update_expense_category · Clockify Time Tracking MCP

WHAT IT DOES

What update_expense_category does on Clockify Time Tracking

AI agents use update_expense_category to create or update resources in Clockify Time Tracking — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Clockify Time Tracking environment.

WHY IT NEEDS A POLICY

Why update_expense_category needs a policy

This tool modifies expense category metadata (name and pricing settings) rather than deleting or creating entries. Updates are reversible—settings can be changed again. While it affects financial-related data structures, it does not directly move money or commit financial obligations; it only configures parameters.

From the tool's definition Tool description states 'Update an expense category's name and unit-pricing settings.' The verb 'update' indicates modification of existing data (expense category configuration) in a reversible manner.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_expense_category Rate-limited

update_expense_category stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_expense_category": {
      "limits": [
        {
          "counter": "update_expense_category_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Clockify Time Tracking, so you can run agents against it safely.

FAQ

Questions about update_expense_category

What does the update_expense_category tool do? +

Update an expense category's name and unit-pricing settings. It is categorised as a Write tool in the Clockify Time Tracking MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_expense_category? +

Register the Clockify Time Tracking MCP server in PolicyLayer and add a rule for update_expense_category: 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.

What risk level is update_expense_category? +

update_expense_category is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_expense_category? +

Yes. Add a rate_limit block to the update_expense_category 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.

How do I block update_expense_category completely? +

Set action: deny in the PolicyLayer policy for update_expense_category. 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.

What MCP server provides update_expense_category? +

update_expense_category 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.