#json-schema

Modern TypeScript libraries for building scalable web applications.

Reference implementation of the Jupyter Notebook format

Customizable and hackable json-validator and json-schema utilities for traversal, data generation and validation

Fastify plugin for zod-openapi

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Header-only C++ library for JSON Schema validation, with support for many popular parsers

Source generator to convert C# interfaces to JSON Schema for AI tool calling

Creates (immutable) PHP model classes from JSON-Schema files including all validation rules as PHP code

Provenance layer for AI agent sessions — record, replay, and reason about Claude Code (and other agent) work.

Compile JSON Schema to TypeScript type declarations

Create Zod types from JSON Schema at runtime

OpenAPI generator for Rust: typed models, async Reqwest/SSE clients, and Axum server scaffolding for OpenAPI 3.0/3.1.

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

Community-owned data schemas for Warhammer 40,000 developer tooling

Inkdrop data model definitions in json-schema and flowtype

Escape version skew

Make forms easier, LLM tools safer. Natural-language quantities, units, dates & ranges parsed into canonical values — zero dependencies, two-way.

Verifies & compiles reduced-motion-safe, on-budget UI animation for AI-generated web apps. Validated specs → deterministic GSAP/WAAPI-CSS; WCAG 2.2.2 + 2.3.3 checks. MIT core + keyless MCP server. Not Motion.dev/Framer Motion, not the Android/iOS MotionSpec classes, not a video generator.

Lightweight, durable, queue-first event streaming system.

JSON powered forms for Angular

A specification json schema for 3D/CAD parts.

Official SDKs for JSON Structure schema and instance validation

Simple config handling for your app or module

JSON Schema (draft 2020-12) and validation helpers for Slack Block Kit payloads.

Zero config, accurate JSON schema generator for helm charts via static analysis

JSON Schema for CV/Resume parsing and validation. Self-hosted with JSON-LD, Schema.org integration, online validator, converter tools, and XML support.

An open, framework-agnostic format for what a test run produced — the .evidence pack, and the library + CLI that validate and seal it.

Production-ready TypeScript library for converting OpenAPI specifications into MCP (Model Context Protocol) tool

OpenAPI 3.1, typed endpoints, and zero-runtime TypeScript clients for Hayate

Factorio Mod Tool Kit