HOME / SERVICES / API Testing Company

API Testing
Services & Automation
Company

Codebit Solutions is a trusted API Testing & QA Automation Company helping startups, SMEs, and enterprises across India, USA, UK, Canada, and Australia validate REST, SOAP, GraphQL, gRPC, and Microservice endpoints with automated assertion suites, performance load tests, security audits, and continuous CI/CD integration.

REST & GraphQL QA Postman & Newman REST Assured & PyTest JMeter & k6 Load Test OWASP API Security

// Postman API Assertion Suite

pm.test("Status 200 OK", function () {

pm.response.to.have.status(200);

});

pm.test("Response < 150ms", function () {

pm.expect(res.responseTime).below(150);

});

BUSINESS NEED

Why Businesses Need Professional API Testing & QA Automation

Broken backend endpoint contracts, un-validated API payload schemas, slow response latencies, security vulnerability exploits (OWASP Top 10 API), and regressions during CI/CD builds disrupt customer experiences. Automated API testing ensures rock-solid backend reliability.

01

Early Shift-Left Bug Detection

Catch business logic bugs, status code errors, and data validation flaws early in development before UI integration.

Shift-Left QA
02

End-to-End Test Automation

Build robust automated assertion scripts in Postman, REST Assured, and PyTest running automatically on pull requests.

Automation Suites
03

API Performance & Load Resilience

Simulate thousands of concurrent user requests using JMeter and k6 to verify API throughput and response SLA limits.

Load Resilience

Why Choose API Testing ?

Why Choose Automated API Testing for Modern Architectures

APIs form the digital backbone connecting mobile apps, web frontends, microservices, and third-party integrations. Rigorous API testing guarantees seamless data exchange and security compliance.

From RESTful endpoints to complex GraphQL mutations and gRPC streams, automated testing protects backend business logic.

Fast Execution & High ROI

API test suites run up to 10x faster than UI tests, providing rapid feedback to developers during build execution.

10x Speed

Multi-Protocol Coverage

Comprehensive validation for REST, SOAP, GraphQL, gRPC, WebSockets, and asynchronous Kafka messaging.

Multi-Protocol

Schema & Contract Validation

Verify OpenAPI / Swagger schemas, JSON/XML payload structures, and strict request/response data types.

OpenAPI Schema

OWASP API Security Audit

Audit authentication tokens, rate limiting, SQL injection, CORS, broken object authorization (BOLA), and SSL.

OWASP Security

Continuous CI/CD Integration

Integrate Newman, PyTest, and Maven test runners directly into GitHub Actions, GitLab CI, and Jenkins.

CI/CD Pipeline

Data-Driven Mocking & Stubs

Mock third-party API dependencies using WireMock or Postman mocks to run isolated, predictable assertion tests.

WireMock & Mocks

Our Services

Our Comprehensive API Testing Services

As a specialized API Testing & QA Automation Company, Codebit Solutions provides end-to-end API functional testing, automation framework setup, load testing, OWASP security audits, and continuous CI/CD integration.

Functional & Contract API Testing

Validate HTTP status codes, response headers, JSON/XML body assertions, and OpenAPI contracts.

API QA Automation Frameworks

Build scalable automation frameworks using Postman/Newman, REST Assured (Java), PyTest (Python), or Playwright.

API Load & Performance Testing

Simulate peak concurrency, stress limits, and latency SLAs using Apache JMeter, k6, and Gatling.

OWASP API Security Audit

Identify vulnerability risks including BOLA, broken authentication, rate limit bypasses, and data leaks.

GraphQL & gRPC Endpoint QA

Test GraphQL queries, mutations, subscriptions, and gRPC Protobuf binary streams with high precision.

Microservice & Integration QA

Verify multi-service workflows, event-driven messaging, database state changes, and webhook callbacks.

Third-Party API Integration QA

Validate external payment gateways, CRM APIs, OAuth providers, and cloud webhooks under real-world conditions.

CI/CD Regression Pipeline Sync

Configure headless test execution on Git commits with automated HTML report generation and Slack alerts.

Documentation & Mock Servers

Create interactive OpenAPI / Postman documentation and mock servers for parallel frontend-backend dev.

Solutions

Solutions We Build Using API Testing

Our API QA solutions guarantee backend compliance, zero regression, and peak response performance.

API testing is essential for FinTech payment gateways, healthcare FHIR APIs, multi-tenant SaaS products, and e-commerce platforms.

FinTech & Payment Gateway Validation

Validate PCI-DSS compliant payment APIs, OAuth2 tokens, webhooks, and ledger transaction accuracy.

Healthcare HIPAA API Compliance

Test FHIR/HL7 healthcare APIs for data encryption, patient privacy authorization, and audit logging.

Ecommerce Multi-Vendor API Testing

Automate inventory, cart checkout, shipping calculator, and order management API workflows.

SaaS Multi-Tenant API Suite

Verify tenant isolation, rate limiting, role-based authorization, and subscription billing endpoints.

Mobile Backend API Regression

Ensure backward compatibility for legacy mobile app versions interacting with updated backend APIs.

IoT Telemetry & MQTT Endpoint QA

Test high-frequency IoT data ingestion, MQTT brokers, and real-time streaming endpoint stability.

Serverless & Cloud Lambda API QA

Validate AWS API Gateway, Lambda functions, Azure Functions, and Google Cloud Run endpoints.

Legacy API Migration QA

Verify parity and zero regression when migrating monolithic APIs to microservices or modern frameworks.

Continuous Synthetic API Monitoring

Deploy automated health check monitors pinging production APIs 24/7 with instant incident alerts.

INDUSTRIES WE SERVE

API Testing Solutions For Every Industry

Every industry relies on seamless API connectivity. Our QA automation services deliver high-throughput, secure API validation across all domain sectors.

Agriculture

Agriculture

API assertion testing for Agritech telemetry gateways and field sensor REST services.

Travel

Travel & Hospitality

Automated API load testing for flight reservation engines and hotel booking APIs.

Manufacturing

Manufacturing

gRPC and MQTT endpoint testing for Industry 4.0 IoT equipment and ERP interfaces.

Logistics

Logistics

API contract testing for real-time dispatch tracking, GPS telemetry, and fleet APIs.

Healthcare

Healthcare

HIPAA-compliant FHIR/HL7 API security auditing, payload validation, and privacy checks.

Education

Education

API performance testing for EdTech video streaming endpoints and online quiz services.

Real Estate

Real Estate

REST API validation for property search filters, agent CRM webhooks, and map APIs.

Ecommerce

Ecommerce

Automated API stress testing for flash sale checkouts, inventory sync, and payment gateways.

FinTech & SaaS

FinTech & SaaS

PCI-DSS compliant API testing, OAuth2 token security, rate limiting, and BOLA audits.

Process

API Testing & QA Automation Process

We follow a structured 6-step QA engineering process to analyze schemas, build test suites, execute performance load tests, audit security, and integrate CI/CD automation.

01
API Blueprint & Schema Analysis
We review your OpenAPI/Swagger specs, HTTP endpoints, payload data models, and authentication workflows.
02
Test Strategy & Tool Selection
We define the QA roadmap, selecting Postman/Newman, REST Assured, PyTest, JMeter, or k6 based on technical stack.
03
Test Case Authoring & Assertions
Our QA engineers write positive, negative, boundary, schema, status code, and header assertion test scripts.
04
Automation Framework & Mock Setup
We build modular automation frameworks with environment variables, dynamic test data sets, and WireMock stubs.
05
Performance & Security Execution
We execute concurrent load tests using k6/JMeter and run OWASP API security scans to audit vulnerability vectors.
06
CI/CD Integration & Ongoing SLA Support
We integrate headless regression execution into GitHub Actions/GitLab CI pipelines with Slack reporting and 24/7 SLA support.

Why Codebit ?

Why Businesses Choose Codebit Solutions for API Testing

Businesses choose Codebit Solutions because we combine ISTQB certified QA expertise, Postman & REST Assured automation mastery, JMeter performance engineering, and OWASP API security auditing.

01

ISTQB Certified QA Engineers

Certified QA testing specialists with extensive experience validating microservices, REST, and GraphQL APIs.

02

Postman & REST Assured Masters

Expertise building data-driven, maintainable assertion frameworks with Newman, PyTest, and REST Assured.

03

JMeter & k6 Load Testing Pros

Simulating high-concurrency traffic spikes to benchmark API latency SLAs and server throughput limits.

04

OWASP API Security Audits

Auditing authentication, BOLA, rate limiting, and data encryption to prevent vulnerability exploits.

05

Seamless CI/CD Integration

Automating headless test suite execution on pull requests with instant HTML reporting and Slack notifications.

06

Dedicated 24/7 SLA Support

Continuous synthetic API monitoring, test script maintenance, version regression checks, and SLA support.

Ensure Reliability with
API Testing & Automation

with Expert QA Engineering

Codebit Solutions helps startups, SMEs, and enterprises build high-concurrency, zero-bug API automation suites tailored to modern microservice scale.

Response Time 24 Hours Guaranteed

FAQs

Frequently Asked Questions

Find answers to common questions about our API Testing Services, Postman automation, REST Assured frameworks, OWASP security audits, and load testing.