create_firewall

Create a new firewall

SERVERLinode MCP Server SOURCEtakashito/linode-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/takashito-linode-mcp-server/create-firewall.md

WHAT IT DOES

What create_firewall does on Linode MCP Server

AI agents use create_firewall to create or update resources in Linode MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Linode MCP Server environment.

RISK

Why create_firewall is rated Medium

Creating a firewall is a reversible write operation that adds a new resource to the infrastructure. While it has security implications (affects network access policies), the action itself is not destructive or financial.

From the tool's definition Tool name is 'create_firewall' and description states 'Create a new firewall'. The verb 'create' indicates a Write operation that creates a new network security resource.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_firewall safely

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

create_firewall Rate-limited

create_firewall stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_firewall": {
      "limits": [
        {
          "counter": "create_firewall_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about create_firewall

What does the create_firewall tool do? +

Create a new firewall. It is categorised as a Write tool in the Linode MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_firewall? +

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

What risk level is create_firewall? +

create_firewall is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_firewall? +

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

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

create_firewall is provided by the Linode MCP Server MCP server (takashito/linode-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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