#json-schema

A pluggable API specification generator. Currently supports the OpenAPI Specification (f.k.a. the Swagger specification)..

📝 JSON powered / Dynamic forms for Angular

A CLI and set of pre-commit hooks for jsonschema validation with built-in support for GitHub Workflows, Renovate, Azure Pipelines, and more!

Parse, Resolve, and Dereference JSON Schema $ref pointers in Node and browsers

Turn an OpenAPI spec into a local API in one command. Build and test your frontend with custom responses, shared state, and simulated failures, without waiting for the backend.

Huma REST/HTTP API Framework for Golang with OpenAPI 3.1

vacuum is the worlds fastest and most versatile OpenAPI, AsyncAPI & JSON Schema linter, docs generator and toolkit. It tears through API specs at light speed. 100% compatible with Spectral rulesets, and OpenAPI 3.0, 3.1 and 3.2

Faster structured generation

A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and TOML

A fast Java JSON schema validator that supports draft V4, V6, V7, V2019-09 and V2020-12

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Semantic parser for API specifications

Validate element templates based on JSON Schema.

Build and manage the AJV instances for the fastify framework

:seedling: Jane is a set of libraries to generate Models & API Clients based on JSON Schema / OpenAPI specs

Cross-specification JSON referencing (JSON Schema, OpenAPI, and the one you just made up!)

Run AI models locally on your machine with node.js bindings for llama.cpp. Enforce a JSON schema on the model output on the generation level

Fast and well tested serialization library

ESLint plugin that validates data using JSON Schema Validator.

Extremely fast, in memory, serialization, reflection, and RPC library for C++. JSON, BEVE, BSON, CBOR, CSV, JSONB, MessagePack, TOML, YAML, EETF

JSON Schema validator written in JavaScript for NodeJS and Browsers

ESLint rules that validate JSON, JSONC, JSON5, YAML, TOML, Markdown frontmatter, JavaScript exports, and Vue custom blocks against their schema.

JSON Schema Based Editor

Link Modeling Language (LinkML) model

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.

Transpile JSON-Schema (.json) files to JavaScript (.js or .mjs) using ajv

Powerful, joyful building blocks for modern cloud-native applications.

Zero-boilerplate type-safe Rust configuration library — #[derive(Config)] with TOML/JSON/YAML/INI/.env sources, priority-chain merge, hot reload with canary rollout, field encryption, remote backends (etcd/Consul/Nacos/K8s), and diagnostic CLI

Official Python SDK for the ScrapeGraph AI API. Smart scraping, search, crawling, markdownify, agentic browser automation, scheduled jobs, and structured data extraction

Pacto (/ˈpak.to/ — from Spanish: pact, agreement) is an open, OCI-distributed contract standard for cloud-native services.