karea_create_category · Karea MCP: Risk & Policy

WHAT IT DOES

What karea_create_category does on Karea

AI agents use karea_create_category 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_category needs a policy

This tool creates new organizational structures (categories) within a project. It is a reversible write operation—categories can typically be edited or deleted later. It does not execute arbitrary code, delete irreversibly, move money, or retrieve data passively. The blast radius is limited to organizational metadata within a single project, making it medium severity rather than high.

From the tool's definition Tool name is 'karea_create_category' and description states 'Create a new category in the current project'. The verb 'Create' indicates a write operation that adds new data to the system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

karea_create_category Rate-limited

karea_create_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": {
    "karea_create_category": {
      "limits": [
        {
          "counter": "karea_create_category_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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_category

What does the karea_create_category tool do? +

Create a new category in the current project. 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_category? +

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

What risk level is karea_create_category? +

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

Can I rate-limit karea_create_category? +

Yes. Add a rate_limit block to the karea_create_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 karea_create_category completely? +

Set action: deny in the PolicyLayer policy for karea_create_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 karea_create_category? +

karea_create_category 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.