AI agents call ssh_list_interactive_sessions to retrieve information from Ssh Agent without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays information about active SSH sessions without creating, modifying, deleting, or executing any actions. It is purely informational and has no side effects. The low severity reflects minimal blast radius—an AI agent misusing this tool could at worst enumerate existing sessions but cannot alter them or execute commands.
From the tool's definition Tool name 'ssh_list_interactive_sessions' with description 'Lists all active interactive sessions' (translated from Chinese: '列出所有活跃的交互式会话'). The verb 'list' indicates querying/retrieving session information without modification.
Attacks that exploit this kind of access
列出所有活跃的交互式会话. It is categorised as a Read tool in the Ssh Agent MCP Server, which means it retrieves data without modifying state.
Register the Ssh Agent MCP server in PolicyLayer and add a rule for ssh_list_interactive_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 Ssh Agent. Nothing to install.
ssh_list_interactive_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 ssh_list_interactive_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 ssh_list_interactive_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.
ssh_list_interactive_sessions is provided by the Ssh Agent MCP server (zhijun/ssh-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.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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