itunes_previous

THE RISK

High Risk

Why itunes_previous needs a policy

This tool triggers an external operation (controlling Apple Music playback via AppleScript) to navigate to the previous track. It executes an action on an external application rather than simply reading data or writing/modifying stored data. The blast radius is low as it only affects music playback state.

From the tool's definition Return to the previous track

Documented attack patterns abuse exactly the kind of access itunes_previous gives an agent:

POLICY

How to control itunes_previous

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP-AppleMusic, and nothing reaches the server without passing your rules. This is the rule we recommend for itunes_previous:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "itunes_previous": {
      "limits": [
        {
          "counter": "itunes_previous_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

itunes_previous stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register MCP-AppleMusic — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More MCP-AppleMusic tools

Execute itunes_play Start playback in Music (iTunes). Execute itunes_next Skip to the next track. Execute itunes_pause Pause playback in Music (iTunes). Execute itunes_play_song Play the first track whose name exactly matches the given song name. Returns a confirm Write itunes_create_playlist Create a new playlist with the given name and add tracks to it. 'songs' should be a co Read itunes_all_songs Get a list of all songs in the Music library. Returns a formatted list of all tracks w Read itunes_current_song Get information about the currently playing track. Returns the track name, artist, and Read itunes_library Return a summary of the Music library, including total tracks and user playlists.

All 10 MCP-AppleMusic tools →

Execute tools on other servers

Android Forensics ADB MCP Server adb_shell_command EMBA-MCP run_emba_scan Frida Game Hacking MCP remove_breakpoint Procmon request_elevation

Go deeper

High-risk tools in MCP-AppleMusic → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about itunes_previous

What does the itunes_previous tool do? +

Return to the previous track. It is categorised as a Execute tool in the MCP-AppleMusic MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on itunes_previous? +

Register the MCP-AppleMusic MCP server in PolicyLayer and add a rule for itunes_previous: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches MCP-AppleMusic. Nothing to install.

What risk level is itunes_previous? +

itunes_previous is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit itunes_previous? +

Yes. Add a rate_limit block to the itunes_previous rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block itunes_previous completely? +

Set action: deny in the PolicyLayer policy for itunes_previous. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides itunes_previous? +

itunes_previous is provided by the MCP-AppleMusic MCP server (kennethreitz/mcp-applemusic). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP-AppleMusic tool call.

Start from MCP-AppleMusic, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →