Get the user\
AI agents call get_working_hours to retrieve information from MCP Calendar Assistant without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves user working hours information from a calendar system. It has no side effects, does not create, modify, or delete data, and does not execute code or transfer funds. It is a straightforward read operation that queries calendar configuration or schedule metadata.
From the tool's definition Tool name 'get_working_hours' and the server's calendar management context indicate a retrieval operation. The description is truncated but the name clearly suggests fetching/querying working hours data without modification.
Attacks that exploit this kind of access
Get the user\. It is categorised as a Read tool in the MCP Calendar Assistant MCP Server, which means it retrieves data without modifying state.
Register the MCP Calendar Assistant MCP server in PolicyLayer and add a rule for get_working_hours: 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 Calendar Assistant. Nothing to install.
get_working_hours 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 get_working_hours 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 get_working_hours. 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.
get_working_hours is provided by the MCP Calendar Assistant MCP server (momer17/mailmcp). 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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