#validation

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.

A Ruby toolkit for securities identifiers: validate, parse, normalize, detect, convert, generate, classify, and repair. Supports ISIN, CUSIP, CEI, SEDOL, FIGI, LEI, IBAN, CIK, OCC, WKN, Valoren, CFI, FISN, BIC, DTI, and UPI.

JSON Schema validator written in JavaScript for NodeJS and Browsers

A simple credit card validation library in JavaScript

⚡ Ultra-lightweight international phone number formatter & validator with auto-sync to Google libphonenumber

Firely's official FHIR validator API for validating HL7 FHIR resources against profiles.

Comprehensive list of free email provider domains for signup validation and disposable filtering.

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

The fastest embeddable spreadsheet engine - parse, evaluate & mutate Excel workbooks from Rust, Python, or the browser. Arrow-powered, 400+ functions.

Pure Python HWPX automation: read, edit, generate, and validate documents without Hancom Office.

CTRF reference implementation in TypeScript

The home of the CUE language! Validate and define text-based and dynamic configuration

Go library for JSON Schema Draft 2020-12 validation with enhanced outputs and multilingual error messages

Prisma generator that emits TypeScript classes decorated for @nestjs/swagger, class-validator, and TypeGraphQL — DTO/entity classes generated straight from schema.prisma.

Go validation library with functional API built on top of generics, statically typed and batteries included :fire:

Is the given string an acceptable npm package name?

The official client libraries for accessing SmartyStreets APIs from javascript.

A set of packages and tools for working with OpenAPI, Swagger, Arazzo and Overlay Specification documents.

Straightforward library for building domain-driven microservice architectures, implementing a simple evolutionary architecture.

Socket.IO solution with I/O validation that generates AsyncAPI specs and consumer contracts.

Fluent and extremely fast validation for Laravel

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

JSON Schema validator for Draft 2020-12, draft 7 and the v1 dialect. Compiles schemas to plain JavaScript on first use, falls back to an interpreter where code generation is blocked, and points at the line that failed. No required binaries.

A common library for WPF components and MVVM programming model

Open-source document framework

Vue 2/3 isomorphic JSON editor, viewer, formatter and validator.

Documentation tool built for software architecture. Document your domains, services, events and schemas — for your teams and your AI agents.

The form framework for coding agents

Faster Agentic Coding with confidence in every commit

Validate and format international phone numbers