Use NAPALM to retrieve device configurations (running, startup, or candidate).
AI agents call get_config to retrieve information from Nornir MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves configuration data from network devices using NAPALM without side effects. It falls under the Read category as it queries existing configurations (running, startup, or candidate) without creating, modifying, or deleting data. The blast radius of misuse is low—an agent could only access configuration information it should not see, not cause operational harm or data loss.
From the tool's definition Tool name 'get_config' and description 'retrieve device configurations' indicate a read-only operation that queries and returns configuration data without modifying network state.
Documented attack patterns abuse exactly the kind of access get_config gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Nornir MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_config:
{
"version": "1",
"default": "deny",
"tools": {
"get_config": {}
}
}get_config is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Use NAPALM to retrieve device configurations (running, startup, or candidate). It is categorised as a Read tool in the Nornir MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Nornir MCP Server MCP server in PolicyLayer and add a rule for get_config: 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 Nornir MCP Server. Nothing to install.
get_config 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_config 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_config. 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_config is provided by the Nornir MCP Server MCP server (yhvh-chen/nornir_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Nornir MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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26 Nornir MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.