List all active tmux sessions.
AI agents call list_sessions to retrieve information from Post-Exploitation tmux MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query of tmux session state. It retrieves information about active sessions without side effects, which is the defining characteristic of the Read category. The severity is low because listing sessions reveals only metadata about running processes, not sensitive data contents, and cannot be exploited to cause harm directly.
From the tool's definition Tool name 'list_sessions' and description 'List all active tmux sessions' indicate data retrieval with no modifications.
Attacks that exploit this kind of access
List all active tmux sessions. It is categorised as a Read tool in the Post-Exploitation tmux MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Post-Exploitation tmux MCP Server MCP server in PolicyLayer and add a rule for list_sessions: 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.
list_sessions is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_sessions 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 list_sessions. 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.
list_sessions 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.
Every MCP server has a record like this.
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