karea_update_resource · Karea MCP: Risk & Policy

WHAT IT DOES

What karea_update_resource does on Karea

AI agents use karea_update_resource 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_update_resource needs a policy

The tool creates or modifies data reversibly by updating an existing resource. This is a Write operation—it changes data but does not irreversibly delete it. Severity is medium because unintended updates to shared resources in a task management system could disrupt workflows, but the action is reversible (a previous version can typically be restored or re-edited).

From the tool's definition Tool name and description explicitly state 'Update a text resource', indicating modification of existing data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

karea_update_resource Rate-limited

karea_update_resource 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_update_resource": {
      "limits": [
        {
          "counter": "karea_update_resource_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_update_resource

What does the karea_update_resource tool do? +

Update a text resource. 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_update_resource? +

Register the Karea MCP server in PolicyLayer and add a rule for karea_update_resource: 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_update_resource? +

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

Can I rate-limit karea_update_resource? +

Yes. Add a rate_limit block to the karea_update_resource 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_update_resource completely? +

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

karea_update_resource 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.