ActivityPub Unofficial JSON Schema

Activity

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

  "allOf": [
    { "$ref": "Object.json#" },
    {
      "type": "object",
      "properties": {
        "actor": { "$ref": "#/definitions/actor" },
        "object": { "$ref": "#/definitions/object" },
        "target": { "$ref": "#/definitions/target" },
        "result": { "$ref": "#/definitions/result" },
        "origin": { "$ref": "#/definitions/origin" },
        "instrument": { "$ref": "#/definitions/instrument" }
      }
    }
  ],

  "definitions": {
    "actor": {
      "description": "Describes one or more entities that either performed or are expected to perform the activity.",
      "allOf": [{ "$ref": "Object.json#/definitions/possibleRefArray" }]
    },
    "object": {
      "description": "Describes the direct object of the activity. E.g. if 'foo adds a movie' it means the movie added.",
      "allOf": [{ "$ref": "Object.json#/definitions/possibleRefArray" }]
    },
    "target": {
      "description": "Describes the indirect object, or target, of the activity. E.g. where to was it added.",
      "allOf": [{ "$ref": "Object.json#/definitions/possibleRefArray" }]
    },
    "result": {
      "description": "Describes the result of the activity.",
      "allOf": [{ "$ref": "Object.json#/definitions/possibleRefArray" }]
    },
    "origin": {
      "description": "Describes an indirect object of the activity from which the activity is directed.",
      "allOf": [{ "$ref": "Object.json#/definitions/possibleRefArray" }]
    },
    "instrument": {
      "description": "Identifies one or more objects used (or to be used) in the completion of an Activity.",
      "allOf": [{ "$ref": "Object.json#/definitions/possibleRefArray" }]
    },

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

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