list_tlds

List top-level domains (TLDs) including generic, country-code, and sponsored TLDs. Filter by type or manager.

SERVERCloudflare SOURCEhttps://builds.mcp.cloudflare.com/sse

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade D, identity verified Pull the record →

This record as markdown: /tools/cloudflare/list-tlds.md

WHAT IT DOES

What list_tlds does on Cloudflare

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

RISK

Why list_tlds is rated Low

This tool retrieves and queries a static list of top-level domains with optional filtering. It has no side effects, creates no data, executes no code, and cannot modify or delete anything. It is a pure read operation with minimal security risk even if misused by an AI agent.

From the tool's definition Tool name is 'list_tlds' and description states 'List top-level domains (TLDs)' with filtering options. No modification, deletion, or execution capability is described.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_tlds safely

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

list_tlds Allowed

list_tlds 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": {
    "list_tlds": {}
  }
}

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

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

FAQ

Questions about list_tlds

What does the list_tlds tool do? +

List top-level domains (TLDs) including generic, country-code, and sponsored TLDs. Filter by type or manager. It is categorised as a Read tool in the Cloudflare MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_tlds? +

Register the Cloudflare MCP server in PolicyLayer and add a rule for list_tlds: 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 Cloudflare. Nothing to install.

What risk level is list_tlds? +

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

Can I rate-limit list_tlds? +

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

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

list_tlds is provided by the Cloudflare MCP server (https://builds.mcp.cloudflare.com/sse). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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