api-testing.service · contracts watched
API Testing Services
Your APIs are the contracts your whole product depends on. We test them directly — schema, integration, auth and errors — so a breaking change is caught in CI, not discovered by your frontend team or your partners in production.
what it is
The bug your users see started at an API nobody tested.
API testing verifies the contracts between your services directly at the interface — before any UI is involved. That a renamed field, a changed status code, a tightened auth rule or a slower response doesn't silently break the three things downstream that depended on it. It's the cheapest, fastest, most stable layer of testing there is: no browser, no flakiness, just the contract — kept honest on every commit.
is this you?
Check what's true. The page will be honest back.
Tick anything that sounds familiar — we'll tell you honestly whether dedicated API testing is your next move.
how we work
Four phases. An artifact at the end of each.
Inventory
We catalogue your APIs — REST and GraphQL, internal and partner — capture their schemas, and map which consumer depends on which contract. Many teams see this dependency map for the first time.
→ artifact: API inventory + consumer-dependency mapCover
Contract tests assert schema, status codes and data shape; integration tests verify real call chains; auth, error paths, pagination, rate limits and edge cases get explicit coverage.
→ artifact: contract + integration suite in your repoGate
Suites wire into CI: every PR is diffed against the recorded contracts, and a breaking change blocks the merge with the affected consumers named.
→ artifact: CI contract gate + breaking-change reports per PRWatch
Partner and third-party contracts are monitored for drift; the suite grows with each new endpoint; regressions are triaged by us before they reach your team.
→ artifact: contract-drift alerts + weekly API-health reportsee it run
Watch a breaking change get stopped at the PR.
A 15-second simulation of a contract suite running on a pull request — including the moment that saves a production incident: a removed field, caught before the merge.
the toolkit
Standard tooling, wired into your pipeline.
We test against your OpenAPI / GraphQL schemas as the source of truth, so the contract isn't an opinion — it's the spec, enforced. Suites run in your CI, owned by you.
deliverables
The contract layer your stack has been missing.
Every endpoint and which consumer relies on it — worth the engagement on its own.
Schema, status, shape and data assertions per endpoint, REST and GraphQL, in your repo.
Real call chains across services verified end to end, including partner APIs.
Breaking changes diffed on every PR and blocked before merge, with consumers named.
Authorization rules, error paths, pagination, rate limits — the cases that bite in production.
Third-party and partner contracts watched for change, so their surprise isn't your outage.
proof
Blocked at the PR. Never shipped.
A microservices platform kept breaking its own frontend with backend changes. A contract suite over 54 endpoints, gated in CI, caught six breaking changes at the pull request over the next quarter — each one stopped before merge, with the affected consumers automatically notified.
"Since partnering with QACraft, our software quality has improved dramatically — defect rates dropped and our release cycles are faster than ever."
pricing logic
A pod for the moving target. A build for the fixed one.
API QA Pod
Contract + integration coverage that grows with your services, priced by endpoints kept under test. Scale monthly.
your API surface, watchedContract Suite Build
A defined set of APIs covered, CI-gated, documented and handed over — one quote, 2–4 weeks.
you own every teststraight answers
Asked on every API call. Answered here.
What is API testing?
It verifies your service contracts directly at the interface: that endpoints return the agreed schema, status codes and data, handle auth and errors correctly, and keep doing so as code changes — catching breaking changes before any UI or user is affected.
Contract vs integration testing — what's the difference?
Contract testing checks one API against its agreed schema in isolation; integration testing checks that services work together across real call chains. A complete strategy uses both — contract for speed and precision, integration for real-world confidence.
How much does API testing cost?
An API QA pod is priced by endpoints kept under test; a fixed-price contract-suite build for a defined set of APIs runs 2–4 weeks with one quote. A 30-minute scoping call against your API surface gets you one exact number.
Do you test GraphQL too?
Yes — REST and GraphQL both, including schema validation, queries and mutations, authorization rules, and breaking-change detection on types and fields.
Will the tests run in our CI?
Yes — wired into your pipeline, running on every PR and nightly, so a breaking change is blocked at merge with the affected consumers named, not discovered in production.
Can you test partner / third-party APIs?
Yes — integration suites verify how your system handles partner APIs, including contract drift, error responses, timeouts and rate limits, so a third party's change doesn't quietly become your incident.
Keep every contract honest — on every commit.
Scope your API testing in 60 seconds — or bring your API surface to a 30-minute call and leave with a coverage plan and one number.