AI agents call gmail_get_vacation_responder to retrieve information from Mcp Gmail without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves vacation responder configuration from Gmail without modifying it. Despite the empty description lowering confidence slightly, the 'get' verb pattern and context among sibling tools (which include write/destructive operations) suggest this is a read operation. Reading email settings has low severity as it cannot directly harm user data or cause unintended side effects.
From the tool's definition Tool name 'gmail_get_vacation_responder' indicates retrieval of vacation responder settings. The 'get' prefix and absence of mutation language suggest query/read-only functionality.
Attacks that exploit this kind of access
gmail_get_vacation_responder. It is categorised as a Read tool in the Mcp Gmail MCP Server, which means it retrieves data without modifying state.
Register the Mcp Gmail MCP server in PolicyLayer and add a rule for gmail_get_vacation_responder: 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 Gmail. Nothing to install.
gmail_get_vacation_responder 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 gmail_get_vacation_responder 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 gmail_get_vacation_responder. 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.
gmail_get_vacation_responder is provided by the Mcp Gmail MCP server (@monsoft/mcp-gmail). 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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