Open an application on the local macOS system
AI agents invoke remote_macos_open_application to trigger actions in MCP Remote macOS Control Server. 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.
Opening an application causes external software to execute on the remote system. The blast radius is high because an AI agent could launch any installed application (e.g., terminal, browser, malicious tools), leading to further compromise or unintended side effects. This falls squarely in Execute, as it initiates processes whose effects depend on which application is launched.
From the tool's definition 'Open an application on the local macOS system' — triggers execution of arbitrary applications on the remote macOS system
Documented attack patterns abuse exactly the kind of access remote_macos_open_application gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Remote macOS Control Server, and nothing reaches the server without passing your rules. This is the rule we recommend for remote_macos_open_application:
{
"version": "1",
"default": "deny",
"tools": {
"remote_macos_open_application": {
"limits": [
{
"counter": "remote_macos_open_application_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}remote_macos_open_application 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.
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Open an application on the local macOS system. It is categorised as a Execute tool in the MCP Remote macOS Control Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the MCP Remote macOS Control Server MCP server in PolicyLayer and add a rule for remote_macos_open_application: 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 MCP Remote macOS Control Server. Nothing to install.
remote_macos_open_application is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the remote_macos_open_application 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.
Set action: deny in the PolicyLayer policy for remote_macos_open_application. 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.
remote_macos_open_application is provided by the MCP Remote macOS Control Server MCP server (senseisven/mcp_macos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Remote macOS Control Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
8 MCP Remote macOS Control Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.