# stop_tunnel

Stop a managed local tunnel.

Agent View of the PolicyLayer registry record for `stop_tunnel`. HTML page: https://policylayer.com/tools/mcp-control-plane/stop-tunnel

## Facts

- Tool: `stop_tunnel`
- Server: Mcp Control Plane (`albertik322-sudo/mcp-control-plane`) — https://policylayer.com/tools/mcp-control-plane.md
- Homepage: https://github.com/albertik322-sudo/mcp-control-plane
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why stop_tunnel is rated High

Stopping a tunnel is an Execute-class action because it triggers an external operation (tunnel termination) whose effects depend on which tunnel is targeted via arguments. It is not Destructive because tunnel shutdown is reversible (the tunnel can be restarted). It is not Write because it doesn't create or modify data reversibly—it stops a running service.

From the tool's own definition: "Tool name 'stop_tunnel' and description 'Stop a managed local tunnel' indicates an action that terminates an active network tunnel, which is an operational change with external effects."

## Use case

AI agents invoke stop_tunnel to trigger actions in Mcp Control Plane. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "stop_tunnel": {
      "limits": [
        {
          "counter": "stop_tunnel_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Mcp Control Plane (285)

- `request_durable_task_cancel` — Destructive — https://policylayer.com/tools/mcp-control-plane/request-durable-task-cancel.md
- `steam_rom_manager_cli` — Destructive — https://policylayer.com/tools/mcp-control-plane/steam-rom-manager-cli.md
- `steam_rom_manager_nuke` — Destructive — https://policylayer.com/tools/mcp-control-plane/steam-rom-manager-nuke.md
- `steam_rom_manager_remove` — Destructive — https://policylayer.com/tools/mcp-control-plane/steam-rom-manager-remove.md
- `activate_window` — Execute — https://policylayer.com/tools/mcp-control-plane/activate-window.md
- `admin_run` — Execute — https://policylayer.com/tools/mcp-control-plane/admin-run.md
- `api_sentence` — Execute — https://policylayer.com/tools/mcp-control-plane/api-sentence.md
- `apply_unified_patch_remote` — Execute — https://policylayer.com/tools/mcp-control-plane/apply-unified-patch-remote.md
- `apt_maintenance` — Execute — https://policylayer.com/tools/mcp-control-plane/apt-maintenance.md
- `call_service` — Execute — https://policylayer.com/tools/mcp-control-plane/call-service.md
- `click` — Execute — https://policylayer.com/tools/mcp-control-plane/click.md
- `click_at` — Execute — https://policylayer.com/tools/mcp-control-plane/click-at.md
- `click_in_window` — Execute — https://policylayer.com/tools/mcp-control-plane/click-in-window.md
- `comfy_generate_from_asset` — Execute — https://policylayer.com/tools/mcp-control-plane/comfy-generate-from-asset.md
- `comfy_interrupt` — Execute — https://policylayer.com/tools/mcp-control-plane/comfy-interrupt.md
- `comfy_restart` — Execute — https://policylayer.com/tools/mcp-control-plane/comfy-restart.md
- `deck_exec` — Execute — https://policylayer.com/tools/mcp-control-plane/deck-exec.md
- `deck_probe` — Execute — https://policylayer.com/tools/mcp-control-plane/deck-probe.md
- `dns_test` — Execute — https://policylayer.com/tools/mcp-control-plane/dns-test.md
- `docker_compose` — Execute — https://policylayer.com/tools/mcp-control-plane/docker-compose.md
- `docker_container_action` — Execute — https://policylayer.com/tools/mcp-control-plane/docker-container-action.md
- `docker_exec` — Execute — https://policylayer.com/tools/mcp-control-plane/docker-exec.md
- `double_click` — Execute — https://policylayer.com/tools/mcp-control-plane/double-click.md
- `drag_to` — Execute — https://policylayer.com/tools/mcp-control-plane/drag-to.md
- `focus_window_win32` — Execute — https://policylayer.com/tools/mcp-control-plane/focus-window-win32.md
- `hold_key` — Execute — https://policylayer.com/tools/mcp-control-plane/hold-key.md
- `hotkey` — Execute — https://policylayer.com/tools/mcp-control-plane/hotkey.md
- `install_flatpak_emulators` — Execute — https://policylayer.com/tools/mcp-control-plane/install-flatpak-emulators.md
- `key_down` — Execute — https://policylayer.com/tools/mcp-control-plane/key-down.md
- `key_up` — Execute — https://policylayer.com/tools/mcp-control-plane/key-up.md
- …and 255 more: https://policylayer.com/tools/mcp-control-plane.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=mcp-control-plane · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/mcp-control-plane