{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "additionalProperties": false,
    "required": [
        "version",
        "user_comment",
        "title",
        "home_page_url",
        "feed_url",
        "author",
        "items"
    ],
    "properties": {
        "version": {
            "type": "string",
            "format": "uri"
        },
        "user_comment": {
            "type": "string",
            "contentMediaType": "text/plain"
        },
        "title": {
            "type": "string",
            "contentMediaType": "text/plain"
        },
        "home_page_url": {
            "type": "string",
            "format": "uri"
        },
        "feed_url": {
            "type": "string",
            "format": "uri"
        },
        "author": {
            "type": "object",
            "additionalProperties": false,
            "required": ["name", "url", "avatar"],
            "properties": {
                "name": { "type": "string" },
                "url": {
                    "type": "string",
                    "format": "uri"
                },
                "avatar": {
                    "type": "string",
                    "format": "uri"
                }
            }
        },
        "items": {
            "type": "array",
            "items": {
                "type": "object",
                "additionalProperties": false,
                "required": ["id", "url", "content_text", "date_published"],
                "properties": {
                    "id": { "type": "string" },
                    "url": {
                        "type": "string",
                        "format": "uri"
                    },
                    "content_text": {
                        "type": "string",
                        "contentMediaType": "text/plain"
                    },
                    "date_published": {
                        "type": "string",
                        "format": "date-time"
                    }
                }
            }
        }
    }
}