{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api.linode.com/schemas/linode/instance.json",
  "title": "Linode Instance",
  "description": "A Linode compute instance representing a virtual machine running on the Akamai Connected Cloud platform. Instances have configurable CPU, memory, storage, and networking resources and can be deployed from distribution images or custom images.",
  "type": "object",
  "required": ["id", "label", "region", "type", "status"],
  "properties": {
    "id": {
      "type": "integer",
      "description": "The unique identifier for this Linode instance."
    },
    "label": {
      "type": "string",
      "minLength": 3,
      "maxLength": 64,
      "pattern": "^[a-zA-Z]((?!--|__)[a-zA-Z0-9-_])+$",
      "description": "The display label for this Linode instance. Must begin with a letter and may only contain letters, numbers, dashes, and underscores."
    },
    "region": {
      "type": "string",
      "description": "The region identifier where this Linode instance is deployed, such as us-east or eu-west."
    },
    "type": {
      "type": "string",
      "description": "The Linode plan type identifier that determines the instance's hardware resources and pricing."
    },
    "image": {
      "type": ["string", "null"],
      "description": "The image identifier used to deploy this Linode instance, or null if deployed from a backup."
    },
    "status": {
      "type": "string",
      "enum": [
        "running",
        "offline",
        "booting",
        "rebooting",
        "shutting_down",
        "provisioning",
        "deleting",
        "migrating",
        "rebuilding",
        "cloning",
        "restoring",
        "stopped"
      ],
      "description": "The current operational status of the Linode instance."
    },
    "ipv4": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "ipv4"
      },
      "description": "The IPv4 addresses assigned to this Linode instance."
    },
    "ipv6": {
      "type": ["string", "null"],
      "description": "The IPv6 SLAAC address for this Linode instance."
    },
    "created": {
      "type": "string",
      "format": "date-time",
      "description": "The date and time when this Linode instance was created."
    },
    "updated": {
      "type": "string",
      "format": "date-time",
      "description": "The date and time when this Linode instance was last updated."
    },
    "tags": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "User-defined tags applied to this Linode instance for organizational purposes."
    },
    "hypervisor": {
      "type": "string",
      "description": "The virtualization hypervisor this Linode instance runs on."
    },
    "watchdog_enabled": {
      "type": "boolean",
      "description": "Whether the Lassie watchdog is enabled to automatically restart this instance if it powers off unexpectedly."
    },
    "specs": {
      "$ref": "#/$defs/InstanceSpecs"
    },
    "alerts": {
      "$ref": "#/$defs/InstanceAlerts"
    },
    "backups": {
      "$ref": "#/$defs/BackupInfo"
    }
  },
  "$defs": {
    "InstanceSpecs": {
      "type": "object",
      "description": "The hardware specifications for this Linode instance based on its plan type.",
      "properties": {
        "disk": {
          "type": "integer",
          "description": "The total disk space in megabytes."
        },
        "memory": {
          "type": "integer",
          "description": "The total RAM in megabytes."
        },
        "vcpus": {
          "type": "integer",
          "minimum": 1,
          "description": "The number of virtual CPU cores."
        },
        "gpus": {
          "type": "integer",
          "minimum": 0,
          "description": "The number of GPUs, if applicable."
        },
        "transfer": {
          "type": "integer",
          "description": "The monthly network transfer quota in gigabytes."
        }
      }
    },
    "InstanceAlerts": {
      "type": "object",
      "description": "Alert thresholds for monitoring this Linode instance.",
      "properties": {
        "cpu": {
          "type": "integer",
          "minimum": 0,
          "description": "The CPU usage percentage threshold for alerts."
        },
        "io": {
          "type": "integer",
          "minimum": 0,
          "description": "The disk IO rate threshold for alerts."
        },
        "network_in": {
          "type": "integer",
          "minimum": 0,
          "description": "The incoming network traffic threshold in Mb/s for alerts."
        },
        "network_out": {
          "type": "integer",
          "minimum": 0,
          "description": "The outgoing network traffic threshold in Mb/s for alerts."
        },
        "transfer_quota": {
          "type": "integer",
          "minimum": 0,
          "maximum": 100,
          "description": "The transfer quota usage percentage threshold for alerts."
        }
      }
    },
    "BackupInfo": {
      "type": "object",
      "description": "Information about the backup service for this Linode instance.",
      "properties": {
        "enabled": {
          "type": "boolean",
          "description": "Whether the backup service is enabled for this instance."
        },
        "available": {
          "type": "boolean",
          "description": "Whether any backups are currently available for restoration."
        },
        "schedule": {
          "type": "object",
          "properties": {
            "day": {
              "type": ["string", "null"],
              "description": "The day of the week for weekly automatic backups."
            },
            "window": {
              "type": ["string", "null"],
              "description": "The two-hour UTC window for daily automatic backups."
            }
          },
          "description": "The schedule for automatic backups."
        }
      }
    }
  }
}