List all terminal tabs
AI agents call list_tabs to retrieve information from Terminally MCP 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 a list of terminal tabs within the tmux environment. It has no side effects—it does not create, modify, delete, or execute anything. It is purely informational retrieval, falling clearly into the Read category. Severity is low because exposing a list of active sessions poses minimal risk compared to execution or destruction capabilities on the same server.
From the tool's definition Tool name 'list_tabs' and description 'List all terminal tabs' indicate a read-only operation that retrieves information about existing terminal sessions without modification or execution.
Attacks that exploit this kind of access
List all terminal tabs. It is categorised as a Read tool in the Terminally MCP MCP Server, which means it retrieves data without modifying state.
Register the Terminally MCP server in PolicyLayer and add a rule for list_tabs: 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 Terminally MCP. Nothing to install.
list_tabs 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_tabs 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_tabs. 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_tabs is provided by the Terminally MCP server (nighttrek/terminally-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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