# hello

A simple hello world tool

Agent View of the PolicyLayer registry record for `hello`. HTML page: https://policylayer.com/tools/aeven-ai-mcp-nanobanana/hello

## Facts

- Tool: `hello`
- Server: Nano Banana (`aeven-ai/mcp-nanobanana`) — https://policylayer.com/tools/aeven-ai-mcp-nanobanana.md
- Homepage: https://github.com/Aeven-AI/mcp-nanobanana
- Risk category: Other (Low risk)
- Registry record: grade B, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "hello",
    "arguments": {}
  }
}
```

## 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 own definition: "A simple hello world tool"

## Use case

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

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Nano Banana:

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

## Other tools on Nano Banana (7)

- `edit_image` — Write — https://policylayer.com/tools/aeven-ai-mcp-nanobanana/edit-image.md
- `generate_diagram` — Write — https://policylayer.com/tools/aeven-ai-mcp-nanobanana/generate-diagram.md
- `generate_icon` — Write — https://policylayer.com/tools/aeven-ai-mcp-nanobanana/generate-icon.md
- `generate_image` — Write — https://policylayer.com/tools/aeven-ai-mcp-nanobanana/generate-image.md
- `generate_pattern` — Write — https://policylayer.com/tools/aeven-ai-mcp-nanobanana/generate-pattern.md
- `generate_story` — Write — https://policylayer.com/tools/aeven-ai-mcp-nanobanana/generate-story.md
- `restore_image` — Write — https://policylayer.com/tools/aeven-ai-mcp-nanobanana/restore-image.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=aeven-ai-mcp-nanobanana · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/aeven-ai-mcp-nanobanana