#validation

AI-safe .env files: Schemas for agents, Secrets for humans.

Progressively enhance HTML forms with React. Build resilient, type-safe forms with no hassle using web standards.

A friendly library for parsing HTTP request arguments, with built-in support for popular web frameworks, including Flask, Django, Bottle, Tornado, Pyramid, webapp2, Falcon, and aiohttp.

The ontology is the software. One executable business ontology: AI writes it, the runtime runs it, agents operate it, you own it. Open protocol & runtime, Apache-2.0.

AI-native TypeScript bot framework — one codebase for 20+ chat platforms (QQ, Discord, Telegram, Slack, WeChat…). Opt-in AI agent with MCP, tools & security policies. <10MB core.

structured outputs for llms

ORM

Curated catalog of generally useful kpt functions

A flexible forms validation and rendering library for Python.

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

The Open Standard for Generative UI

Validation and serialization layer for the Azure Functions Python v2 programming model

The missing linter and lsp for AI coding assistants. Validate CLAUDE.md, AGENTS.md, SKILL.md, hooks, MCP. Plugin for all major IDEs included, with autofixes.

Validate your env variables using Ajv and dotenv

A fluent API to generate JSON schemas

The most powerful data validation library for JS

Type-safe dynamic forms library for Angular 21 signal forms

📋 Validation resolvers: Yup, Zod, Superstruct, Joi, Vest, Class Validator, io-ts, Nope, computed-types, typanion, Ajv, TypeBox, ArkType, Valibot, effect-ts, VineJS and Standard Schema

Full-stack CRUD, simplified, with SSOT TypeScript entities

Super-fast/easy runtime validators and serializers via transformation

A light-weight, flexible, and expressive statistical data testing library

✅ Headless form validation library for Vue.js

A Typescript framework to help you get an API server up and running with I/O schema validation and custom middlewares in minutes.

💻 a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript

Uncommonly extensible assertions for the beautiful people

ESLint plugin that adds custom linting rules to enforce best practices when using Zod

The lightweight, schema-first, and fully type-safe form library for React, Solid, Vue, Svelte and more.

Options Validation

PurRDF — one RDF 1.2 engine, one behavior, in Rust, Python, WebAssembly and C. Deterministic BM25 full-text search, exact GeoSPARQL 1.1 and embedding kNN answered from SPARQL, in-process, over one dataset: the three jobs a triple store usually kept PostgreSQL beside it for. Plus native codecs, RDFC-1.0, SHACL, ShEx, entailment and GTS transport.