diagnostic

ServermacOS Simulator MCP Server
CategoryRead

WHAT IT DOES

What diagnostic does on macOS Simulator MCP Server

AI agents call diagnostic to retrieve information from macOS Simulator MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why diagnostic needs a policy

The tool only reads and reports system status information (permissions, dependencies, performance metrics) without modifying any state. It is purely diagnostic/informational, returning a JSON report. Low severity as it only exposes system metadata.

From the tool's definition Run a comprehensive system health check and get detailed diagnostic information about the MCP server... Returns detailed JSON report with system status, warnings, and recommendations.

Documented attack patterns abuse exactly the kind of access diagnostic gives an agent:

POLICY

How to control diagnostic

PolicyLayer is an MCP gateway — it sits between your AI agents and macOS Simulator MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for diagnostic:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "diagnostic": {}
  }
}

diagnostic is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register macOS Simulator MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More macOS Simulator MCP Server tools

Destructive cleanup_screenshots Clean up old screenshots from temporary folder Execute wait Pause execution for a specified duration in milliseconds to allow time for UI updates, ani Execute wait_for_element Wait for specific text or UI element to appear on screen before continuing. Essential for Execute focus_window Bring a specific window to the foreground and make it the active/focused window using part Execute hover Hover the mouse over specific coordinates for a duration. Useful for triggering tooltips, Execute click Perform mouse clicks at precise screen coordinates with support for left, right, or middle Execute key_press Execute keyboard shortcuts and special key combinations essential for system navigation an Execute mouse_move Move the mouse cursor to precise screen coordinates without clicking. Useful for hover act

All 28 macOS Simulator MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about diagnostic

What does the diagnostic tool do? +

Run a comprehensive system health check and get detailed diagnostic information about the MCP server. This tool provides essential system status including permissions (screen recording, accessibility), dependencies, and performance metrics. Use this first when troubleshooting issues or before starting automation workflows to ensure all required permissions and components are properly configured. Returns detailed JSON report with system status, warnings, and recommendations. It is categorised as a Read tool in the macOS Simulator MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on diagnostic? +

Register the macOS Simulator MCP Server MCP server in PolicyLayer and add a rule for diagnostic: 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 macOS Simulator MCP Server. Nothing to install.

What risk level is diagnostic? +

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

Can I rate-limit diagnostic? +

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

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

diagnostic is provided by the macOS Simulator MCP Server MCP server (ohqay/mac-commander). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every macOS Simulator MCP Server tool call.

Start from macOS Simulator MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →

Free to start. No card required.

28 macOS Simulator MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.