AI agents call list_sessions to retrieve information from Mcp Gemini Assistant without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about existing sessions without creating, modifying, deleting, or executing anything. It is a passive read operation that returns information about session state. While information disclosure could have minor privacy implications in a multi-user context, the severity is low as it merely lists sessions without exposing their contents. Confidence is high because the intent is unambiguous.
From the tool's definition Tool name 'list_sessions' and description 'List all active Gemini consultation sessions' indicate a query/retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access list_sessions gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Gemini Assistant, and nothing reaches the server without passing your rules. This is the rule we recommend for list_sessions:
{
"version": "1",
"default": "deny",
"tools": {
"list_sessions": {}
}
}list_sessions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all active Gemini consultation sessions. It is categorised as a Read tool in the Mcp Gemini Assistant MCP Server, which means it retrieves data without modifying state.
Register the Mcp Gemini Assistant 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 Mcp Gemini Assistant. 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 Mcp Gemini Assistant MCP server (peterkrueck/mcp-gemini-assistant). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 Mcp Gemini Assistant tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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4 Mcp Gemini Assistant tools catalogued and risk-classified — across an index of 42,500+ MCP servers.