# list_device_preferences

List readable virtual-office media device preferences.

Agent View of the PolicyLayer registry record for `list_device_preferences`. HTML page: https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/list-device-preferences

## Facts

- Tool: `list_device_preferences`
- Server: Huly (`@firfi/huly-mcp`) — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp.md
- Install: `npx -y @firfi/huly-mcp`
- Homepage: https://github.com/dearlordylord/huly-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "list_device_preferences",
    "arguments": {}
  }
}
```

## Why list_device_preferences is rated Low

This tool retrieves existing device preference settings from a virtual office system. It performs a query operation with no capacity to modify, delete, or execute operations. The blast radius of misuse is minimal—an unauthorized user could view device preferences but cannot alter system state or trigger external actions. This is a straightforward Read operation.

From the tool's own definition: "Tool name and description explicitly state 'List readable virtual-office media device preferences.' The verb 'List' and qualifier 'readable' indicate data retrieval without modification or side effects."

## Use case

AI agents call list_device_preferences to retrieve information from Huly 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 Huly:

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

## Other tools on Huly (517)

- `cancel_approval_request` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/cancel-approval-request.md
- `cancel_execution` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/cancel-execution.md
- `delete_activity_reply` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-activity-reply.md
- `delete_association` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-association.md
- `delete_attachment` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-attachment.md
- `delete_board_card` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-board-card.md
- `delete_board_label` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-board-label.md
- `delete_card` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-card.md
- `delete_card_comment` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-card-comment.md
- `delete_channel` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-channel.md
- `delete_channel_message` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-channel-message.md
- `delete_chat_message_attachment` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-chat-message-attachment.md
- `delete_class_collaborator_metadata` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-class-collaborator-metadata.md
- `delete_comment` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-comment.md
- `delete_component` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-component.md
- `delete_dm_message` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-dm-message.md
- `delete_document` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-document.md
- `delete_drawing` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-drawing.md
- `delete_drive` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-drive.md
- `delete_drive_file_comment` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-drive-file-comment.md
- `delete_drive_item` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-drive-item.md
- `delete_event` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-event.md
- `delete_huly_attribute` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-huly-attribute.md
- `delete_huly_enum` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-huly-enum.md
- `delete_huly_permission` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-huly-permission.md
- `delete_huly_sequence` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-huly-sequence.md
- `delete_inventory_category` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-inventory-category.md
- `delete_inventory_product` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-inventory-product.md
- `delete_inventory_product_attachment` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-inventory-product-attachment.md
- `delete_inventory_product_comment` — Destructive — https://policylayer.com/tools/io-github-dearlordylord-huly-mcp/delete-inventory-product-comment.md
- …and 487 more: https://policylayer.com/tools/io-github-dearlordylord-huly-mcp.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=io-github-dearlordylord-huly-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-dearlordylord-huly-mcp