Lists all hosts configured in ~/.ssh/config
AI agents call ssh_list_configured_hosts to retrieve information from Mcp Ssh Tool 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 SSH host configuration information from ~/.ssh/config, which is a read-only operation with no side effects. It does not execute commands, modify files, delete data, or perform financial operations. The blast radius is minimal—an AI agent misusing this tool could only enumerate configured hosts, not access them or cause damage.
From the tool's definition Tool name 'ssh_list_configured_hosts' and description 'Lists all hosts configured in ~/.ssh/config' indicate a query operation that retrieves SSH configuration data without modification or execution.
Attacks that exploit this kind of access
Lists all hosts configured in ~/.ssh/config. It is categorised as a Read tool in the Mcp Ssh Tool MCP Server, which means it retrieves data without modifying state.
Register the Mcp Ssh Tool MCP server in PolicyLayer and add a rule for ssh_list_configured_hosts: 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 Mcp Ssh Tool. Nothing to install.
ssh_list_configured_hosts 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_configured_hosts 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_configured_hosts. 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_configured_hosts is provided by the Mcp Ssh Tool MCP server (skot/mcp-ssh-tool). 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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