AI agents call spectrum_scan to retrieve information from AetherLink SDR MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The spectrum_scan tool retrieves information about signals present in a given frequency range. This is a read-only operation that observes radio spectrum without causing any side effects, modifications, or irreversible actions. Scanning for signals is passive monitoring and data collection, analogous to using a spectrum analyzer in passive mode.
From the tool's definition Tool name 'spectrum_scan' and description 'Scan a frequency range for signals' indicate passive signal detection and analysis without transmission or modification of radio state.
Documented attack patterns abuse exactly the kind of access spectrum_scan gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and AetherLink SDR MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for spectrum_scan:
{
"version": "1",
"default": "deny",
"tools": {
"spectrum_scan": {}
}
}spectrum_scan is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Scan a frequency range for signals. It is categorised as a Read tool in the AetherLink SDR MCP MCP Server, which means it retrieves data without modifying state.
Register the AetherLink SDR MCP server in PolicyLayer and add a rule for spectrum_scan: 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 AetherLink SDR MCP. Nothing to install.
spectrum_scan 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 spectrum_scan 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 spectrum_scan. 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.
spectrum_scan is provided by the AetherLink SDR MCP server (n-erickson/aetherlink-sdr-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from AetherLink SDR MCP, 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.
26 AetherLink SDR MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.