reverse_dns_lookup

Perform reverse DNS lookup (IP to hostname).

SERVERGadgetHumans API Hub SOURCEpypi:gadgethumans-api-hub-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/io-github-scotia1973-bot-api-hub/reverse-dns-lookup.md

WHAT IT DOES

What reverse_dns_lookup does on GadgetHumans API Hub

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

RISK

Why reverse_dns_lookup is rated Low

Reverse DNS lookup is a read-only network query that retrieves existing DNS records. It does not create, modify, delete, or execute anything—it simply returns publicly available DNS information. The severity is low because DNS lookups are non-destructive and the information retrieved is typically already public. This falls clearly into the Read category.

From the tool's definition The tool 'reverse_dns_lookup' performs a DNS lookup operation that retrieves hostname information from an IP address. This is a purely informational query with no side effects, no data modification, and no execution of arbitrary code.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs reverse_dns_lookup safely

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

reverse_dns_lookup Allowed

reverse_dns_lookup 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": {
    "reverse_dns_lookup": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect GadgetHumans API Hub, apply this rule, and every reverse_dns_lookup call is checked against it from then on.

FAQ

Questions about reverse_dns_lookup

What does the reverse_dns_lookup tool do? +

Perform reverse DNS lookup (IP to hostname). It is categorised as a Read tool in the GadgetHumans API Hub MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on reverse_dns_lookup? +

Register the GadgetHumans API Hub MCP server in PolicyLayer and add a rule for reverse_dns_lookup: 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 GadgetHumans API Hub. Nothing to install.

What risk level is reverse_dns_lookup? +

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

Can I rate-limit reverse_dns_lookup? +

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

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

reverse_dns_lookup is provided by the GadgetHumans API Hub MCP server (pypi:gadgethumans-api-hub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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