dns_propagation

SERVERMcp Nettools SOURCEaaronckj/mcp-nettools

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/aaronckj-mcp-nettools/dns-propagation.md

WHAT IT DOES

What dns_propagation does on Mcp Nettools

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

RISK

Why dns_propagation is rated Low

This tool performs DNS lookups and compares results across multiple public resolvers to verify propagation status. It retrieves and presents data with no side effects, no code execution, no data modification, and no destructive capability. The sole purpose is diagnostic query of publicly accessible DNS information.

From the tool's definition Tool queries DNS records from public resolvers and reports results; no modifications to any systems. Description explicitly states 'Check' and 'Reports records' — purely informational read operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs dns_propagation safely

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

dns_propagation Allowed

dns_propagation 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": {
    "dns_propagation": {}
  }
}

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

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

FAQ

Questions about dns_propagation

What does the dns_propagation tool do? +

Check DNS propagation across 4 major public resolvers (Google 8.8.8.8, Cloudflare 1.1.1.1, Quad9 9.9.9.9, OpenDNS 208.67.222.222). Reports records from each and whether they are consistent. Useful after DNS changes to verify global propagation. It is categorised as a Read tool in the Mcp Nettools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on dns_propagation? +

Register the Mcp Nettools MCP server in PolicyLayer and add a rule for dns_propagation: 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 Mcp Nettools. Nothing to install.

What risk level is dns_propagation? +

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

Can I rate-limit dns_propagation? +

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

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

dns_propagation is provided by the Mcp Nettools MCP server (aaronckj/mcp-nettools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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