🔗 Software Testing

APIs & Microservices Testing Services

Most QA teams focus on what users see and click. But your real business logic, data processing, and system integrations happen at the API layer. and those bugs don't show up in UI tests. An untested API can corrupt data, silently expose user information, or fail in ways that are only discovered in production.

01All endpoints. all HTTP methods
02Auth flows, tokens, rate limits
03Contract testing between services
04Error handling and edge cases
05Schema validation and drift

Get a Free Consultancy →← All Platforms

100%

Endpoint Coverage

Protocols

<200ms

P95 Target

Your UI looks fine. your API is where the real bugs live

We test every endpoint, every auth flow, every contract between services. REST, GraphQL, gRPC, event-driven architectures, and the third-party integrations your systems depend on. Nothing gets through untested.

The whole thing gets automated and wired into your CI/CD. Every PR, every deployment. your API contracts are validated before code reaches production. No surprises.

What We Test

What We Test on APIs & Microservices

A comprehensive breakdown of every testing area we cover for this platform.

REST APIs

✓All HTTP methods. GET, POST, PUT, PATCH, DELETE
✓Request and response schema validation
✓Status codes and error message accuracy
✓Pagination, filtering, and sorting behaviour

GraphQL APIs

✓Query and mutation correctness
✓Subscription testing
✓Schema introspection and breaking change checks
✓N+1 query problem detection

gRPC Services

✓Protocol buffer schema validation
✓Unary and streaming RPC testing
✓Service discovery and load balancing
✓Deadline and timeout handling

Auth & Security

✓OAuth2, JWT, and API key validation
✓Token expiry and refresh flow testing
✓Rate limiting and throttling enforcement
✓SQL injection via API payloads

Contract Testing

✓Consumer-driven contracts with Pact
✓Breaking change detection before deployment
✓Schema versioning and backward compatibility
✓Service-to-service contract validation

Integration Testing

✓Third-party API mock and dependency testing
✓Webhook delivery, retry, and failure handling
✓Event-driven system testing. Kafka, SNS/SQS
✓Database state assertions post API call

Our Approach

How We Test This Platform

A structured process with clear deliverables at every stage.

We map every endpoint first

We catalogue all your endpoints, auth mechanisms, and integration points. If you have OpenAPI or Swagger specs, those become our contract baseline from day one.

We design tests for every scenario

Happy paths, error scenarios, boundary conditions, security edge cases. every endpoint gets the full treatment, not just the sunny-day flow.

We mock your dependencies

We set up WireMock or similar to simulate third-party APIs and services. Your test suite runs fast, stays stable, and never breaks because an external API was down.

We automate and wire into your pipeline

Full test suite in Postman/Newman or Python, plugged into your CI/CD. Every PR and every deployment triggers the suite automatically.

We add contract tests between services

Consumer-driven contract tests with Pact mean each microservice team can deploy independently without accidentally breaking other services.

We set up ongoing monitoring

Continuous API monitoring with regression detection. If a schema changes or a response degrades, we catch it before it becomes a production incident.

Tools We Use

Technology Stack for This Platform

We are tool-agnostic. we always select the best technology for your specific needs.

Postman

API design, testing, and team collaboration

Python Requests

Flexible API test scripting for complex scenarios

Pact

Consumer-driven contract testing between services

Newman

Postman CLI runner for CI/CD pipeline integration

WireMock

API mocking for fast, isolated test execution

REST Assured

Java-based REST API testing library

GitHub Actions

API tests triggered on every PR and deployment

Jira

Defect tracking and test traceability

Real Bug Examples

Real Bug Examples We Catch on APIs & Microservices

Real issues we find regularly. bugs that cost businesses money or reputation.

Sensitive endpoint missing authentication entirely

Impact:Immediate data breach and security incident

Schema change silently breaks downstream consumers

Impact:Production outage across multiple services

Race condition under concurrent API requests

Impact:Data corruption that is hard to reproduce

Access token not invalidated on logout

Impact:Session hijacking window remains open

No rate limiting on authentication endpoints

Impact:Brute force attack vector left wide open

PII returned in API error response bodies

Impact:GDPR violation with potential regulatory fines

FAQ

Common Questions

Everything you need to know about how we test this platform.

Have a specific question?

We're happy to discuss your platform, tech stack, and testing needs in a free 30-min discovery call. no commitment required.

Book a Free Call →

Free 30-min strategy call

Testing plan in 48 hours

No commitment required

01What API types and protocols do you test?

REST, GraphQL, gRPC, SOAP, WebSocket, and event-driven APIs. Kafka, RabbitMQ, SNS/SQS. We also test webhook delivery, third-party API integrations, and internal microservice communication.

02What actually is contract testing and do I need it?

03Can you work with our existing Postman collections?

04How do you handle third-party API dependencies?

05How long does a proper API test suite take to build?

Explore More