Proxy list_control_tests to the guided-assurance leaf MCP
AI agents call list_control_tests 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 retrieves or queries control test data from another MCP service without modifying, executing, or deleting anything. It performs a read-only lookup operation. Severity is low because listing control tests has minimal blast radius—it provides informational data for auditing purposes with no side effects on systems or data integrity.
From the tool's definition Tool name is 'list_control_tests' and description states it 'Proxy list_control_tests to the guided-assurance leaf MCP'. The verb 'list' indicates a retrieval operation.
Attacks that exploit this kind of access
Proxy list_control_tests to the guided-assurance 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_control_tests: 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_control_tests 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_control_tests 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_control_tests. 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_control_tests 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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