#json-schema

The CLI for working with JSON Schema. Covers formatting, linting, testing, bundling, and more for both local development and CI/CD pipelines

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

Link Modeling Language (LinkML) model

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

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

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.

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

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

The fastest JSON schema Validator. Supports JSON Schema draft-04/06/07/2019-09/2020-12 and JSON Type Definition (RFC8927)

Support for Json Schema validation and entity generation

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

OpenAPI Web component to generate a UI from the spec.

JSON Schema validation with first-class TypeScript. AOT-compile schemas to dependency-free ESM modules or validate at runtime, with type inference from your schemas. Pure JS by default, optional native accelerator. Draft 2020-12 + Draft 7, full $dynamicRef/$anchor, standard error format.

Heimdall Data Format (HDF) is a standardized JSON schema for representing security assessment baselines and results across diverse tools and platforms.

Generate JSON Schema documents from Rust code

schemaui turns JSON Schema documents into fully interactive terminal UIs powered by ratatui, crossterm, and jsonschema. The library parses rich schemas (nested sections, $ref, arrays, key/value maps, pattern properties…) into a navigable form tree, renders it as a keyboard-first editor, and validates the result after every edit

Support files exposing JSON from the JSON Schema specifications to Python

Svelte 5 library for creating forms based on JSON schema.