How to Validate JSON Schema: A Complete Developer Guide
If you've ever built or consumed a REST API, you've dealt with JSON. But how do you make sure the JSON data your application receives actually matches what you expect? That's where JSON Schema come...

Source: DEV Community
If you've ever built or consumed a REST API, you've dealt with JSON. But how do you make sure the JSON data your application receives actually matches what you expect? That's where JSON Schema comes in — a powerful, declarative way to describe and validate the structure of JSON data. In this guide, we'll cover everything you need to know about JSON Schema validation: what it is, why it matters, how to write schemas from scratch, and how to validate them using code and online tools. Whether you're validating API responses, form submissions, or configuration files, this guide has you covered. What Is JSON Schema? JSON Schema is a vocabulary that lets you annotate and validate JSON documents. Think of it as a contract: it defines the expected structure, data types, constraints, and relationships within a JSON object. The schema itself is written in JSON, which makes it easy to read, share, and version-control. The current stable specification is Draft 2020-12, though Draft 7 and Draft 201