Product documentation
Updated February 12, 2026

Platform overview

How Total Shift Left turns your API contract into tests, coverage, and CI-ready quality gates—end to end.

What Total Shift Left is

Total Shift Left is a spec-first API quality platform. It helps teams convert an OpenAPI/Swagger contract into:

  • repeatable test runs
  • coverage visibility
  • CI/CD-friendly workflows

The goal is simple: catch contract drift and breaking behavior early—before it reaches production.

Core building blocks

API specifications

Your OpenAPI/Swagger spec is the source of truth for:

  • endpoints, parameters, and schemas
  • expected status codes and shapes
  • coverage expectations (what’s tested vs what exists)

Test generation

Generate a baseline suite quickly, then iterate:

  • start with safe, read-only endpoints
  • scope by tags/paths to keep early runs fast
  • expand to write endpoints once auth and test data are ready

Configuration

Stable runs depend on predictable inputs:

  • base URL per environment (dev → stage → prod)
  • authentication strategy
  • timeouts/retries that reduce flaky failures

See the Configuration section for fundamentals.

Runs and results

A run produces:

  • pass/fail outcomes
  • failure evidence you can reproduce
  • coverage insights aligned to the spec
  1. Connect a spec
  2. Generate a baseline suite
  3. Run against a dev/stage environment
  4. Stabilize auth + test data
  5. Integrate into CI as a quality gate

Related articles

Next steps

Still stuck?

Tell us what you’re trying to accomplish and we’ll point you to the right setup—installation, auth, or CI/CD wiring.