CATS is a REST API Fuzzer and negative testing tool for OpenAPI endpoints. CATS automatically generates, runs and reports tests with minimum configuration and no coding effort. Tests are self-healing and do not require maintenance.

vacuum is the worlds fastest OpenAPI 3, OpenAPI 2 / Swagger linter and quality analysis tool. Built in go, it tears through API specs faster than you can think. vacuum is compatible with Spectral rulesets and generates compatible reports.

A tool for generating Protobuf v3 schemas and gRPC service definitions from OpenAPI specifications

WIP OpenAPI tooling for Rust.

OpenAPI Tool Servers

A tool for auditing endpoints defined in exposed (Swagger/OpenAPI) definition files.

A collection of Editors, Linters, Parsers, Code Generators, Documentation, Testing

OpenAPI/Swagger UI document, quickly generate mock params and call api, also simplified postman tool. 基于 OpenAPI/Swagger 规范的接口文档，快速模拟请求参数并调用接口，也是简化版 postman 工具，欢迎提功能请求、bug

A tool for generating code base on an OpenAPI schema.

A tool that converts OpenAPI specifications to MCP server

Swagger 2.0 and OpenAPI 3.0 command-line tool

🔥 OpenAPIDesigner is an open-source OpenAPI specification design tool that allows developers to design, write, and validate OpenAPI specifications.

A tool for generating Refit interfaces and contracts from OpenAPI (Swagger) specifications

Comprehensive tooling for working with OpenAPI definitions.

A cli tool to generate random mock data from OpenAPI definition for msw.

VisualStudio Code OpenAPI tools

Turn any openapi file into an mcp server, with just the tools you need.

An efficient API documentation management tool that fully adheres to the OpenAPI specification and incorporates advanced LLM technology. This tool can automate the generation of API documentation, data models, and test cases, greatly enhancing development efficiency and documentation quality.

A collection of libraries to simplify API documentation and exploration for Ktor applications. Generates OpenAPI specifications and provides Swagger UI and ReDoc.

Command line tool to detect breaking changes between two openapi specifications

A tool&lib that can automatically convert OpenAPI documents into Higress remote MCP server configurations.

A set of packages and tools for working with OpenAPI, Swagger, Arazzo and Overlay Specification documents.

Tool for finding URLs, paths, secrets and generating raw HTTP requests and OpenApi specifications from config files and annotations used in JAR / WAR / APK applications.

:capital_abcd: Tool for generation samples based on OpenAPI(fka Swagger) payload/response schema

OASIS OData TC: Tools for producing API descriptions for OData services that adhere to the OpenAPI Specification

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

Massimo is an API SDK client and CLI tool for creating clients for remote OpenAPI or GraphQL APIs

A library that simplifies OpenAPI (fka Swagger) integrations/tooling.

A tool geared towards pentesting APIs using OpenAPI definitions.

Merge multiple OpenAPI 3.0 (Swagger) files together via a library or CLI tool.