ActivityPub Unofficial JSON Schema

Link

{
  "$id": "http://www.w3.org/ns/activitystreams/Link.json",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Link",
  "description": "https://www.w3.org/TR/activitystreams-vocabulary/#dfn-link",

  "allOf": [
    { "$ref": "JSONLD.json#" },
    {
      "type": "object",
      "required": ["href", "type"],
      "properties": {
        "@context": { "default": "https://www.w3.org/ns/activitystreams" },
        "type": { "$ref": "Object.json#/definitions/type" },
        "mediaType": {
          "description": "Identifies the MIME media type of the referenced resource.",
          "allOf": [{"$ref": "Object.json#/definitions/mediaType"}]
        },
        "href": { "$ref": "#/definitions/href" },
        "hreflang": { "$ref": "#/definitions/hreflang" },
        "rel": { "$ref": "#/definitions/rel" },
        "name": { "$ref": "#/definitions/name" },
        "nameMap": { "$ref": "#/definitions/nameMap" },
        "preview": { "$ref": "#/definitions/preview" },
        "height": { "$ref": "#/definitions/height" },
        "width": { "$ref": "#/definitions/width" }
      },
      "$comment": "TODO https://github.com/w3c/activitystreams/issues/443 for nameMap",
      "not": { "required": ["name", "nameMap"] }
    }
  ],

  "definitions": {
    "href": {
      "description": "The target resource pointed to.",
      "type": "string",
      "format": "uri"
    },
    "hreflang": {
      "description": "Hints as to the language used by the target resource. Value must be a [BCP47] Language-Tag.",
      "type": "string",
      "pattern": "^(?:(en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE)|(art-lojban|cel-gaulish|no-bok|no-nyn|zh-guoyu|zh-hakka|zh-min|zh-min-nan|zh-xiang))$|^((?:[a-z]{2,3}(?:(?:-[a-z]{3}){1,3})?)|[a-z]{4}|[a-z]{5,8})(?:-([a-z]{4}))?(?:-([a-z]{2}|\\d{3}))?((?:-(?:[\\da-z]{5,8}|\\d[\\da-z]{3}))*)?((?:-[\\da-wy-z](?:-[\\da-z]{2,8})+)*)?(-x(?:-[\\da-z]{1,8})+)?$|^(x(?:-[\\da-z]{1,8})+)$"
    },
    "rel": {
      "description": "A link relation associated with a Link. Must conform to both [HTML5] and [RFC5988] 'link relation'.",
      "type": "string",
      "pattern": "^[^\\u0020\\u0009\\u000A\\u000C\\u000D\\u002C]+$"
    },
    "name": {
      "description": "A simple, human-readable plain-text name for the link object.",
      "allOf": [{"$ref": "Object.json#/definitions/name"}]
    },
    "nameMap": {
      "description": "Multiple language tagged representations of a simple, human-readable plain-text name for the link object.",
      "allOf": [{"$ref": "Object.json#/definitions/nameMap"}]
    },
    "preview": {
      "description": "Identifies an entity that provides a preview of this object.",
      "allOf": [{"$ref": "Object.json#/definitions/possibleRefArray"}]
    },
    "height": {
      "description": "Specifies a hint as to the rendering height in device-independent pixels of the linked resource.",
      "type": "integer",
      "minimum": 0
    },
    "width": {
      "description": "Specifies a hint as to the rendering width in device-independent pixels of the linked resource.",
      "type": "integer",
      "minimum": 0
    },

    "possibleType": {
      "enum": [
        "Link",
        "http://www.w3.org/ns/activitystreams#Link",
        "https://www.w3.org/ns/activitystreams#Link"
      ]
    },
    "byTypeRef": {
      "properties": {
        "type": {
          "oneOf": [
            { "$ref": "#/definitions/possibleType" },
            { "type": "array", "contains": { "$ref": "#/definitions/possibleType" } }
          ]
        }
      }
    },
    "possibleRef": {
			"oneOf": [
				{ "$ref": "#" },
				{
					"type": "string",
					"format": "uri",
					"links": [{
						"rel": "full",
						"href": "{+$}"
					}]
				}
			]
		},
    "possibleRefArray": {
      "oneOf": [
        { "$ref": "#/definitions/possibleRef" },
        {
          "type": "array",
          "items": { "$ref": "#/definitions/possibleRef" }
        }
      ]
    }
  }
}

---

View source