Returns the supported leave type list.
AI agents call leave.list_types to retrieve information from Tlc Portal 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 a static or semi-static list of leave types available in the system. It has no side effects, does not modify any data, does not execute code or external operations, and does not affect financial obligations. The blast radius of misuse is minimal — an attacker could only learn what leave types are supported, which is typically non-sensitive configuration data.
From the tool's definition Tool name is 'leave.list_types' and description states it 'Returns the supported leave type list' — a retrieval operation with no modification, creation, or deletion of data.
Attacks that exploit this kind of access
Returns the supported leave type list. It is categorised as a Read tool in the Tlc Portal MCP Server, which means it retrieves data without modifying state.
Register the Tlc Portal MCP server in PolicyLayer and add a rule for leave.list_types: 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 Tlc Portal. Nothing to install.
leave.list_types 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 leave.list_types 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 leave.list_types. 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.
leave.list_types is provided by the Tlc Portal MCP server (mingovvv/tlc-portal-mcp). 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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