generate_icon

Generate app icons, favicons, and UI elements in multiple sizes and formats

SERVERNano Banana SOURCEaeven-ai/mcp-nanobanana

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade B, identity unverified Pull the record →

This record as markdown: /tools/aeven-ai-mcp-nanobanana/generate-icon.md

WHAT IT DOES

What generate_icon does on Nano Banana

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

RISK

Why generate_icon is rated Medium

This tool creates new image files but does not permanently delete, move money, or execute arbitrary code. Image generation is a Write operation: it produces new data artifacts that can be modified or removed. Severity is medium because misuse could result in creation of misleading icons or phishing assets, but damage is limited to generated outputs rather than system compromise or financial loss.

From the tool's definition Tool description explicitly states 'Generate app icons, favicons, and UI elements' — the word 'Generate' indicates creation of new image data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs generate_icon safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Nano Banana, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For generate_icon, this is the rule to start with:

generate_icon Rate-limited

generate_icon 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": {
    "generate_icon": {
      "limits": [
        {
          "counter": "generate_icon_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Nano Banana, apply this rule, and every generate_icon call is checked against it from then on.

FAQ

Questions about generate_icon

What does the generate_icon tool do? +

Generate app icons, favicons, and UI elements in multiple sizes and formats. It is categorised as a Write tool in the Nano Banana MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_icon? +

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

What risk level is generate_icon? +

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

Can I rate-limit generate_icon? +

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

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

generate_icon is provided by the Nano Banana MCP server (aeven-ai/mcp-nanobanana). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Nano Banana, and thousands of servers like it.

This server

All 8 Nano Banana tools →

Across the catalogue

generate_commit on MCP Server PR Pilot →generate_video_title on YouTube MCP Server →generate_devtools_report on Percepta MCP Server →generate_evidence_manifest on Android Forensics ADB MCP Server → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →