node_file

A other tool on the GNS3 MCP server.

SERVERGNS3 MCP Server SOURCEchistokhinsv/gns3-mcp

Low RISK CLASS

Category Other

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade B, identity unverified Pull the record →

This record as markdown: /tools/chistokhinsv-gns3-mcp/node-file.md

WHAT IT DOES

What node_file does on GNS3 MCP Server

AI agents call node_file as a supporting operation in GNS3 MCP Server workflows.

RISK

Why node_file is rated Low

The description is empty, so the exact behavior cannot be determined. The name 'node_file' on a GNS3 server suggests file read/write operations on network node configurations, which could range from Read to Destructive depending on implementation. Given the ambiguity, defaulting to Other with low confidence. The severity is medium because file operations on network nodes could impact lab configurations if misused.

From the tool's definition Tool name is 'node_file' but description is empty/uninformative. Name suggests file operations on GNS3 nodes.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs node_file safely

PolicyLayer is an MCP gateway: it sits between your AI agents and GNS3 MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For node_file, this is the rule to start with:

node_file Rate-limited

node_file gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "node_file": {
      "limits": [
        {
          "counter": "node_file_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect GNS3 MCP Server, apply this rule, and every node_file call is checked against it from then on.

FAQ

Questions about node_file

What does the node_file tool do? +

node_file is a other tool on the GNS3 MCP Server MCP server. It is categorised as a Other tool in the GNS3 MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on node_file? +

Register the GNS3 MCP Server MCP server in PolicyLayer and add a rule for node_file: 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 GNS3 MCP Server. Nothing to install.

What risk level is node_file? +

node_file is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit node_file? +

Yes. Add a rate_limit block to the node_file 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.

How do I block node_file completely? +

Set action: deny in the PolicyLayer policy for node_file. 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.

What MCP server provides node_file? +

node_file is provided by the GNS3 MCP Server MCP server (chistokhinsv/gns3-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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