MCP Tools Reference: compute.googleapis.com

Tool: list_instance_attached_disks

Lists the disks attached to a Compute Engine virtual machine (VM) instance. For each attached disk, the response includes details such as kind, type, mode, saved state, source, device name, index, boot, initialize parameters, auto delete, licenses,, interface, guest OS features, disk encryption key, disk size, shielded instance initial state, force attach, and architecture. Requires project, zone, and instance name as input.

The following sample demonstrate how to use curl to invoke the list_instance_attached_disks MCP tool.

Curl Request 
curl --location 'https://compute.googleapis.com/mcp' \
--header 'content-type: application/json' \
--header 'accept: application/json, text/event-stream' \
--data '{
  "method": "tools/call",
  "params": {
    "name": "list_instance_attached_disks",
    "arguments": {
      // provide these details according to the tool's MCP specification
    }
  },
  "jsonrpc": "2.0",
  "id": 1
}'

Input Schema

Request message for listing instance attached disks.

JSON representation 
{
  "project": string,
  "zone": string,
  "name": string
}
Fields
project

string

Required. Project ID for this request.
zone

string

Required. The zone of the instance.
name

string

Required. Identifier. The instance name.

Output Schema

Response message for listing instance attached disks.

JSON representation 
{
  "attachedDisks": [
    {
      object (AttachedDisk)
    }
  ]
}
Fields
attachedDisks[]

object (AttachedDisk)

The list of attached disks.
JSON representation 
{
  "kind": string,
  "type": enum (DiskType),
  "mode": enum (DiskMode),
  "savedState": enum (DiskSavedState),
  "source": string,
  "deviceName": string,
  "index": integer,
  "boot": boolean,
  "initializeParams": {
    object (InitializeParams)
  },
  "autoDelete": boolean,
  "licenses": [
    string
  ],
  "interface": enum (DiskInterface),
  "guestOsFeatures": [
    {
      object (GuestOsFeature)
    }
  ],
  "diskEncryptionKey": {
    object (CustomerEncryptionKey)
  },
  "diskSizeGb": string,
  "shieldedInstanceInitialState": {
    object (InitialStateConfig)
  },
  "initializeParamsAlts": [
    {
      object (InitializeParams)
    }
  ],
  "forceAttach": boolean,
  "architecture": enum (Architecture)
}
Fields
kind

string

Output only. [Output Only] Type of the resource. Always compute#attachedDisk for attached disks.
type

enum (DiskType)

Specifies the type of the disk, either SCRATCH or PERSISTENT. If not specified, the default is PERSISTENT.
mode

enum (DiskMode)

The mode in which to attach this disk, either READ_WRITE or READ_ONLY. If not specified, the default is to attach the disk in READ_WRITE mode.
savedState

enum (DiskSavedState)

Output only. For LocalSSD disks on VM Instances in STOPPED or SUSPENDED state, this field is set to PRESERVED if the LocalSSD data has been saved to a persistent location by customer request. (see the discard_local_ssd option on Stop/Suspend). Read-only in the api.
source

string

Specifies a valid partial or full URL to an existing Persistent Disk resource. When creating a new instance boot disk, one of initializeParams.sourceImage or initializeParams.sourceSnapshot or disks.source is required.

If desired, you can also attach existing non-root persistent disks using this property. This field is only applicable for persistent disks.

Note that for InstanceTemplate, specify the disk name for zonal disk, and the URL for regional disk.
deviceName

string

Specifies a unique device name of your choice that is reflected into the /dev/disk/by-id/google-* tree of a Linux operating system running within the instance. This name can be used to reference the device for mounting, resizing, and so on, from within the instance.

If not specified, the server chooses a default device name to apply to this disk, in the form persistent-disk-x, where x is a number assigned by Google Compute Engine. This field is only applicable for persistent disks.
index

integer

Output only. [Output Only] A zero-based index to this disk, where 0 is reserved for the boot disk. If you have many disks attached to an instance, each disk would have a unique index number.
boot

boolean

Indicates that this is a boot disk. The virtual machine will use the first partition of the disk for its root filesystem.
initializeParams

object (InitializeParams)

[Input Only] Specifies the parameters for a new disk that will be created alongside the new instance. Use initialization parameters to create boot disks or local SSDs attached to the new instance.

This property is mutually exclusive with the source property; you can only define one or the other, but not both.
autoDelete

boolean

Specifies whether the disk will be auto-deleted when the instance is deleted (but not when the disk is detached from the instance).
licenses[]

string

Output only. [Output Only] Any valid publicly visible licenses.
interface

enum (DiskInterface)

Specifies the disk interface to use for attaching this disk, which is either SCSI or NVME. For most machine types, the default is SCSI. Local SSDs can use either NVME or SCSI. In certain configurations, persistent disks can use NVMe. For more information, see About persistent disks.
guestOsFeatures[]

object (GuestOsFeature)

A list of features to enable on the guest operating system. Applicable only for bootable images. Read Enabling guest operating system features to see a list of available options.
diskEncryptionKey

object (CustomerEncryptionKey)

Encrypts or decrypts a disk using a customer-supplied encryption key.

If you are creating a new disk, this field encrypts the new disk using an encryption key that you provide. If you are attaching an existing disk that is already encrypted, this field decrypts the disk using the customer-supplied encryption key.

If you encrypt a disk using a customer-supplied key, you must provide the same key again when you attempt to use this resource at a later time. For example, you must provide the key when you create a snapshot or an image from the disk or when you attach the disk to a virtual machine instance.

If you do not provide an encryption key, then the disk will be encrypted using an automatically generated key and you do not need to provide a key to use the disk later.

Note:

Instance templates do not store customer-supplied encryption keys, so you cannot use your own keys to encrypt disks in a managed instance group.

You cannot create VMs that have disks with customer-supplied keys using the bulk insert method.
diskSizeGb

string (int64 format)

The size of the disk in GB.
shieldedInstanceInitialState

object (InitialStateConfig)

Output only. [Output Only] shielded vm initial state stored on disk
initializeParamsAlts[]
(deprecated)

object (InitializeParams)
forceAttach

boolean

[Input Only] Whether to force attach the regional disk even if it's currently attached to another instance. If you try to force attach a zonal disk to an instance, you will receive an error.
architecture

enum (Architecture)

Output only. [Output Only] The architecture of the attached disk. Valid values are ARM64 or X86_64.
JSON representation 
{
  "diskName": string,
  "sourceImage": string,
  "diskSizeGb": string,
  "diskType": string,
  "sourceImageEncryptionKey": {
    object (CustomerEncryptionKey)
  },
  "labels": {
    string: string,
    ...
  },
  "sourceSnapshot": string,
  "sourceSnapshotEncryptionKey": {
    object (CustomerEncryptionKey)
  },
  "description": string,
  "replicaZones": [
    string
  ],
  "resourcePolicies": [
    string
  ],
  "onUpdateAction": enum (OnUpdateAction),
  "provisionedIops": string,
  "diskSizeGbAlts": [
    string
  ],
  "diskTypeAlts": [
    string
  ],
  "licenses": [
    string
  ],
  "architecture": enum (Architecture),
  "resourceManagerTags": {
    string: string,
    ...
  },
  "provisionedThroughput": string,
  "enableConfidentialCompute": boolean,
  "storagePool": string
}
Fields
diskName

string

Specifies the disk name. If not specified, the default is to use the name of the instance. If a disk with the same name already exists in the given region, the existing disk is attached to the new instance and the new disk is not created.
sourceImage

string

The source image to create this disk. When creating a new instance boot disk, one of initializeParams.sourceImage or initializeParams.sourceSnapshot or disks.source is required.

To create a disk with one of the public operating system images, specify the image by its family name. For example, specify family/debian-9 to use the latest Debian 9 image:

projects/debian-cloud/global/images/family/debian-9

Alternatively, use a specific version of a public operating system image:

projects/debian-cloud/global/images/debian-9-stretch-vYYYYMMDD

To create a disk with a custom image that you created, specify the image name in the following format:

global/images/my-custom-image

You can also specify a custom image by its image family, which returns the latest version of the image in that family. Replace the image name with family/family-name:

global/images/family/my-image-family

If the source image is deleted later, this field will not be set.
diskSizeGb

string (int64 format)

Specifies the size of the disk in base-2 GB. The size must be at least 10 GB. If you specify a sourceImage, which is required for boot disks, the default size is the size of the sourceImage. If you do not specify a sourceImage, the default disk size is 500 GB.
diskType

string

Specifies the disk type to use to create the instance. If not specified, the default is pd-standard, specified using the full URL. For example:

https://www.googleapis.com/compute/v1/projects/project/zones/zone/diskTypes/pd-standard

For a full list of acceptable values, see Persistent disk types. If you specify this field when creating a VM, you can provide either the full or partial URL. For example, the following values are valid:

If you specify this field when creating or updating an instance template or all-instances configuration, specify the type of the disk, not the URL. For example: pd-standard.
sourceImageEncryptionKey

object (CustomerEncryptionKey)

The customer-supplied encryption key of the source image. Required if the source image is protected by a customer-supplied encryption key.

InstanceTemplate and InstancePropertiesPatch do not store customer-supplied encryption keys, so you cannot create disks for instances in a managed instance group if the source images are encrypted with your own keys.
labels

map (key: string, value: string)

Labels to apply to this disk. These can be later modified by the disks.setLabels method. This field is only applicable for persistent disks.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
sourceSnapshot

string

The source snapshot to create this disk. When creating a new instance boot disk, one of initializeParams.sourceSnapshot or initializeParams.sourceImage or disks.source is required.

To create a disk with a snapshot that you created, specify the snapshot name in the following format:

global/snapshots/my-backup

If the source snapshot is deleted later, this field will not be set.

Note: You cannot create VMs in bulk using a snapshot as the source. Use an image instead when you create VMs using the bulk insert method.
sourceSnapshotEncryptionKey

object (CustomerEncryptionKey)

The customer-supplied encryption key of the source snapshot.
description

string

An optional description. Provide this property when creating the disk.
replicaZones[]

string

Required for each regional disk associated with the instance. Specify the URLs of the zones where the disk should be replicated to. You must provide exactly two replica zones, and one zone must be the same as the instance zone.
resourcePolicies[]

string

Resource policies applied to this disk for automatic snapshot creations. Specified using the full or partial URL. For instance template, specify only the resource policy name.
onUpdateAction

enum (OnUpdateAction)

Specifies which action to take on instance update with this disk. Default is to use the existing disk.
provisionedIops

string (int64 format)

Indicates how many IOPS to provision for the disk. This sets the number of I/O operations per second that the disk can handle. Values must be between 10,000 and 120,000. For more details, see the Extreme persistent disk documentation.
diskSizeGbAlts[]
(deprecated)

string (int64 format)
diskTypeAlts[]
(deprecated)

string
licenses[]

string

A list of publicly visible licenses. Reserved for Google's use.
architecture

enum (Architecture)

The architecture of the attached disk. Valid values are arm64 or x86_64.
resourceManagerTags

map (key: string, value: string)

Resource manager tags to be bound to the disk. Tag keys and values have the same definition as resource manager tags. Keys and values can be either in numeric format, such as tagKeys/{tag_key_id} and tagValues/456 or in namespaced format such as {org_id|project_id}/{tag_key_short_name} and {tag_value_short_name}. The field is ignored (both PUT & PATCH) when empty.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
provisionedThroughput

string (int64 format)

Indicates how much throughput to provision for the disk. This sets the number of throughput mb per second that the disk can handle. Values must greater than or equal to 1.
enableConfidentialCompute

boolean

Whether this disk is using confidential compute mode.
storagePool

string

The storage pool in which the new disk is created. You can provide this as a partial or full URL to the resource. For example, the following are valid values:

JSON representation 
{
  "sha256": string,
  "kmsKeyServiceAccount": string,

  // Union field key can be only one of the following:
  "rawKey": string,
  "rsaEncryptedKey": string,
  "kmsKeyName": string
  // End of list of possible types for union field key.
}
Fields
sha256

string

[Output only] The RFC 4648 base64 encoded SHA-256 hash of the customer-supplied encryption key that protects this resource.
kmsKeyServiceAccount

string

The service account being used for the encryption request for the given KMS key. If absent, the Compute Engine default service account is used. For example: 

"kmsKeyServiceAccount": "name@ project_id.iam.gserviceaccount.com/

Union field key.

key can be only one of the following:
rawKey

string

Specifies a 256-bit customer-supplied encryption key, encoded in RFC 4648 base64 to either encrypt or decrypt this resource. You can provide either the rawKey or the rsaEncryptedKey. For example: 

"rawKey": "SGVsbG8gZnJvbSBHb29nbGUgQ2xvdWQgUGxhdGZvcm0="

rsaEncryptedKey

string

Specifies an RFC 4648 base64 encoded, RSA-wrapped 2048-bit customer-supplied encryption key to either encrypt or decrypt this resource. You can provide either the rawKey or the rsaEncryptedKey. For example: 

"rsaEncryptedKey": "ieCx/NcW06PcT7Ep1X6LUTc/hLvUDYyzSZPPVCVPTVEohpeHASqC8uw5TzyO9U+Fka9JFH z0mBibXUInrC/jEk014kCK/NPjYgEMOyssZ4ZINPKxlUh2zn1bV+MCaTICrdmuSBTWlUUiFoD D6PYznLwh8ZNdaheCeZ8ewEXgFQ8V+sDroLaN3Xs3MDTXQEMMoNUXMCZEIpg9Vtp9x2oe=="
The key must meet the following requirements before you can provide it to Compute Engine:
  1. The key is wrapped using a RSA public key certificate provided by Google.
  2. After being wrapped, the key must be encoded in RFC 4648 base64 encoding.
Gets the RSA public key certificate provided by Google at: 
 https://cloud-certs.storage.googleapis.com/google-cloud-csek-ingress.pem
kmsKeyName

string

The name of the encryption key that is stored in Google Cloud KMS. For example: 

"kmsKeyName": "projects/ kms_project_id/locations/ region/keyRings/ key_region/cryptoKeys/key
The fully-qualifed key name may be returned for resource GET requests. For example: 
"kmsKeyName": "projects/ kms_project_id/locations/ region/keyRings/ key_region/cryptoKeys/key /cryptoKeyVersions/1
JSON representation 
{
  "key": string,
  "value": string
}
Fields
key

string
value

string
JSON representation 
{
  "key": string,
  "value": string
}
Fields
key

string
value

string
JSON representation 
{
  "type": enum (FeatureType),
  "typeAlts": [
    enum (FeatureType)
  ]
}
Fields
type

enum (FeatureType)

The ID of a supported feature. To add multiple values, use commas to separate values. Set to one or more of the following values:

  • VIRTIO_SCSI_MULTIQUEUE
  • WINDOWS
  • MULTI_IP_SUBNET
  • UEFI_COMPATIBLE
  • GVNIC
  • SEV_CAPABLE
  • SUSPEND_RESUME_COMPATIBLE
  • SEV_LIVE_MIGRATABLE_V2
  • SEV_SNP_CAPABLE
  • TDX_CAPABLE
  • IDPF
  • SNP_SVSM_CAPABLE
For more information, see Enabling guest operating system features.
typeAlts[]
(deprecated)

enum (FeatureType)
JSON representation 
{
  "pk": {
    object (FileContentBuffer)
  },
  "keks": [
    {
      object (FileContentBuffer)
    }
  ],
  "dbs": [
    {
      object (FileContentBuffer)
    }
  ],
  "dbxs": [
    {
      object (FileContentBuffer)
    }
  ]
}
Fields
pk

object (FileContentBuffer)

The Platform Key (PK).
keks[]

object (FileContentBuffer)

The Key Exchange Key (KEK).
dbs[]

object (FileContentBuffer)

The Key Database (db).
dbxs[]

object (FileContentBuffer)

The forbidden key database (dbx).
JSON representation 
{
  "content": string,
  "fileType": enum (FileType)
}
Fields
content

string (bytes format)

The raw content in the secure keys file.

A base64-encoded string.
fileType

enum (FileType)

The file type of source file.

Tool Annotations

Destructive Hint: ❌ | Idempotent Hint: ✅ | Read Only Hint: ✅ | Open World Hint: ❌