{
  "$id": "openapi-external-documentation.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "OpenAPI External Documentation Object",
  "description": "Allows referencing an external resource for extended documentation.",
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "description": {
      "type": "string",
      "description": "A description of the target documentation."
    },
    "url": {
      "type": "string",
      "format": "uri",
      "description": "The URL for the target documentation."
    }
  },
  "patternProperties": {
    "^x-": {}
  },
  "additionalProperties": false
}