node

A execute tool on the GNS3 MCP server.

SERVERGNS3 MCP Server SOURCEchistokhinsv/gns3-mcp

High RISK CLASS

Category Execute

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.md

WHAT IT DOES

What node does on GNS3 MCP Server

AI agents invoke node to trigger actions in GNS3 MCP Server. 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.

RISK

Why node is rated High

GNS3 node management typically involves creating, starting, stopping, or deleting virtual network nodes — spanning Write, Execute, and potentially Destructive operations. Given the sibling tools (console, link, node_file, project) and the server's purpose of network lab automation, a 'node' tool likely manages network node lifecycle including execution of network devices.

From the tool's definition Tool name is 'node' on a GNS3 server that controls network lab automation including nodes, consoles, and SSH. Description is empty/uninformative.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs node 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, this is the rule to start with:

node Rate-limited

node 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "node": {
      "limits": [
        {
          "counter": "node_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT 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 call is checked against it from then on.

FAQ

Questions about node

What does the node tool do? +

node is a execute tool on the GNS3 MCP Server MCP server. It is categorised as a Execute tool in the GNS3 MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on node? +

Register the GNS3 MCP Server MCP server in PolicyLayer and add a rule for node: 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? +

node is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit node? +

Yes. Add a rate_limit block to the node 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 completely? +

Set action: deny in the PolicyLayer policy for node. 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? +

node 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

More on GNS3 MCP Server, and thousands of servers like it.

This server

All 16 GNS3 MCP Server tools → High-risk tools on this server →

Across the catalogue

All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →