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

WHAT IT DOES

What optimize_image does on Jgkme/kilo Image Gen

AI agents use optimize_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 optimize_image needs a policy

This tool creates a modified version of an image file through re-encoding and compression. While it does not delete the original or execute arbitrary code, it irreversibly transforms image data and removes metadata. This constitutes a Write operation (modifies data reversibly in the sense that the user still possesses the original input and can re-run the optimization).

From the tool's definition Tool performs 're-encoding' and 'metadata stripped' operations on image files, modifying their content and structure. The description explicitly states it transforms images through compression and format conversion with metadata removal.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

optimize_image Rate-limited

optimize_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": {
    "optimize_image": {
      "limits": [
        {
          "counter": "optimize_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 optimize_image

What does the optimize_image tool do? +

Optimize an image for the web by re-encoding it as compressed PNG, WebP, JPEG, or AVIF with metadata stripped. 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 optimize_image? +

Register the Jgkme/kilo Image Gen MCP server in PolicyLayer and add a rule for optimize_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 optimize_image? +

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

Can I rate-limit optimize_image? +

Yes. Add a rate_limit block to the optimize_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 optimize_image completely? +

Set action: deny in the PolicyLayer policy for optimize_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 optimize_image? +

optimize_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.