copy-media-type · Mcp Dev MCP: Risk & Policy

WHAT IT DOES

What copy-media-type does on Mcp Dev

AI agents use copy-media-type 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 copy-media-type needs a policy

The 'copy' operation creates a duplicate of a media type in a new location within the Umbraco CMS. This is a Write action because it creates new data (a copy) reversibly—the original remains and can be deleted if needed. It does not execute arbitrary code, delete irreversibly, or move money, so it does not qualify as Execute, Destructive, or Financial.

From the tool's definition Tool name is 'copy-media-type' with description 'Copy a media type to a new location' — this operation creates a new copy of a media type configuration, which is a reversible modification that results in new data being created in the CMS.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

copy-media-type Rate-limited

copy-media-type 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": {
    "copy-media-type": {
      "limits": [
        {
          "counter": "copy-media-type_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 copy-media-type

What does the copy-media-type tool do? +

Copy a media type to a new location. 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 copy-media-type? +

Register the Mcp Dev MCP server in PolicyLayer and add a rule for copy-media-type: 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 copy-media-type? +

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

Can I rate-limit copy-media-type? +

Yes. Add a rate_limit block to the copy-media-type 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 copy-media-type completely? +

Set action: deny in the PolicyLayer policy for copy-media-type. 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 copy-media-type? +

copy-media-type 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.