push_notify · Garza Home MCP: Risk & Policy

WHAT IT DOES

What push_notify does on Garza Home MCP

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

WHY IT NEEDS A POLICY

Why push_notify needs a policy

This tool creates/sends data (a notification) with reversible effects—notifications can be dismissed or deleted, and the action does not destroy data or execute arbitrary code. It is Write rather than Execute because it performs a well-defined, bounded operation (sending a specific notification) rather than running arbitrary commands.

From the tool's definition Tool name 'push_notify' and description 'Send push notification' indicate creation of a new notification message that is persisted and delivered to user devices.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

push_notify Rate-limited

push_notify 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": {
    "push_notify": {
      "limits": [
        {
          "counter": "push_notify_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 Garza Home MCP, so you can run agents against it safely.

FAQ

Questions about push_notify

What does the push_notify tool do? +

Send push notification. It is categorised as a Write tool in the Garza Home MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on push_notify? +

Register the Garza Home MCP server in PolicyLayer and add a rule for push_notify: 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 Garza Home MCP. Nothing to install.

What risk level is push_notify? +

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

Can I rate-limit push_notify? +

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

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

push_notify is provided by the Garza Home MCP server (itsablabla/garza-home-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.