finalize_image · Jgkme/kilo Image Gen MCP: Risk & Policy

WHAT IT DOES

What finalize_image does on Jgkme/kilo Image Gen

AI agents use finalize_image to create or update resources in Jgkme/kilo Image Gen — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Jgkme/kilo Image Gen environment.

WHY IT NEEDS A POLICY

Why finalize_image needs a policy

This tool processes and saves an image file locally. It creates/overwrites a PNG file on disk, which is a reversible Write operation (the output file can be deleted or overwritten). It does not execute arbitrary code or irreversibly destroy data beyond normal file saving semantics.

From the tool's definition Finalize an image locally by optionally removing the background...and then cropping, trimming, resizing, and saving a PNG

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

finalize_image Rate-limited

finalize_image 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": {
    "finalize_image": {
      "limits": [
        {
          "counter": "finalize_image_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 Jgkme/kilo Image Gen, so you can run agents against it safely.

FAQ

Questions about finalize_image

What does the finalize_image tool do? +

Finalize an image locally by optionally removing the background with local or daemon-backed matting and then cropping, trimming, resizing, and saving a PNG. It is categorised as a Write tool in the Jgkme/kilo Image Gen MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on finalize_image? +

Register the Jgkme/kilo Image Gen MCP server in PolicyLayer and add a rule for finalize_image: 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 Jgkme/kilo Image Gen. Nothing to install.

What risk level is finalize_image? +

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

Can I rate-limit finalize_image? +

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

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

finalize_image is provided by the Jgkme/kilo Image Gen MCP server (jgkme/img-gen-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.