get_rule

Get information about a specific firewall rule.

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/get-rule.md

WHAT IT DOES

What get_rule does on Vultr MCP

AI agents call get_rule 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 get_rule is rated Low

This tool retrieves and queries firewall rule data without creating, modifying, deleting, or executing any actions. It has no side effects and falls squarely within the Read category. Severity is low because accessing firewall rule metadata poses minimal risk even if exposed to misuse—it reveals configuration information but does not alter infrastructure.

From the tool's definition Tool name 'get_rule' with description 'Get information about a specific firewall rule' indicates a retrieval operation with no modification or execution of rules.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

get_rule Allowed

get_rule 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": {
    "get_rule": {}
  }
}

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 get_rule call is checked against it from then on.

FAQ

Questions about get_rule

What does the get_rule tool do? +

Get information about a specific firewall rule. 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 get_rule? +

Register the Vultr MCP server in PolicyLayer and add a rule for get_rule: 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 get_rule? +

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

Can I rate-limit get_rule? +

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

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

get_rule 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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