adjustBrightness · ImageEditorMCPServer MCP: Risk & Policy

WHAT IT DOES

What adjustBrightness does on ImageEditorMCPServer

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

WHY IT NEEDS A POLICY

Why adjustBrightness needs a policy

Adjusting image brightness modifies the image data. This is a reversible write operation — the image is altered but the change could be undone by re-adjusting brightness or restoring from original. It does not execute arbitrary code, delete data, or involve financial transactions.

From the tool's definition Tool name 'adjustBrightness' and description '画像の明るさを調整します' (adjusts image brightness). Server description mentions 'brightness adjustment' as an image editing operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

adjustBrightness Rate-limited

adjustBrightness 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": {
    "adjustBrightness": {
      "limits": [
        {
          "counter": "adjustbrightness_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 ImageEditorMCPServer, so you can run agents against it safely.

FAQ

Questions about adjustBrightness

What does the adjustBrightness tool do? +

画像の明るさを調整します。. It is categorised as a Write tool in the ImageEditorMCPServer MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on adjustBrightness? +

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

What risk level is adjustBrightness? +

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

Can I rate-limit adjustBrightness? +

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

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

adjustBrightness is provided by the ImageEditorMCPServer MCP server (kentakki416/image-editor-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.