Start scanning ISM bands for devices (433MHz, 315MHz, 868MHz, 915MHz) using rtl_433
AI agents invoke ism_start_scanning to trigger actions in AetherLink SDR MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
This tool executes an external command/operation (rtl_433 scanner) that actively initiates hardware-based radio frequency scanning. While primarily for passive signal analysis, it triggers external operations whose effects depend on hardware configuration and network environment. It is Execute rather than Read because it initiates an active scanning process with external dependencies, not merely querying stored data.
From the tool's definition Tool name 'ism_start_scanning' and description 'Start scanning ISM bands for devices (433MHz, 315MHz, 868MHz, 915MHz) using rtl_433' indicates active initiation of radio signal scanning operations using external software (rtl_433).
Documented attack patterns abuse exactly the kind of access ism_start_scanning 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 ism_start_scanning:
{
"version": "1",
"default": "deny",
"tools": {
"ism_start_scanning": {
"limits": [
{
"counter": "ism_start_scanning_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}ism_start_scanning stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Start scanning ISM bands for devices (433MHz, 315MHz, 868MHz, 915MHz) using rtl_433. It is categorised as a Execute tool in the AetherLink SDR MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the AetherLink SDR MCP server in PolicyLayer and add a rule for ism_start_scanning: 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.
ism_start_scanning is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the ism_start_scanning 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 ism_start_scanning. 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.
ism_start_scanning 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.