Fetches the current leave balances.
AI agents call leave.get_balances 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 returns leave balance information without creating, modifying, deleting, or executing any operations. It is a straightforward read operation that retrieves employee leave data from the TwolineCloud internal portal. The low severity reflects minimal blast radius if misused — disclosure of leave balances has limited security impact compared to destructive or financial operations.
From the tool's definition Tool description states 'Fetches the current leave balances' — a retrieval operation with no data modification capability.
Attacks that exploit this kind of access
Fetches the current leave balances. 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.get_balances: 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.get_balances 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.get_balances 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.get_balances. 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.get_balances 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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