Validate JSON by JSON Schema Action

A GitHub Action that automatically validates JSON files using their $schema reference. The action extracts the schema URL from the JSON file, downloads it, migrates it to the latest version, and validates the JSON against the schema.

Usage

- name: Validate JSON file
  uses: your-username/validate-json-by-json-schema-action@v1
  with:
    json-file: "path/to/your/file.json"

Inputs

Input	Description	Required	Default
json-file	The JSON file to validate	Yes	-

How it works

1. Extracts the $schema URL from the specified JSON file
2. Downloads the schema from the URL
3. Migrates the schema to the latest version using ajv-cli
4. Validates the JSON file against the schema
5. Exits successfully if validation passes, fails if validation fails

Requirements

• The JSON file must contain a $schema property with a valid URL
• The schema URL must be accessible via HTTP/HTTPS
• The action uses ajv-cli for validation with --strict=false mode