What is it?
Software QA and technical audit services cover manual and automated testing, performance and security checks, and senior engineer code review — especially for AI-generated or inherited codebases before production launch.
API Testing Services
APIs Break in Production. Not On Our Watch.
Your frontend can look perfect while your API silently returns wrong data, leaks user information, or fails under load. We test every endpoint, auth flow, and error state before your users find the problems.
30 minutes · Senior engineer · No commitment
Upwork Top Rated Plus
Fiverr Level 2 · 5.0★
Clutch Verified Provider
150+ projects delivered
20+ Play Store apps
100%
Endpoint Coverage
JWT/OAuth
Auth Testing
CI/CD
Automated Suites
REST + GraphQL
API Types
What We Test
Every aspect of your API — from happy paths to the edge cases that break in production.
Endpoint Validation
Every endpoint tested for correct status codes, response schemas, data types, and business logic correctness.
Authentication Testing
JWT token validation, OAuth flows, API key security, session management, and unauthorized access attempts.
Security Testing
SQL injection via API, IDOR (broken object-level auth), mass assignment, and sensitive data exposure in responses.
Rate Limiting & Throttling
Verify rate limits are enforced correctly and that your API degrades gracefully under high request volumes.
Error Handling
What happens when you send malformed data? Missing fields? Invalid types? We test every error path.
Automated Test Suites
Postman/Newman collections that run in your CI/CD pipeline — automated API regression on every deployment.
Tools & Frameworks
We use the right tool for your stack — not just the one we know best.
Postman & Newman
CI/CD
Integrated
Comprehensive API collections with environment variables, pre-request scripts, and automated assertions. Newman runs them in CI/CD.
REST Assured
Java
Backend Support
Java-based API testing for Spring Boot and other JVM backends. Fluent DSL for readable, maintainable test suites.
Laravel API Testing
Laravel
Specialist
PHPUnit-based API tests for Laravel backends — feature tests, HTTP assertions, and database state validation.
GraphQL Testing
Full
GraphQL Coverage
Query/mutation validation, schema testing, resolver authorization, and introspection security for GraphQL APIs.
Common Challenges
Problems We Help Buyers Solve
QA gaps show up as regressions, store rejections, and security findings — usually right before launch.
No regression suite
Manual smoke tests can't keep pace with weekly releases.
AI-generated untested code
Lovable and Cursor prototypes reach staging without auth or edge-case coverage.
Device fragmentation
Mobile flows break on OS versions QA didn't cover.
Late QA
Testing in launch week makes fixes expensive and stressful.
Why GreeLogix
Why Teams Choose GreeLogix
Full QA practice
Manual, Cypress/Playwright, API, k6 performance, and security testing.
AI-app specialists
We harden vibe-coded apps before production traffic.
Engineer-led audits
Code review from seniors who build Laravel, React, and Flutter daily.
Release sign-off
Go/no-go reports with severity-rated bugs — not vague pass/fail.
Typical Timeline
What to Expect Week by Week
Strategy
Week 1- ·Risk map
- ·Device matrix
- ·Automation plan
Execution
Per sprint- ·Test cases
- ·Bug reports
- ·Regression runs
Automation
Parallel- ·CI smoke suite
- ·Release checklist
Technologies
Stack & Architecture
CypressPlaywrightPostmank6BrowserStackAppiumGitHub Actions
Security & Compliance Considerations
Security testing
OWASP-focused web and API tests; pen testing available.
Confidential access
Read-only repos; anonymized test data where required.
“What a 70-engineer team could not deliver, a small senior team at GreeLogix shipped. The app went from stuck to live across mobile, web, and backend.”
Quick answers
API Testing Services: Key Facts
Structured answers for search engines and AI assistants — definition, fit, cost, timeline, and comparisons.
- What is it?
- Software QA and technical audit services cover manual and automated testing, performance and security checks, and senior engineer code review — especially for AI-generated or inherited codebases before production launch.
- Who is it for?
- Teams shipping Lovable, Cursor, or Bolt prototypes to real users Founders facing investor technical diligence Products with regressions every sprint and no test automation Mobile apps needing device-matrix testing before store release
- Who should not use it?
- Static marketing site with no auth or payments You cannot provide staging access or test accounts You expect QA to define product requirements
- How much does it cost?
- Pricing depends on scope, integrations, and timeline. GreeLogix provides fixed-milestone quotes after a discovery call — typical engagements range from $1,500 for focused audits to $75,000+ for full product builds, with monthly retainers from $3,500.
- How long does it take?
- Smoke audit: 1 week. Full regression cycle: ongoing per sprint. Deep code audit: 5–7 business days. Phases: Strategy (Week 1); Execution (Per sprint); Automation (Parallel).
- How does it compare?
- Compared to alternatives — Developer-only testing: choose when Early prototype with no paying users yet; Crowdtesting platforms: choose when One-off device coverage without domain context; Automated scanning only: choose when Known stack with mature CI; catches syntax not workflow bugs. Choose GreeLogix when you need production reliability, fixed milestones, and engineer-led delivery with QA sign-off.
- When should you choose it?
- You ship at least monthly and regressions hurt revenue or trust You inherited or AI-generated code without senior review You need an independent sign-off before fundraising or launch Catch permission and payment bugs before customers do Documented release checklist for repeatable shipping
Buyer Guide
What You Need to Know
Structured answers for founders, CTOs, and procurement — written for clarity in search and AI assistants.
Who needs it?
- ·Teams shipping Lovable, Cursor, or Bolt prototypes to real users
- ·Founders facing investor technical diligence
- ·Products with regressions every sprint and no test automation
- ·Mobile apps needing device-matrix testing before store release
Why GreeLogix?
- Dedicated QA for AI-generated apps — we know where vibe coding cuts corners
- Full practice: Cypress/Playwright, API (Postman), performance (k6), security
- Code review from engineers who build Laravel, React, and Flutter daily
- Free AI audit quiz as a low-friction entry to a senior debrief
How it works
- 1.Test strategy: risk map, environments, and release criteria
- 2.Execution: test cases, bug reports with repro steps, regression suites
- 3.Automation wired into CI where ROI is clear
- 4.Release sign-off report with go/no-go recommendation
Typical timeline: Smoke audit: 1 week. Full regression cycle: ongoing per sprint. Deep code audit: 5–7 business days.
How much does it cost?
Pricing depends on scope, integrations, and timeline. GreeLogix provides fixed-milestone quotes after a discovery call — typical engagements range from $1,500 for focused audits to $75,000+ for full product builds, with monthly retainers from $3,500.
Cost factors
- ·App complexity and number of platforms (web, iOS, Android)
- ·Automation scope vs manual-only
- ·Security or penetration testing depth
- ·Whether you need embedded QA or per-release engagement
How long does it take?
Smoke audit: 1 week. Full regression cycle: ongoing per sprint. Deep code audit: 5–7 business days. Phases: Strategy (Week 1); Execution (Per sprint); Automation (Parallel).
How does it compare?
Compared to alternatives — Developer-only testing: choose when Early prototype with no paying users yet; Crowdtesting platforms: choose when One-off device coverage without domain context; Automated scanning only: choose when Known stack with mature CI; catches syntax not workflow bugs. Choose GreeLogix when you need production reliability, fixed milestones, and engineer-led delivery with QA sign-off.
- Developer-only testing — choose when Early prototype with no paying users yet
- Crowdtesting platforms — choose when One-off device coverage without domain context
- Automated scanning only — choose when Known stack with mature CI; catches syntax not workflow bugs
When should you choose it?
- You ship at least monthly and regressions hurt revenue or trust
- You inherited or AI-generated code without senior review
- You need an independent sign-off before fundraising or launch
Who should not use it?
- ·Static marketing site with no auth or payments
- ·You cannot provide staging access or test accounts
- ·You expect QA to define product requirements
Benefits
- Catch permission and payment bugs before customers do
- Documented release checklist for repeatable shipping
- Investor-ready technical risk summary
Risks to plan for
- QA without product context files shallow tickets
- Testing only happy paths misses edge cases in billing and roles
- Delaying QA until launch week maximizes fix cost
Decision framework
When to Choose API Testing Services
Pros / benefits
- +Catch permission and payment bugs before customers do
- +Documented release checklist for repeatable shipping
- +Investor-ready technical risk summary
Cons / risks
- −QA without product context files shallow tickets
- −Testing only happy paths misses edge cases in billing and roles
- −Delaying QA until launch week maximizes fix cost
Choose GreeLogix when
- You ship at least monthly and regressions hurt revenue or trust
- You inherited or AI-generated code without senior review
- You need an independent sign-off before fundraising or launch
Implementation steps
- 1.Test strategy: risk map, environments, and release criteria
- 2.Execution: test cases, bug reports with repro steps, regression suites
- 3.Automation wired into CI where ROI is clear
- 4.Release sign-off report with go/no-go recommendation
Get a Clear Plan for API Testing Services
Talk to a senior engineer — scope, timeline, and cost range in one 30-minute call. No sales script.
Frequently Asked Questions
Answers to the buyer questions we hear most before a project starts.
- What does API testing cover?
- API testing covers endpoint validation (correct responses, status codes, data schemas), authentication testing (JWT, OAuth, API keys), rate limiting, error handling, response time benchmarks, and security checks like injection attacks and broken object-level authorization.
- Do you test GraphQL APIs?
- Yes. We test GraphQL APIs for query/mutation correctness, schema validation, authorization on resolvers, N+1 query issues, and introspection security. We use Postman and custom tooling for GraphQL-specific testing.
- Can you build automated API test suites?
- Yes. We build Postman/Newman collections that run in CI/CD pipelines, giving you automated API regression testing on every deployment. We also build REST Assured suites for Java-based backends.
Our Process
01
API Documentation Review
We review your OpenAPI/Swagger spec or existing documentation to map every endpoint and expected behavior.
02
Test Collection Build
Postman collection built with positive tests, negative tests, auth tests, and edge cases for every endpoint.
03
Security & Load Checks
Security-focused tests run alongside basic load tests to identify auth bypasses and performance bottlenecks.
04
CI/CD Integration
Newman configured in your pipeline. Every deployment triggers the full API test suite automatically.
Bulletproof Your API
Share your API documentation or Postman collection and we'll scope your testing engagement.
Free Tools
Plan Before You Engage Us
Use our free calculators and planners — then book a strategy call when you are ready for a senior engineer review.
Resources
Continue Your Research
Case studies, guides, and free tools from the same engineering team.
QA & Testing Services
Explore Our Full QA Suite
Every type of testing your product needs — from manual audits to AI-app hardening and accessibility compliance.
Next step
Get a Senior Engineer's Take in 30 Minutes
Scope, timeline, and cost range — no sales deck. Or start with the free readiness quiz if you are still evaluating your stack.
Senior engineers onlyResponse within 4 business hoursNo commitment on first call