mcp_call_gpu_available
AI agents call mcp_call_gpu_available to retrieve information from Mcp My Mac without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to check or report GPU availability on the system—a read operation that retrieves system state information without side effects. The context of a Mac debugging/setup tool and sibling diagnostic tools reinforces this as information-gathering. Low severity because misuse would only expose harmless hardware information.
From the tool's definition Tool name 'gpu_available' suggests a query that checks GPU availability status; no description provided but naming convention indicates data retrieval rather than modification or execution.
Attacks that exploit this kind of access
mcp_call_gpu_available. It is categorised as a Read tool in the Mcp My Mac MCP Server, which means it retrieves data without modifying state.
Register the Mcp My Mac MCP server in PolicyLayer and add a rule for mcp_call_gpu_available: 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 My Mac. Nothing to install.
mcp_call_gpu_available is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the mcp_call_gpu_available 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 mcp_call_gpu_available. 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.
mcp_call_gpu_available is provided by the Mcp My Mac MCP server (zhongmingyuan/mcp-my-mac). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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