Get list of all unknown/unverified devices on the network.
AI agents call get_unknown_devices to retrieve information from Network Scanner MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries network device data but does not modify, delete, or execute actions on those devices. It performs passive reconnaissance by listing unknown devices.
From the tool's definition Tool name 'get_unknown_devices' and description 'Get list of all unknown/unverified devices on the network' indicate retrieval of network device information without modification.
Attacks that exploit this kind of access
Get list of all unknown/unverified devices on the network. It is categorised as a Read tool in the Network Scanner MCP MCP Server, which means it retrieves data without modifying state.
Register the Network Scanner MCP server in PolicyLayer and add a rule for get_unknown_devices: 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 Network Scanner MCP. Nothing to install.
get_unknown_devices 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 get_unknown_devices 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 get_unknown_devices. 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.
get_unknown_devices is provided by the Network Scanner MCP server (marc-shade/network-scanner-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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