upscale_image · Nano Banana Claude MCP: Risk & Policy

WHAT IT DOES

What upscale_image does on Nano Banana Claude

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

WHY IT NEEDS A POLICY

Why upscale_image needs a policy

The tool name and server description ('upscaling') suggest it increases image resolution/quality. This is a Write operation as it creates a modified version of existing data. Confidence is low because the description is empty, leaving exact behavior unclear.

From the tool's definition Tool name 'upscale_image' and server context mentioning 'upscaling' as a post-processing feature.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

upscale_image Rate-limited

upscale_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": {
    "upscale_image": {
      "limits": [
        {
          "counter": "upscale_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 Nano Banana Claude, so you can run agents against it safely.

FAQ

Questions about upscale_image

What does the upscale_image tool do? +

upscale_image. It is categorised as a Write tool in the Nano Banana Claude MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on upscale_image? +

Register the Nano Banana Claude MCP server in PolicyLayer and add a rule for upscale_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 Nano Banana Claude. Nothing to install.

What risk level is upscale_image? +

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

Can I rate-limit upscale_image? +

Yes. Add a rate_limit block to the upscale_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 upscale_image completely? +

Set action: deny in the PolicyLayer policy for upscale_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 upscale_image? +

upscale_image is provided by the Nano Banana Claude MCP server (tougenrip/nano-banana-claude). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.