client-driven hypermedia APIs. Use preloading to create fast and idiomatic client-driven REST APIs.

Vulcain is a brand new protocol using preload hints, Early Hints or HTTP/2 Server Push to create fast and idiomatic client-driven REST APIs.

An open source gateway server which you can put on top of any existing web API to instantly turn it into a Vulcain-compatible one is also provided! It supports hypermedia APIs but also any "legacy" API by documenting its relations using OpenAPI.

• Vulcain @ GitHub.

detect API auth weaknesses.

Autoswagger is a command-line tool designed to discover, parse, and test for unauthenticated endpoints using Swagger/OpenAPI documentation. It helps identify potential security issues in unprotected endpoints of APIs, such as PII leaks and common secret exposures.

Related contents:

• AutoSwagger - L'outil gratuit qui trouve les failles d'API que les hackers adorent @ Korben :fr:.

Typesafe APIs Made Simple 🪄. Easy to build APIs that are end-to-end type-safe and adhere to OpenAPI standards.

oRPC is a powerful combination of RPC and OpenAPI, makes it easy to build APIs that are end-to-end type-safe and adhere to OpenAPI standards

• oRPC @ GitHub.

Convert OpenAPI 3.0/3.1 schemas to TypeScript types and create type-safe fetching.

openapi-typescript turns OpenAPI 3.0 & 3.1 schemas into TypeScript quickly using Node.js. No Java/node-gyp/running OpenAPI servers necessary.

• OpenAPI TypeScript @ GitHub.

Incrementally adoptable type-safety for your new and existing APIs. RPC-like client, contract, and server implementation for a pure REST API

ts-rest offers a simple way to define a contract for your API, which can be both consumed and implemented by your application, giving you end to end type safety without the hassle or code generation.

• ts-rest @ GitHub.

FastOpenAPI is a library for generating and integrating OpenAPI schemas using Pydantic v2 and various frameworks (Falcon, Flask, Quart, Sanic, Starlette, Tornado).

The agents.json Specification is an open specification that formally describes contracts for API and agent interactions, built on top of the OpenAPI standard.

• agents.json @ GitHub.

Free OpenAPI Spec Editor. Craft robust OpenAPI Specs Faster.

A free openAPI spec editor and linter that breaks down your spec into fragments to make editing easier and more intuitive.

📘 OpenAPI/Swagger-generated API Reference Documentation. Generate beautiful API documentation from OpenAPI.

Redoc is an open source tool for generating documentation from OpenAPI (formerly Swagger) definitions.

• Redoc @ GitHub.

Connexion is a modern Python web framework that makes spec-first and api-first development easy. You describe your API in an OpenAPI (or swagger) specification with as much detail as you want and Connexion will guarantee that it works as you specified.

• Connexion @ GitHub.
• Développement d'API Rest avec Connexion - Partie 1 @ DevSecOps :fr:.

📘 OpenAPI/Swagger-generated API Reference Documentation. Generate beautiful API documentation from OpenAPI

Redoc is an open source tool for generating documentation from OpenAPI (formerly Swagger) definitions.

Document, Test & Discover APIs.

The modern open-source developer experience platform for your APIs. Create world-class API Docs with a built-in interactive playground which seamlessly turns to a full featured API Client.

Scalar is an open-source platform with:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern Rest API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

• Scalar @ GitHub.

Describe APIs. Describe your data up front and generate schemas, API specifications, client / server code, docs, and more.

TypeSpec is a language for defining cloud service APIs and shapes. TypeSpec is a highly extensible language with primitives that can describe API shapes common among REST, OpenAPI, gRPC, and other protocols.

• TypeSpec @ GitHub.
• Introduction to TypeSpec @ Nordic APIs.
• After 6 years of using GraphQL in production we aren't reaching for it as much as we once did. @ Mahdi Y.'s LinkedIn.

Terminal UI to list, browse and run APIs defined with openapi spec.

Terminal UI to list, browse and run APIs defined with OpenAPI v3.0 spec.

Library for patching destination data with source data only if destination data remains valid after that.

This library provides a "validating hydrator", a service that patches destination data with source data only if destination data remains valid after that. Source and destination can be anything - scalars, arrays, objects... So either you want to make a partial update of ORM entity with parsed JSON from HTTP-request or produce a plain DTO from this entity to send in AMQP-message this library can help you to do that in a neat convenient way.

Generate clients, servers, and documentation from OpenAPI 2.0/3.x documents.

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3).

• OpenAPI Generator @ GitHub.

OpenHue API is an open-source project that provides a comprehensive OpenAPI specification for the Philips Hue REST API

• OpenHue @ GitHub.
• OpenHue – Maitrisez l’éclairage connecté de vos Philips Hue avec cette API open-source @ Korben :fr:.

API Code & Client Generator.

Swagger Codegen can simplify your build process by generating server stubs and client SDKs for any API, defined with the OpenAPI (formerly known as Swagger) specification, so your team can focus better on your API’s implementation and adoption.

Swagger Codegen @ GitHub

schema is a command line tool part of the API Platform framework that instantly generates a set of PHP classes from RDF vocabularies such as (but not limited to) Schema.org or ActivityStreams. Alternatively, it can generate PHP classes from an OpenAPI documentation.

API Platform Schema Generator @ GitHub.

Use Kiota to generate API clients to call any OpenAPI-described API.

Kiota is a command line tool for generating an API client to call any OpenAPI described API you are interested in. The goal is to eliminate the need to take a dependency on a different API SDK for every API that you need to call. Kiota API clients provide a strongly typed experience with all the features you expect from a high quality API SDK, but without having to learn a new library for every HTTP API.

Kiota @ GitHub.

Redoc is an open-source tool for generating documentation from OpenAPI (fka Swagger) definitions.