show_notification

Display a macOS system notification with optional title, subtitle, and sound.

SERVERAirMCP SOURCEairmcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/heznpc-airmcp/show-notification.md

WHAT IT DOES

What show_notification does on AirMCP

AI agents invoke show_notification to trigger actions in AirMCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why show_notification is rated High

This tool triggers an external UI operation (displaying a system notification) on the host operating system. It doesn't read or write persistent data, but it does interact with the macOS notification system — an external side-effectful operation. Misuse is limited (e.g., spamming notifications or social engineering the user), making severity low.

From the tool's definition Display a macOS system notification with optional title, subtitle, and sound

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs show_notification safely

PolicyLayer is an MCP gateway: it sits between your AI agents and AirMCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For show_notification, this is the rule to start with:

show_notification Rate-limited

show_notification stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "show_notification": {
      "limits": [
        {
          "counter": "show_notification_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about show_notification

What does the show_notification tool do? +

Display a macOS system notification with optional title, subtitle, and sound. It is categorised as a Execute tool in the AirMCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on show_notification? +

Register the Air MCP server in PolicyLayer and add a rule for show_notification: 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 AirMCP. Nothing to install.

What risk level is show_notification? +

show_notification is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit show_notification? +

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

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

show_notification is provided by the Air MCP server (airmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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