Proxy list_employee_leaves to the leave-management leaf MCP
AI agents call list_employee_leaves to retrieve information from MCP Leave Management without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves leave information for employees without creating, modifying, or deleting records. It is a straightforward read operation with no side effects. Severity is low because viewing leave records poses minimal risk; disclosure of leave data is a privacy concern but does not enable financial, destructive, or execution-based attacks.
From the tool's definition Tool name 'list_employee_leaves' and description 'Proxy list_employee_leaves to the leave-management leaf MCP' indicate data retrieval. The 'list' verb and lack of modification language confirm read-only querying of leave records.
Attacks that exploit this kind of access
Proxy list_employee_leaves to the leave-management leaf MCP. It is categorised as a Read tool in the MCP Leave Management MCP Server, which means it retrieves data without modifying state.
Register the MCP Leave Management MCP server in PolicyLayer and add a rule for list_employee_leaves: 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 Leave Management. Nothing to install.
list_employee_leaves 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_employee_leaves 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_employee_leaves. 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_employee_leaves is provided by the MCP Leave Management MCP server (jaylathiatr/mcp-leave-management). 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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