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TestSync Lab

Backend quality

API testing that keeps integrations trustworthy

Contract, auth, and failure-path QA for REST and GraphQL so UI and partners do not inherit silent backend breaks.

Outcomes teams buy

  • Fewer production API breaks

    Status codes, payloads, and auth rules checked before merge week.

  • CI-ready collections

    Suites you can run in pipelines — not one-off Postman clicks.

  • Clear ownership

    Findings map to endpoints and contracts engineers already know.

What’s included

  • REST / GraphQL contract validation
  • Auth, permissions, and error contracts
  • Negative and edge payload cases
  • Regression pack for critical APIs
  • Growth+ retainer automation handoff

Related: all services · QA for US teams · outsourced QA

FAQ

  • Do you test APIs without a full UI suite?

    Yes. Many teams start API QA before heavy UI automation because it catches cheaper defects faster.

  • Which package includes API testing?

    Growth and Scale include API validation. Basic is manual-first; we can still spot-check critical APIs when risk is high.

Ready for api testing services?

Book a free QA audit. We map risk to Basic, Growth, or Scale — or tell you if a focused sprint is enough.

Free QA Audit