list_expense_categories
AI agents call list_expense_categories to retrieve information from Clockify Time Tracking 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 expense category information with no indication of creating, modifying, or deleting data. It performs a read-only operation. Severity is low because listing categories poses minimal risk even if misused by an agent—it merely reveals organizational structure without enabling financial transactions, data destruction, or code execution.
From the tool's definition Tool name 'list_expense_categories' indicates retrieval of expense category data. Description is empty, but naming convention and context (sibling tools operate on Clockify data) strongly suggest this queries/enumerates existing categories without…
Attacks that exploit this kind of access
list_expense_categories. It is categorised as a Read tool in the Clockify Time Tracking MCP Server, which means it retrieves data without modifying state.
Register the Clockify Time Tracking MCP server in PolicyLayer and add a rule for list_expense_categories: 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 Clockify Time Tracking. Nothing to install.
list_expense_categories 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_expense_categories 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_expense_categories. 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_expense_categories is provided by the Clockify Time Tracking MCP server (pypi:clockify-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
list_expense_categories is one line of Clockify Time Tracking's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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