Validates required fields exists in the JSON

A json validator that has an option to check for duplicated keys

A public domain JSON Schema validator for JavaScript

A [JSONSchema](https://json-schema.org/) validator that uses code generation to be extremely fast.

Command line interface for Ajv JSON schema validator

webpack Validation Utils

A JavaScript implementation of a extendable, fully compliant JSON Schema validator.

Check if a buffer contains valid UTF-8

JWA, JWS, JWE, JWT, JWK, JWKS for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes

A fast and easy to use JSON Schema validator

A set of efficient utilities that extend the use of JSON (streaming, estimate size, NDJSON/JSONL, etc.)

Token-Oriented Object Notation (TOON) – compact, human-readable serialization of JSON data for LLM prompts

return the github url from a package.json file

Duplicate-install-safe value primitives for the DeepSeek Harness

This package provides the core HTTP request orchestration, response handling, and API call coordination.

An object schema merger/validator

Give me a string and I'll tell you if it's a valid npm package name

Tools to validate package.json files.

Node.js Google Authentication Service Account Tokens

A JSON Schema validator with support for custom keywords, vocabularies, and dialects