Platform


Generate CI-Ready API Tests From OpenAPI in Minutes

Import your OpenAPI, Swagger, or Postman collections. Generate tests automatically. Run in CI/CD or locally. Track coverage gaps — without writing test scripts.

Shift-Left API – API test automation
The Problem

Why API Testing Breaks at Scale

You can't answer "what percentage of our API is actually tested?" — coverage gaps hide until production incidents

Scripted tests break on every API change, and maintaining them costs more than writing them

CI/CD pipelines run without meaningful API quality gates — failures surface too late

Manual testing doesn't scale across dozens of microservices and hundreds of endpoints

Mocking is inconsistent across teams, blocking parallel frontend and backend development

Contract drift between services goes undetected until integration failures hit production

Total Shift Left solves this with specification-driven test automation. Import your OpenAPI spec, generate tests with schema-aware AI, run them in CI/CD, and track coverage — all without writing test code.

Built for teams that ship APIs

From first import to full CI/CD coverage in minutes, not weeks.

0 min

First Tests Generated

From spec import to test suite

0%

Coverage From Spec

Endpoint coverage on first import

0 scripts

Zero Test Scripts

No code to write or maintain

0 step

CI/CD Integration

Pipeline-native execution

Who Total Shift Left is built for

We built this for teams that need automated API quality at scale — not another API exploration tool.

Built for you if you...

  • + Ship REST or SOAP APIs and need automated test coverage without writing test code
  • + Lead QA and need to automate regression suites from API specifications
  • + Run DevOps/Platform and want API quality gates in your CI/CD pipeline
  • + Manage engineering and need visibility into API test coverage across services
  • + Have OpenAPI or Swagger specs and want to turn them into a working test suite

Probably not the right fit if you...

  • - Only need ad-hoc API exploration or debugging (try Postman or Insomnia)
  • - Are looking for API documentation tools, not testing
  • - Have a mature custom test framework you want to keep maintaining

How AI-Powered No-Code API Testing Works

Shift-Left API turns your OpenAPI, Swagger, and Postman collections into executable API regression and contract tests—enabling shift-left API testing in your CI/CD pipeline.

How it works

One platform for API testing and automation.

Import API to Project – OpenAPI/Swagger file upload or URL
Generating tests – AI test generation in progress
Endpoint functional coverage and test execution – run selected tests, view coverage
Shift-Left API – Workflow sequence: build and run API workflow diagrams with nodes and connections
API mock server running – active mocks and standalone server URL
Schema-Aware Test Generation

Specification-Driven API Testing From Your OpenAPI Spec

Our AI analyzes your OpenAPI and Swagger schemas to generate positive tests, negative tests, edge cases, and security checks. Coverage-driven gap detection finds untested endpoints. Contract-aware validation catches schema drift.

Most Popular

Schema-Aware AI Test Generation

AI-driven test generation from OpenAPI schemas with contract-aware coverage analysis. Our AI analyzes your endpoints, request/response schemas, and creates tests for happy paths, edge cases, and error scenarios automatically.

AI Coverage Gap Detection

Specification-driven coverage analysis identifies gaps in your API test suite from OpenAPI schemas. Get intelligent recommendations for additional test cases to achieve complete endpoint and contract coverage.

Intelligent Edge Case Detection

Our machine learning models analyze your API schemas to automatically detect and generate tests for boundary conditions, null values, and edge cases that manual API regression testing often misses.

No-Code API Test Automation

Create sophisticated API tests without writing code. Visual test builder with drag-and-drop interface makes API test automation accessible to QA teams, business users, and non-developers alike.

Self-Healing API Tests

AI automatically adapts your tests when API schemas change. Reduce API test maintenance overhead with intelligent test updates that keep pace with your evolving API landscape and contract changes.

Predictive API Quality Analytics

Machine learning models predict potential API failures before they happen. Proactive quality insights help you reduce production incidents and increase release frequency with confidence.

Experience the power of AI-driven API test automation

API Testing Use Cases

Automated regression testing, contract validation, coverage gap detection, API mocking, and CI/CD quality gates — all generated from your API specifications.

API Regression Testing for Microservices

Catch regressions early with AI-generated API tests across all your microservices endpoints.

  • Automated test generation from OpenAPI/Swagger
  • Schema-aware edge case detection
  • Scheduled test execution in CI/CD pipelines

API Contract Testing and Validation

Ensure API consumers and providers stay in sync with contract-based test synthesis.

  • Schema validation against OpenAPI and Swagger specs
  • Response structure and type verification
  • Automatic breaking change detection

API Mocking for Parallel Development

Generate realistic API mock servers from your specs so frontend and backend teams can work in parallel.

  • Auto-generated mock servers from OpenAPI specs
  • Customizable response scenarios for edge cases
  • Develop and test without live backend dependencies

CI/CD API Testing and Shift-Left Automation

Integrate API tests directly into your CI/CD pipeline to catch defects before they reach production.

  • Native GitHub Actions, GitLab CI, Jenkins integration
  • Fail builds on test failures with clear reports
  • Shift-left testing with every pull request
Why We're Different

Shift-Left API vs. Traditional Methods

Unlike UI-centric tools that bolt on API testing, Shift-Left API is built OpenAPI-first for specification-driven test automation.

Approach

Traditional: Script-heavy
Shift-Left API: No-code + AI

Test Design

Traditional: Manual test creation
Shift-Left API: Auto-generated from OpenAPI

Maintenance

Traditional: High maintenance overhead
Shift-Left API: Self-healing API tests

Coverage

Traditional: Limited visibility
Shift-Left API: AI coverage gap detection

CI Feedback

Traditional: Late-cycle testing
Shift-Left API: Shift-left CI/CD testing

Spec Support

Traditional: Limited formats
Shift-Left API: OpenAPI, Swagger, Postman, GraphQL

Metrics based on internal usage and early customer deployments.

CI/CD and Developer Tool Integrations

Native plugins for Azure DevOps and Jenkins. REST API for GitHub Actions, GitLab CI, CircleCI, and Bitbucket Pipelines. Run tests, enforce quality gates, and get JUnit reports in your existing workflow.

CI/CD Pipelines

GitHub Actions
GitLab CI
Jenkins
Azure DevOps
CircleCI
Bitbucket Pipelines
GitHub Actions
GitLab CI
Jenkins
Azure DevOps
CircleCI
Bitbucket Pipelines

Collaboration Tools

Jira
Slack
Linear
Microsoft Teams
PagerDuty
Jira
Slack
Linear
Microsoft Teams
PagerDuty

API Specifications

OpenAPI
Swagger
Postman
GraphQL
REST API
OpenAPI
Swagger
Postman
GraphQL
REST API

Don't see your tool? We're always adding new integrations.

Request an integration
Why Total Shift Left

Why Teams Switch to Spec-Driven API Testing

Stop maintaining test scripts. Start generating CI-ready tests from the specs you already have.

See pricing

Built for OpenAPI-First Teams

Purpose-built for specification-driven test automation. Import your OpenAPI or Swagger spec and get a complete test suite — not a collection of manual requests.

Zero Test Scripts to Maintain

No scripting, no test code, no framework configuration. Generate, run, and maintain tests through a visual interface accessible to QA teams and developers alike.

Self-Healing Tests That Adapt

Tests automatically adapt to non-breaking spec changes. You fix real regressions, not false positives from routine API evolution.

CI/CD-Native Quality Gates

Run tests on every push with Azure DevOps, Jenkins, or any CI platform. Gate deployments on coverage thresholds, pass rates, and contract compliance.

FAQs

Contact us at

support@totalshiftleft.com

to learn more

  • How does Total Shift Left generate API tests from OpenAPI specs?
    Total Shift Left analyzes your OpenAPI or Swagger specification to understand every endpoint, parameter, request body, and response schema. Our schema-aware AI then generates comprehensive test cases covering happy paths, edge cases, error scenarios, and security checks — all without you writing a single line of test code. Import your spec and have CI-ready tests in minutes.
  • What makes this different from Postman for API testing?
    Postman is designed for API exploration and manual request building. Total Shift Left is designed for automated, spec-driven test generation at scale. You import your OpenAPI spec and get a full test suite — with coverage tracking, contract validation, self-healing tests, and CI/CD execution built in. No collections to maintain, no scripts to write.
  • Can I run generated tests in my CI/CD pipeline?
    Yes. Total Shift Left provides native plugins for Azure DevOps and Jenkins, plus a REST API for GitHub Actions, GitLab CI, CircleCI, and Bitbucket Pipelines. Tests run as part of your pipeline with JUnit/JSON output, and you can configure quality gates to fail builds based on coverage thresholds or test failures.
  • What API specifications and formats are supported?
    Total Shift Left supports OpenAPI 3.0, OpenAPI 3.1, Swagger 2.0, and Postman Collections. Upload a spec file, paste a URL, or import directly from your API gateway. The platform auto-discovers endpoints, parses schemas, and generates tests for every operation.
  • How does coverage tracking work?
    The platform tracks test coverage at multiple levels: endpoint coverage (which endpoints have tests), method coverage (GET, POST, PUT, DELETE), status code coverage (2xx, 4xx, 5xx), and parameter coverage. The coverage dashboard shows gaps visually, and you can generate tests for uncovered areas with one click.
  • What are self-healing tests?
    When your API spec changes, self-healing tests automatically adapt to non-breaking changes — like new optional fields or updated descriptions. For breaking changes (removed endpoints, type changes), the platform flags the impact, shows affected tests, and suggests updates. You fix real regressions, not false positives from routine spec evolution.
  • How does API contract testing work in Total Shift Left?
    Contract testing validates that your API responses match the schema defined in your OpenAPI specification. Every test run checks response status codes, field types, required fields, and value constraints against the spec. Schema drift — where the implementation diverges from the contract — is caught automatically before it reaches production.
  • Can non-developers use Total Shift Left?
    Yes. The platform is fully no-code. QA engineers, business analysts, and team leads can import API specifications, review generated tests, trigger test runs, and analyze coverage — all through a visual interface. No programming, no test scripting, no framework configuration required.
  • Is this suitable for microservices architectures?
    Yes. Total Shift Left is built for teams managing multiple APIs. Each service gets its own project with independent coverage tracking, contract validation, and CI/CD execution. You can monitor test health across all services from a single dashboard.
  • How do I get started?
    Sign up for a free 15-day trial — no credit card required. Import your first OpenAPI or Swagger spec, and the platform generates a complete test suite in minutes. From there, connect your CI/CD pipeline and start tracking coverage gaps across your APIs.

Generate your first API test suite in minutes

Import your OpenAPI spec. Get CI-ready tests. Track coverage. No code, no credit card, 15-day free trial.