoints for correctness, stability, and adherence to business logic — including response data, schema, error codes, and workflows.

Each microservice communicates via APIs. Functional API testing ensures these communications don’t break or misinterpret data across distributed services.

Yes, we test both internal and external APIs to ensure integrations are reliable and compliant with SLA contracts.

Yes — we create automated suites using tools like REST Assured, Postman/Newman, and integrate with Jenkins/GitHub.

They should run with every build as part of CI/CD — especially when APIs are reused across features and clients.

Yes, we build realistic and secure test data sets to validate edge scenarios and negative paths.

Functional testing checks logic and behavior, while performance tests stress-load response times, and security tests check for vulnerabilities like injection, spoofing, etc.

Featured Insights

Embracing Accessibility

Vervali was commissioned to audit, identify and remedy over 2,000 URLs across all client platforms and solutions in accordance to the WCAG 2.0 guidelines with the objective to achieve AA Level of the 508 certifications.

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Automate Optimize and Drive Profitability

The offer loading and IP whitelisting was a process that was managed internally by our client. When they struggled to manage the increased volume, they reached out to us for help with manual data entry. Vervali analyzed the entire manual process and produced an automation plan and framework.

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A Bug Free Reward Program

To sustain an intensely competitive landscape of frequent flyers and loyalty programs our client was making every effort to engage & retain its customers by introducing increased benefits and new products. However, the introduction of these new changes without proper testing made their website more vulnerable and multiple defects.

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Digital Onboarding, Separation and Asset Management

With the increasing customer base, our client was enjoying great traffic and demand for their software. However, to sustain this increased growth, our client knew that they had to constantly upgrade their product. While they had introduced software to digitize the employee onboarding process. However, there were still many manual processes still in play. Our client needed a strategic partner, who can act as an extension of their team and help them digitize the manual processes.

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