Measure insertion loss (S21) at specific frequency
AI agents call vna_measure_insertion_loss to retrieve information from Copper Mountain Vna without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves measurement data (S21 parameter, insertion loss) from a Vector Network Analyzer. The verb 'measure' implies data acquisition with no side effects, configuration changes, or irreversible actions. It fits the Read category: retrieves or queries data with no side effects.
From the tool's definition Tool name 'vna_measure_insertion_loss' and description 'Measure insertion loss (S21) at specific frequency' indicate a measurement operation that queries an instrument's data without modifying its state or configuration.
Attacks that exploit this kind of access
Measure insertion loss (S21) at specific frequency. It is categorised as a Read tool in the Copper Mountain Vna MCP Server, which means it retrieves data without modifying state.
Register the Copper Mountain Vna MCP server in PolicyLayer and add a rule for vna_measure_insertion_loss: 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 Copper Mountain Vna. Nothing to install.
vna_measure_insertion_loss 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 vna_measure_insertion_loss 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 vna_measure_insertion_loss. 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.
vna_measure_insertion_loss is provided by the Copper Mountain Vna MCP server (rfingadam/copper-mountain-vna-mcp). 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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