Send Ctrl+C to a running command. Use when user wants to stop a long-running command.
AI agents call cancel_command to permanently remove resources in Remote Terminal — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
An AI agent that decides to call cancel_command doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Remote Terminal is gone — there is no undo for destructive operations.
Attacks that exploit this kind of access
Send Ctrl+C to a running command. Use when user wants to stop a long-running command. It is categorised as a Destructive tool in the Remote Terminal MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Remote Terminal MCP server in PolicyLayer and add a rule for cancel_command: 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 Remote Terminal. Nothing to install.
cancel_command is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the cancel_command 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.
Set action: deny in the PolicyLayer policy for cancel_command. 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.
cancel_command is provided by the Remote Terminal MCP server (tim00r/remote-terminal). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.