# 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.

Agent View of the PolicyLayer registry record for `list_instance_attached_disks`. HTML page: https://policylayer.com/tools/com-googleapis-compute-mcp/list-instance-attached-disks

## Facts

- Tool: `list_instance_attached_disks`
- Server: Mcp (`https://compute.googleapis.com/mcp`) — https://policylayer.com/tools/com-googleapis-compute-mcp.md
- Homepage: https://github.com/https://compute.googleapis.com/mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 3 (3 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `name` | string | yes | Required. Identifier. The instance name. |
| `zone` | string | yes | Required. The zone of the instance. |
| `project` | string | yes | Required. Project ID for this request. |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "list_instance_attached_disks",
    "arguments": {
      "name": "<name>",
      "zone": "<zone>",
      "project": "<project>"
    }
  }
}
```

## Why list_instance_attached_disks is rated Low

This tool performs a read-only query of infrastructure metadata. It retrieves and lists configuration details about attached disks but does not modify, delete, execute, or create any resources. The blast radius of misuse is minimal—an agent with this tool can only view disk information it already has authorization to access. Appropriate for Read category with low severity.

From the tool's own definition: "The tool 'Lists the disks attached to a Compute Engine virtual machine' and returns details such as 'kind, type, mode, saved state, source, device name, index, boot, initialize parameters, auto delete, licenses, interface, guest OS features, disk encryption…"

## Use case

AI agents call list_instance_attached_disks to retrieve information from Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mcp:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_instance_attached_disks": {}
  }
}
```

## Other tools on Mcp (28)

- `delete_instance` — Destructive — https://policylayer.com/tools/com-googleapis-compute-mcp/delete-instance.md
- `reset_instance` — Execute — https://policylayer.com/tools/com-googleapis-compute-mcp/reset-instance.md
- `start_instance` — Execute — https://policylayer.com/tools/com-googleapis-compute-mcp/start-instance.md
- `stop_instance` — Execute — https://policylayer.com/tools/com-googleapis-compute-mcp/stop-instance.md
- `get_commitment_basic_info` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-commitment-basic-info.md
- `get_disk_basic_info` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-disk-basic-info.md
- `get_disk_performance_config` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-disk-performance-config.md
- `get_instance_basic_info` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-instance-basic-info.md
- `get_instance_group_manager_basic_info` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-instance-group-manager-basic-info.md
- `get_instance_template_basic_info` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-instance-template-basic-info.md
- `get_instance_template_properties` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-instance-template-properties.md
- `get_reservation_basic_info` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-reservation-basic-info.md
- `get_reservation_details` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-reservation-details.md
- `get_zone_operation` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/get-zone-operation.md
- `list_accelerator_types` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-accelerator-types.md
- `list_commitment_reservations` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-commitment-reservations.md
- `list_commitments` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-commitments.md
- `list_disks` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-disks.md
- `list_images` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-images.md
- `list_instance_group_managers` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-instance-group-managers.md
- `list_instance_templates` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-instance-templates.md
- `list_instances` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-instances.md
- `list_machine_types` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-machine-types.md
- `list_managed_instances` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-managed-instances.md
- `list_reservations` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-reservations.md
- `list_snapshots` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-snapshots.md
- `create_instance` — Write — https://policylayer.com/tools/com-googleapis-compute-mcp/create-instance.md
- `set_instance_machine_type` — Write — https://policylayer.com/tools/com-googleapis-compute-mcp/set-instance-machine-type.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=com-googleapis-compute-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-googleapis-compute-mcp