itemcollection.json

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "itemcollection.json#",
  "title": "STAC ItemCollection",
  "type": "object",
  "description": "This object represents the metadata for a set of items in a SpatioTemporal Asset Catalog.",
  "additionalProperties": true,
  "allOf": [
    {
      "$ref": "#/definitions/core"
    }
  ],
  "definitions": {
    "core": {
      "allOf": [
        {
          "oneOf": [
            {
              "$ref": "https://geojson.org/schema/FeatureCollection.json"
            }
          ]
        },
        {
          "type": "object",
          "required": [
            "type",
            "features"
          ],
          "properties": {
            "stac_version": {
              "title": "STAC version",
              "type": "string",
              "const": "0.9.0"
            },
            "stac_extensions": {
              "title": "STAC extensions",
              "type": "array",
              "uniqueItems": true,
              "items": {
                "anyOf": [
                  {
                    "title": "Reference to a JSON Schema",
                    "type": "string",
                    "format": "uri"
                  },
                  {
                    "title": "Reference to a core extension",
                    "type": "string",
                    "enum": [
                      "single-file-stac"
                    ]
                  }
                ]
              }
            },
            "type": {
              "title": "Type",
              "description": "Type of entity, always FeatureCollection",
              "type": "string"
            },
            "features": {
              "title": "ItemCollection features",
              "description": "Items in this item collection",
              "type": "array",
              "items": {
                "$ref": "item.json"
              }
            },
            "links": {
              "title": "Links",
              "description": "Links to item collection relations",
              "type": "array",
              "items": {
                "$ref": "item.json#/definitions/link"
              }
            }
          }
        }
      ]
    }
  }
}