Get S-parameter data (frequencies, magnitude, phase)
AI agents call vna_get_s_parameter 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 from a Vector Network Analyzer without altering any configuration, calibration, or state. S-parameters are passive observations of network behavior. The action is read-only: fetching frequencies, magnitude, and phase values. No data is created, modified, deleted, or executed.
From the tool's definition Tool name 'get_s_parameter' and description 'Get S-parameter data (frequencies, magnitude, phase)' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Get S-parameter data (frequencies, magnitude, phase). 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_get_s_parameter: 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_get_s_parameter 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_get_s_parameter 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_get_s_parameter. 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_get_s_parameter 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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