batch_process · Nano Banana MCP Server MCP: Risk & Policy

WHAT IT DOES

What batch_process does on Nano Banana MCP Server

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

WHY IT NEEDS A POLICY

Why batch_process needs a policy

This tool modifies multiple images in batch (resize, format conversion, renaming) across entire directories. These are write operations that alter existing files. While potentially impactful due to the bulk nature (entire directories), the operations described (resize, convert, rename) are generally reversible if originals are preserved, placing it in Write rather than Destructive.

From the tool's definition Apply resize, format conversion, and naming patterns to entire directories

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

batch_process Rate-limited

batch_process 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": {
    "batch_process": {
      "limits": [
        {
          "counter": "batch_process_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 MCP Server, so you can run agents against it safely.

FAQ

Questions about batch_process

What does the batch_process tool do? +

Process multiple images at once. Apply resize, format conversion, and naming patterns to entire directories. It is categorised as a Write tool in the Nano Banana 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 batch_process? +

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

What risk level is batch_process? +

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

Can I rate-limit batch_process? +

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

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

batch_process is provided by the Nano Banana MCP Server MCP server (lyalindotcom/nano-banana-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.