{
  "$id": "https://spec.openapis.org/overlay/1.0/schema/2024-10-22",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "description": "The description of Overlay v1.0.x documents",
  "type": "object",
  "properties": {
    "overlay": {
      "type": "string",
      "pattern": "^1\\.0\\.\\d+$"
    },
    "info": {
      "$ref": "#/$defs/info-object"
    },
    "extends": {
      "type": "string",
      "format": "uri-reference"
    },
    "actions": {
      "type": "array",
      "minItems": 1,
      "uniqueItems": true,
      "items": {
        "$ref": "#/$defs/action-object"
      }
    }
  },
  "required": [
    "overlay",
    "info",
    "actions"
  ],
  "$ref": "#/$defs/specification-extensions",
  "unevaluatedProperties": false,
  "$defs": {
    "info-object": {
      "type": "object",
      "properties": {
        "title": {
          "type": "string"
        },
        "version": {
          "type": "string"
        }
      },
      "required": [
        "title",
        "version"
      ],
      "$ref": "#/$defs/specification-extensions",
      "unevaluatedProperties": false
    },
    "action-object": {
      "properties": {
        "target": {
          "type": "string",
          "pattern": "^\\$"
        },
        "description": {
          "type": "string"
        },
        "update": {
          "type": [
            "string",
            "boolean",
            "object",
            "array",
            "number",
            "null"
          ]
        },
        "remove": {
          "type": "boolean",
          "default": false
        }
      },
      "required": [
        "target"
      ],
      "$ref": "#/$defs/specification-extensions",
      "unevaluatedProperties": false
    },
    "specification-extensions": {
      "patternProperties": {
        "^x-": true
      }
    }
  }
}