Kill the tmux server (destroys ALL sessions). Use with caution.
AI agents call kill_server to permanently remove resources in Post-Exploitation tmux MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly destroys all tmux sessions, windows, and panes by killing the entire tmux server process. There is no undo for this action. In a post-exploitation context, this could terminate all active agent sessions, disrupt running processes, and destroy any state maintained in tmux — making it a critical-severity destructive operation with maximum blast radius.
From the tool's definition 'Kill the tmux server (destroys ALL sessions)' and 'Use with caution'
Attacks that exploit this kind of access
Kill the tmux server (destroys ALL sessions). Use with caution. It is categorised as a Destructive tool in the Post-Exploitation tmux MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Post-Exploitation tmux MCP Server MCP server in PolicyLayer and add a rule for kill_server: 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 Post-Exploitation tmux MCP Server. Nothing to install.
kill_server 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 kill_server 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 kill_server. 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.
kill_server is provided by the Post-Exploitation tmux MCP Server MCP server (raghavansv/tmux-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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