AI agents call list_sessions to retrieve information from Iterm2 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 existing iTerm2 sessions without modifying, executing, or deleting anything. It is a pure read operation analogous to 'list' or 'get'. The low severity reflects that session enumeration alone poses minimal risk, though the broader server context (command execution, screen reading) presents higher risks elsewhere.
From the tool's definition Tool name 'list_sessions' and description 'List all iTerm2 windows, tabs, and sessions' indicate a query/enumeration operation with no side effects.
Attacks that exploit this kind of access
List all iTerm2 windows, tabs, and sessions. It is categorised as a Read tool in the Iterm2 MCP Server, which means it retrieves data without modifying state.
Register the Iterm2 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 Iterm2. 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 Iterm2 MCP server (lorencarvalho/iterm2-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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