arvan_net_reverse_dns

Reverse-resolve an IP address to a hostname (PTR).

SERVERArvanCloud MCP Server SOURCEdwin-gharibi/arvancloud-mcp

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/dwin-gharibi-arvancloud-mcp/arvan-net-reverse-dns.md

WHAT IT DOES

What arvan_net_reverse_dns does on ArvanCloud MCP Server

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

RISK

Why arvan_net_reverse_dns is rated Low

This tool performs a DNS reverse lookup, which queries existing DNS records and returns data without creating, modifying, deleting, or executing any operations. It is purely informational retrieval, making it a Read category tool with low severity since DNS enumeration alone poses minimal risk compared to other capabilities on this platform.

From the tool's definition Tool name 'arvan_net_reverse_dns' and description 'Reverse-resolve an IP address to a hostname (PTR)' indicate a DNS query operation that retrieves hostname information from an IP address.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs arvan_net_reverse_dns safely

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

arvan_net_reverse_dns Allowed

arvan_net_reverse_dns 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": {
    "arvan_net_reverse_dns": {}
  }
}

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

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

FAQ

Questions about arvan_net_reverse_dns

What does the arvan_net_reverse_dns tool do? +

Reverse-resolve an IP address to a hostname (PTR). It is categorised as a Read tool in the ArvanCloud MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on arvan_net_reverse_dns? +

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

What risk level is arvan_net_reverse_dns? +

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

Can I rate-limit arvan_net_reverse_dns? +

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

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

arvan_net_reverse_dns is provided by the ArvanCloud MCP Server MCP server (dwin-gharibi/arvancloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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