# list_disks

Lists Compute Engine disks. Details for each disk include name, ID, description, creation timestamp, size, type, status, last attach timestamp, and last detach timestamp. Requires project and zone as input.

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

## Facts

- Tool: `list_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: 4 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `zone` | string | yes | Required. The zone of the disks to list. |
| `project` | string | yes | Required. Project ID for this request. |
| `pageSize` | integer | no | Optional. The maximum number of results per page that should be returned. |
| `pageToken` | string | no | Optional. The page token received from the previous call. |

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_disks",
    "arguments": {
      "zone": "<zone>",
      "project": "<project>"
    }
  }
}
```

## Why list_disks is rated Low

The tool retrieves and queries disk metadata without modifying, deleting, or executing operations. It has no side effects and is a standard read operation. Low severity due to the limited sensitivity of the returned metadata (disk properties rather than encrypted data or secrets), and the broad context of infrastructure management where disk inventory queries are routine operations.

From the tool's own definition: "Tool description states it 'Lists Compute Engine disks' and 'Details for each disk include name, ID, description, creation timestamp, size, type, status, last attach timestamp, and last detach timestamp.' This is purely a retrieval/query operation with no…"

## Use case

AI agents call list_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_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_images` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-images.md
- `list_instance_attached_disks` — Read — https://policylayer.com/tools/com-googleapis-compute-mcp/list-instance-attached-disks.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