JSON Schema

JSON Schema

JSON Schema is the standard vocabulary for describing and validating the structure of JSON documents. It is embedded in OpenAPI specs, Kubernetes CRDs, IDE autocompletion, and nearly every modern config validation pipeline. If you are exposing or consuming structured JSON at a system boundary, JSON Schema is the correct tool for documenting and enforcing that contract.

Blurb

JSON Schema is the vocabulary that enables JSON data consistency, validity, and interoperability at scale.

Summary

JSON Schema is effectively required knowledge in any DevSecOps or API-first context — OpenAPI 3.x uses it natively, Kubernetes uses it for CRD validation, and most linting/validation tools in the CI pipeline speak it. The spec is stable (Draft 2020-12) and tooling support is broad across all major languages. Adopt without reservation anywhere you need to validate or document a JSON structure.