create-media-folder · Mcp Dev MCP: Risk & Policy

WHAT IT DOES

What create-media-folder does on Mcp Dev

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

WHY IT NEEDS A POLICY

Why create-media-folder needs a policy

This tool creates a new media folder, which is a reversible write operation with minimal blast radius. It does not execute code, delete data, move money, or perform destructive actions. Creating organizational folders in a CMS media library is a standard, low-risk administrative task.

From the tool's definition Tool description states it "Creates a new folder in the media library" and explicitly notes it is for organization purposes, not file uploads. The verb "creates" indicates a Write operation that is reversible (folders can be deleted).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-media-folder Rate-limited

create-media-folder 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": {
    "create-media-folder": {
      "limits": [
        {
          "counter": "create-media-folder_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 Mcp Dev, so you can run agents against it safely.

FAQ

Questions about create-media-folder

What does the create-media-folder tool do? +

Creates a new folder in the media library. Use this to organize media items into folders. For uploading actual media files (images, documents, etc.), use the create-media tool instead. It is categorised as a Write tool in the Mcp Dev MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-media-folder? +

Register the Mcp Dev MCP server in PolicyLayer and add a rule for create-media-folder: 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 Mcp Dev. Nothing to install.

What risk level is create-media-folder? +

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

Can I rate-limit create-media-folder? +

Yes. Add a rate_limit block to the create-media-folder 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 create-media-folder completely? +

Set action: deny in the PolicyLayer policy for create-media-folder. 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 create-media-folder? +

create-media-folder is provided by the Mcp Dev MCP server (@umbraco-cms/mcp-dev). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.