List all active SSH sessions and saved servers.
AI agents call ssh_list_sessions to retrieve information from Claude Ssh without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about existing SSH sessions and server configurations without modifying, executing, or destroying anything. It is a straightforward information retrieval function, fitting the Read category with low severity since it only exposes metadata about connections that an authorized user would typically have access to.
From the tool's definition Tool name 'ssh_list_sessions' and description 'List all active SSH sessions and saved servers' indicate a retrieval operation with no side effects. The verb 'list' is a pure read operation.
Attacks that exploit this kind of access
List all active SSH sessions and saved servers. It is categorised as a Read tool in the Claude Ssh MCP Server, which means it retrieves data without modifying state.
Register the Claude Ssh MCP server in PolicyLayer and add a rule for ssh_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 Claude Ssh. Nothing to install.
ssh_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 ssh_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 ssh_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.
ssh_list_sessions is provided by the Claude Ssh MCP server (marabank/mcp-ssh-server). 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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