list_firewall_rules

List firewall rules for a load balancer.

SERVERVultr MCP SOURCErsp2k/mcp-vultr

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/rsp2k-mcp-vultr/list-firewall-rules.md

WHAT IT DOES

What list_firewall_rules does on Vultr MCP

AI agents call list_firewall_rules to retrieve information from Vultr MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_firewall_rules is rated Low

This tool queries and returns existing firewall rules without creating, modifying, deleting, or executing any actions. It is a pure read operation with no side effects, fitting the Read category. The severity is low because retrieving firewall configuration information poses minimal risk even if accessed by an unauthorized agent.

From the tool's definition Tool name 'list_firewall_rules' and description 'List firewall rules for a load balancer' indicate a retrieval operation with no modification or execution of infrastructure.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_firewall_rules safely

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

list_firewall_rules Allowed

list_firewall_rules is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_firewall_rules": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about list_firewall_rules

What does the list_firewall_rules tool do? +

List firewall rules for a load balancer. It is categorised as a Read tool in the Vultr MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_firewall_rules? +

Register the Vultr MCP server in PolicyLayer and add a rule for list_firewall_rules: 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 Vultr MCP. Nothing to install.

What risk level is list_firewall_rules? +

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

Can I rate-limit list_firewall_rules? +

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

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

list_firewall_rules is provided by the Vultr MCP server (rsp2k/mcp-vultr). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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