OpenAPI Diff and Breaking Changes

🦋 Auto-validates api requests, responses, and securities using ExpressJS and an OpenAPI 3.1.x or 3.0.x specification

The world's coolest API Validation and compliance tool. Validate APIs against OpenAPI specifications and much more

OpenAPI definitions, converters and LLM function calling schema composer.

A FAST C++ library to validate the HTTP requests against the OpenAPI specifications of the REST server.

Gesso — OpenAPI 3.0/3.1/3.2 contract testing for PHP. Framework-independent core with Laravel, Symfony, Pest, and PSR-7 adapters. PHPUnit coverage, request/response validation, fuzzing, and drift detection.

A Kong plugin for validating HTTP requests against OpenAPI specifications.

A FAST Lua module to validate the HTTP requests against the OpenAPI specifications of the REST server.

Zero config Rest API testing framework using jest, axios, ajv.

Rust OpenAPI Specification (v2, v3.0, v3.1, 3.2) and Validation CLI

OpenAPI 3.x validator for TypeScript. Check specs, validate HTTP traffic, and compile standalone validators.

Zero-config OpenAPI (Swagger) 3.x linter: broken $refs, duplicate operationIds, missing responses, undeclared path params, REST naming, security gaps. JSON+YAML, deterministic, runs in CI. A lightweight Spectral alternative.

Validate requests against OpenAPI schema

GitHub Action to validate OpenAPI | Overlay | Arazzo | AsyncAPI specs (all versions) with roas