list_domains

THE RISK

Low Risk

Why list_domains needs a policy

list_domains performs a simple data retrieval operation on the user's domain inventory. It does not create, modify, delete, or execute any actions. The blast radius of misuse is minimal—an attacker gains visibility into domain ownership but cannot alter or compromise any resources. This is clearly in the Read category with low severity.

From the tool's definition Tool description states 'Retrieves a list of domains' — a query operation with no modification or side effects.

Documented attack patterns abuse exactly the kind of access list_domains gives an agent:

POLICY

How to control list_domains

PolicyLayer is an MCP gateway — it sits between your AI agents and Porkbun MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_domains:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_domains": {}
  }
}

list_domains is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Porkbun MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Porkbun MCP Server tools

Destructive delete_dns_record Removes a specific DNS record using its ID. Destructive delete_dns_record_by_name_type Deletes all DNS records matching a domain, subdomain (optional), and type. Corresponds to Destructive delete_dnssec_record Deletes a DNSSEC record associated with the domain at the registry by Key Tag. Destructive delete_url_forward Deletes a URL forward record for a domain by its ID. Write add_url_forward Adds URL forwarding for a domain or subdomain. Write create_dns_record Adds a new DNS record to a specified domain. Write create_dnssec_record Creates a DNSSEC record at the registry for the domain. Write edit_dns_record Modifies an existing DNS record using its ID.

All 20 Porkbun MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_domains

What does the list_domains tool do? +

Retrieves a list of domains in the Porkbun account. It is categorised as a Read tool in the Porkbun MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_domains? +

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

What risk level is list_domains? +

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

Can I rate-limit list_domains? +

Yes. Add a rate_limit block to the list_domains 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_domains completely? +

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

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

Enforce policy on every Porkbun MCP Server tool call.

Start from Porkbun MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →