generate_banner · Claude-to-Gemini MCP Server MCP

WHAT IT DOES

What generate_banner does on Claude-to-Gemini MCP Server

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

WHY IT NEEDS A POLICY

Why generate_banner needs a policy

This tool generates image assets (marketing banners and social media images). It creates new content/files, which is a Write operation. It does not execute code, delete data, or involve financial transactions. Severity is medium because a misused agent could generate inappropriate or misleading marketing imagery at scale.

From the tool's definition Generate marketing banners and SNS images with platform-optimized sizes. Uses Nano Banana Pro for text + graphic composition.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_banner Rate-limited

generate_banner 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_banner": {
      "limits": [
        {
          "counter": "generate_banner_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 Claude-to-Gemini MCP Server, so you can run agents against it safely.

FAQ

Questions about generate_banner

What does the generate_banner tool do? +

Generate marketing banners and SNS images with platform-optimized sizes. Uses Nano Banana Pro for text + graphic composition. It is categorised as a Write tool in the Claude-to-Gemini MCP Server 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_banner? +

Register the Claude-to-Gemini MCP Server MCP server in PolicyLayer and add a rule for generate_banner: 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 Claude-to-Gemini MCP Server. Nothing to install.

What risk level is generate_banner? +

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

Can I rate-limit generate_banner? +

Yes. Add a rate_limit block to the generate_banner 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_banner completely? +

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

generate_banner is provided by the Claude-to-Gemini MCP Server MCP server (yoon-jongho/claude-to-gemini). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.