Get connection health metrics
AI agents call vnc_get_connection_health to retrieve information from VNC MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves monitoring/diagnostic information about an existing VNC connection. It performs a read-only query of health metrics with no side effects, no code execution, no data modification, and no destructive capability. The low severity reflects that misuse by an AI agent would only expose connection diagnostics, not enable control or damage.
From the tool's definition Tool name 'vnc_get_connection_health' and description 'Get connection health metrics' indicate a retrieval operation that queries connection status without modifying, executing operations, or affecting system state.
Attacks that exploit this kind of access
Get connection health metrics. It is categorised as a Read tool in the VNC MCP Server MCP Server, which means it retrieves data without modifying state.
Register the VNC MCP Server MCP server in PolicyLayer and add a rule for vnc_get_connection_health: 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 VNC MCP Server. Nothing to install.
vnc_get_connection_health 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 vnc_get_connection_health 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 vnc_get_connection_health. 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.
vnc_get_connection_health is provided by the VNC MCP Server MCP server (volkan-m/vnc-mcp-server). 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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