convert_and_resize · Imagic MCP: Risk & Policy

WHAT IT DOES

What convert_and_resize does on Imagic

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

WHY IT NEEDS A POLICY

Why convert_and_resize needs a policy

This tool creates or modifies image data by converting formats and resizing dimensions. These are reversible operations—the original image is not deleted, and new versions can be regenerated or deleted. It does not execute arbitrary code, delete data irreversibly, or perform financial operations. The local execution with no uploads minimizes blast radius.

From the tool's definition Tool performs 'convert' and 'resize' operations on images, creating modified versions of image files. The description states it converts image format and resizes in 'a single operation', indicating data transformation and creation of new image outputs.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

convert_and_resize Rate-limited

convert_and_resize 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": {
    "convert_and_resize": {
      "limits": [
        {
          "counter": "convert_and_resize_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 Imagic, so you can run agents against it safely.

FAQ

Questions about convert_and_resize

What does the convert_and_resize tool do? +

Convert an image to a new format and resize it in a single operation. It is categorised as a Write tool in the Imagic MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on convert_and_resize? +

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

What risk level is convert_and_resize? +

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

Can I rate-limit convert_and_resize? +

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

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

convert_and_resize is provided by the Imagic MCP server (sonic0002/imagic-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.