preview_cloudflare_dns

Preview what DNS records will be created, merged, or replaced for connected Cloudflare domains. Run this before apply to see what will change.

SERVERTrekMail MCP Server SOURCEtrekmail/mcp-server

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/trekmail-mcp-server/preview-cloudflare-dns.md

WHAT IT DOES

What preview_cloudflare_dns does on TrekMail MCP Server

AI agents call preview_cloudflare_dns to retrieve information from TrekMail 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 preview_cloudflare_dns is rated Low

This tool only previews/shows what would happen without making any actual changes. It is a read-only operation that retrieves a diff of DNS changes, explicitly designed to be run before the actual apply step.

From the tool's definition Preview what DNS records will be created, merged, or replaced... Run this before apply to see what will change.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs preview_cloudflare_dns safely

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

preview_cloudflare_dns Allowed

preview_cloudflare_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": {
    "preview_cloudflare_dns": {}
  }
}

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

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

FAQ

Questions about preview_cloudflare_dns

What does the preview_cloudflare_dns tool do? +

Preview what DNS records will be created, merged, or replaced for connected Cloudflare domains. Run this before apply to see what will change. It is categorised as a Read tool in the TrekMail MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on preview_cloudflare_dns? +

Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for preview_cloudflare_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 TrekMail MCP Server. Nothing to install.

What risk level is preview_cloudflare_dns? +

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

Can I rate-limit preview_cloudflare_dns? +

Yes. Add a rate_limit block to the preview_cloudflare_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 preview_cloudflare_dns completely? +

Set action: deny in the PolicyLayer policy for preview_cloudflare_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 preview_cloudflare_dns? +

preview_cloudflare_dns is provided by the TrekMail MCP Server MCP server (trekmail/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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