Generating API Contracts

Overview

Generate OpenAPI 3.0/3.1 specifications and consumer-driven contract tests from existing API implementations, design documents, or database schemas. Produce machine-readable contracts that serve as the single source of truth for code generation, documentation, testing, and gateway configuration, with Pact integration for consumer-driven contract verification.

Prerequisites

• API implementation with route definitions and handler logic, or design requirements document
• OpenAPI authoring tool: Swagger Editor, Stoplight Studio, or IDE with OpenAPI extension
• Consumer-driven contract framework: Pact (polyglot), Spring Cloud Contract (Java), or Dredd (generic)
• Schema validation tool: Spectral for OpenAPI linting
• Version control for contract files with diff-based review process

Instructions