karea_create_subtask · Karea MCP: Risk & Policy

WHAT IT DOES

What karea_create_subtask does on Karea

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

WHY IT NEEDS A POLICY

Why karea_create_subtask needs a policy

The tool creates new data (a subtask) in the task management system, which is a Write operation. The severity is medium because while subtask creation is reversible (tasks can typically be deleted), misuse could clutter the task system or create many unwanted subtasks, but lacks the irreversibility of Destructive operations or financial impact.

From the tool's definition Tool name contains 'create' and description states 'Create a subtask under a parent task'. This is a reversible data modification operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

karea_create_subtask Rate-limited

karea_create_subtask 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": {
    "karea_create_subtask": {
      "limits": [
        {
          "counter": "karea_create_subtask_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 Karea, so you can run agents against it safely.

FAQ

Questions about karea_create_subtask

What does the karea_create_subtask tool do? +

Create a subtask under a parent task. Accepts the parent by visual ID (e.g. KPL77), name, or UUID. Supports the same params as karea_create_task. It is categorised as a Write tool in the Karea MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on karea_create_subtask? +

Register the Karea MCP server in PolicyLayer and add a rule for karea_create_subtask: 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 Karea. Nothing to install.

What risk level is karea_create_subtask? +

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

Can I rate-limit karea_create_subtask? +

Yes. Add a rate_limit block to the karea_create_subtask 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 karea_create_subtask completely? +

Set action: deny in the PolicyLayer policy for karea_create_subtask. 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 karea_create_subtask? +

karea_create_subtask is provided by the Karea MCP server (starecz/karea-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.