RSS 2.0 Item

{
  "$id": "rss-item-schema.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "RSS 2.0 Item",
  "description": "Schema describing an <item> element inside an RSS 2.0 channel. All sub-elements are optional, but at least one of title or description must be present.",
  "type": "object",
  "anyOf": [
    {
      "required": [
        "title"
      ]
    },
    {
      "required": [
        "description"
      ]
    }
  ],
  "properties": {
    "title": {
      "type": "string",
      "description": "Title of the item."
    },
    "link": {
      "type": "string",
      "format": "uri",
      "description": "URL of the item — typically the permalink to the corresponding HTML page."
    },
    "description": {
      "type": "string",
      "description": "Synopsis of the item. May contain HTML markup, typically escaped or in a CDATA section."
    },
    "author": {
      "type": "string",
      "description": "Email address of the author of the item, optionally followed by a name in parentheses."
    },
    "category": {
      "type": "array",
      "description": "Categories this item belongs to, optionally tagged with a taxonomy domain.",
      "items": {
        "type": "object",
        "required": [
          "value"
        ],
        "properties": {
          "value": {
            "type": "string"
          },
          "domain": {
            "type": "string"
          }
        }
      }
    },
    "comments": {
      "type": "string",
      "format": "uri",
      "description": "URL of a page for comments relating to the item."
    },
    "enclosure": {
      "type": "object",
      "description": "Media object — most often used to attach podcast audio or video to the item. For maximum interoperability, the RSS Best Practices Profile recommends no more than one enclosure per item.",
      "required": [
        "url",
        "length",
        "type"
      ],
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "URL where the enclosure is located."
        },
        "length": {
          "type": "integer",
          "minimum": 0,
          "description": "Size of the enclosure in bytes."
        },
        "type": {
          "type": "string",
          "description": "MIME type of the enclosure (e.g., audio/mpeg, video/mp4).",
          "examples": [
            "audio/mpeg"
          ]
        }
      }
    },
    "guid": {
      "type": "object",
      "description": "Globally unique identifier for the item. When isPermaLink is true (default), the value MUST be a resolvable URL. Best practice is to provide a stable, opaque identifier and set isPermaLink=false when the value is not a URL (e.g., a tag: URI).",
      "required": [
        "value"
      ],
      "properties": {
        "value": {
          "type": "string"
        },
        "isPermaLink": {
          "type": "boolean",
          "default": true
        }
      }
    },
    "pubDate": {
      "type": "string",
      "description": "Indicates when the item was published, formatted per RFC 822. Items should not be published with future-dated pubDate as embargo, since aggregators do not honor this."
    },
    "source": {
      "type": "object",
      "description": "RSS channel that the item came from when republished from another feed.",
      "required": [
        "url",
        "value"
      ],
      "properties": {
        "url": {
          "type": "string",
          "format": "uri"
        },
        "value": {
          "type": "string"
        }
      }
    }
  },
  "additionalProperties": true
}