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Techluminate

API Contract Test Pack

API contract tests that fail the build when an endpoint changes shape, so back-end releases stop breaking the apps that depend on them.

Timeline
9 working days
Deliverables
7 listed
Practice
QA & Test Automation
Fixed fee
₹18,999
01Overview

What this engagement delivers

Client applications often break not because an API is down but because a field has quietly become nullable, and contract tests catch exactly that. We build a suite that validates every response against its schema, checks status codes and error formats, and enforces key authorisation rules, such as preventing one customer from fetching another's records. The suite runs on every pull request, so a breaking change shows up as a failed build rather than a partner's support ticket weeks later.

02Deliverables 7 items

What you receive

  1. Contract tests for up to 40 endpoints validated against the schema
  2. Status code, error format and header assertions per endpoint
  3. Authorisation tests confirming role boundaries and object-level access
  4. Negative tests covering malformed input and missing fields
  5. CI integration with clear reporting on which contract broke
  6. Schema snapshots so unintended changes are visible in a diff
  7. Documentation on adding tests for new endpoints
03Process

How the work runs, in 4 stages

  1. Stage 1: Baseline

    Endpoints catalogued and current response shapes captured

  2. Stage 2: Specify

    Expected contracts confirmed with your engineers, gaps flagged

  3. Stage 3: Build

    Tests written per endpoint, including negative and authorisation cases

  4. Stage 4: Integrate

    Suite added to CI and demonstrated with a deliberate break

04Fit & inputs

Who it suits, and what we need from you

Ideal for

  • Teams with a mobile app that cannot be updated as fast as the server
  • Products with external partners consuming the API
  • Backends where refactoring is avoided out of fear

What we need from you

  • API access with credentials for each role
  • An OpenAPI specification if you have one, though we can work without
  • An engineer to confirm intended behaviour where it is ambiguous

You provide these through the technical brief in your dashboard after checkout.

05Benefits

What changes for your team

  • 01

    Breaking changes fail in CI instead of on a customer device

  • 02

    Refactoring becomes safer because the contract is enforced

  • 03

    Shipped mobile apps stop breaking on server releases

06FAQ

Questions about this engagement

No. Unit tests check internal logic. These check the promise your API makes to everyone consuming it.

We capture current behaviour and confirm with you what is intentional. This step often uncovers a few unexpected behaviours.

Yes, through schema and query-level assertions. Same approach, same price.

This is a remote engineering engagement — nothing is shipped physically. Work is delivered into systems you control. See delivery & handover and refunds & cancellation for the full terms.

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Next step

Bring the problem. Leave with a defined plan.

Pick the engagement that matches what you need, or tell us about the system you are working on and we will point you to the right starting place.