edit_trim

THE RISK

Critical Risk

This tool irreversibly deletes all audio content outside the selected region. The deletion of audio data is a destructive, non-reversible operation (unless undo is available, but the tool itself performs permanent removal of content). Misuse could result in loss of large portions of an audio project.

From the tool's definition Trim audio outside the selection (delete everything except selected region)

Risk signalsBulk/mass operation — affects multiple targets

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

HOW TO CONTROL EDIT_TRIM

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

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "edit_trim"
  ]
}

edit_trim disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

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

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

More AudacityMCP tools

Destructive track_remove Remove the currently selected track(s). Select tracks first with track_select. Destructive edit_delete Delete the selected audio (does not copy to clipboard). Select a region first. Destructive edit_split_delete Delete the selected audio without closing the gap (leaves silence where audio was). Execute effect_low_pass_filter Apply a low-pass filter to remove high frequencies above the cutoff. Execute effect_notch_filter Remove a specific frequency (e.g. 50/60Hz hum) with a notch filter. Execute truncate_silence truncate_silence Execute cursor_to_project_start Move the cursor to the start of the project (time 0). Execute cursor_to_track_start Move the cursor to the start of the selected track.

All 131 AudacityMCP tools →

Destructive tools on other servers

Frida Game Hacking MCP clear_scan MegaMemory remove_concept Frida Agent MCP kill_app 1MCP Server mcp_uninstall

Go deeper

Critical-risk tools in AudacityMCP → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-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.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

What does the edit_trim tool do? +

Trim audio outside the selection (delete everything except selected region). It is categorised as a Destructive tool in the AudacityMCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on edit_trim? +

Register the Audacity MCP server in PolicyLayer and add a rule for edit_trim: 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 AudacityMCP. Nothing to install.

What risk level is edit_trim? +

edit_trim is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit edit_trim? +

Yes. Add a rate_limit block to the edit_trim 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 edit_trim completely? +

Set action: deny in the PolicyLayer policy for edit_trim. 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 edit_trim? +

edit_trim is provided by the Audacity MCP server (xdarkzx/audacity-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every AudacityMCP tool call.

Deterministic rules across all 131 AudacityMCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

GOVERN AUDACITYMCP →

Free to start. No card required.

131 AudacityMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

// WHAT EDIT_TRIM ON AUDACITYMCP DOES

// THE RISK

// HOW TO CONTROL EDIT_TRIM

// EXPLORE