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

Extracts the $schema URL from the specified JSON file
Downloads the schema from the URL
Migrates the schema to the latest version using ajv-cli
Validates the JSON file against the schema
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