hello

A simple hello world tool

SERVERNano Banana SOURCEaeven-ai/mcp-nanobanana

Low RISK CLASS

Category Other

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/hello.md

WHAT IT DOES

What hello does on Nano Banana

AI agents call hello as a supporting operation in Nano Banana workflows.

RISK

Why hello is rated Low

This is a diagnostic/greeting tool with no meaningful side effects. It does not read, write, execute, or delete data, nor does it involve financial operations. It is a standard 'hello world' test tool.

From the tool's definition A simple hello world tool

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hello 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 hello, this is the rule to start with:

hello Rate-limited

hello gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hello": {
      "limits": [
        {
          "counter": "hello_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about hello

What does the hello tool do? +

A simple hello world tool. It is categorised as a Other tool in the Nano Banana MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on hello? +

Register the Nano Banana MCP server in PolicyLayer and add a rule for hello: 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 hello? +

hello is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit hello? +

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

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

hello 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

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Guides

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