send-notification · MCPing MCP: Risk & Policy

WHAT IT DOES

What send-notification does on MCPing

AI agents invoke send-notification to trigger actions in MCPing. 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.

WHY IT NEEDS A POLICY

Why send-notification needs a policy

Sending a desktop notification is an external operation that interacts with the macOS notification system. It is not a simple data read or write; it executes a system action that surfaces UI to the user, could be used for phishing/social engineering, or spam the user with misleading alerts.

From the tool's definition 'Send a desktop notification on macOS with icon, image, and sound customization' — triggers an external operation (system-level desktop notification) with user-visible side effects

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send-notification Rate-limited

send-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": {
    "send-notification": {
      "limits": [
        {
          "counter": "send-notification_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches MCPing, so you can run agents against it safely.

FAQ

Questions about send-notification

What does the send-notification tool do? +

Send a desktop notification on macOS with icon, image, and sound customization. It is categorised as a Execute tool in the MCPing MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on send-notification? +

Register the MCPing MCP server in PolicyLayer and add a rule for send-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 MCPing. Nothing to install.

What risk level is send-notification? +

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

Can I rate-limit send-notification? +

Yes. Add a rate_limit block to the send-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 send-notification completely? +

Set action: deny in the PolicyLayer policy for send-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 send-notification? +

send-notification is provided by the MCPing MCP server (toolprint/mcping-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.