km_delete_action

THE RISK

Critical Risk

Why km_delete_action needs a policy

This tool permanently removes data (macro actions) from stored macros without possibility of recovery. The explicit warning about irreversibility and the destructive nature of deletion operations classify it as Destructive rather than Write. While the blast radius is limited to macro configuration rather than system-wide data, the irreversible nature and the warning justify high severity.

From the tool's definition Tool description explicitly states: 'Delete a specific action from a macro' and 'WARNING: This cannot be undone!' The irreversible deletion of macro actions matches the Destructive category definition.

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

POLICY

How to control km_delete_action

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

policy.json

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

km_delete_action 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 Keyboard Maestro — 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

Related tools and policies

More Keyboard Maestro tools

Destructive km_delete_macro Delete a macro by name or UID. WARNING: This cannot be undone! Destructive km_delete_trigger Delete a trigger from a macro. Triggers are 1-indexed. Destructive km_manage_group Manage macro groups (create, delete, toggle, list). Execute km_run_macro Execute a macro by name or UID. Execute km_add_execute_macro Add an action to execute another macro. Execute km_add_shell_script Add an action to execute a shell script. Write km_search_replace_action Search and replace text within a specific action in a macro. Useful for fixing typos or up Write km_add_action Add an action to an existing macro using XML.

All 34 Keyboard Maestro tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in Keyboard Maestro → 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.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about km_delete_action

What does the km_delete_action tool do? +

Delete a specific action from a macro. Actions are 1-indexed. WARNING: This cannot be undone!. It is categorised as a Destructive tool in the Keyboard Maestro 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 km_delete_action? +

Register the Keyboard Maestro MCP server in PolicyLayer and add a rule for km_delete_action: 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 Keyboard Maestro. Nothing to install.

What risk level is km_delete_action? +

km_delete_action 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 km_delete_action? +

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

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

km_delete_action is provided by the Keyboard Maestro MCP server (saihgupr/keyboard-maestro-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Keyboard Maestro tool call.

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

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