add_url_forward

THE RISK

Medium Risk

Why add_url_forward needs a policy

This tool creates new URL forwarding configurations, which is a Write operation (creates data reversibly). It is not Destructive since URL forwards can be deleted. It is not Execute because it does not run arbitrary code or commands—it configures domain routing.

From the tool's definition Tool name 'add_url_forward' and description 'Adds URL forwarding for a domain or subdomain' indicate creation of new URL forwarding rules, which is a reversible data modification operation.

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

POLICY

How to control add_url_forward

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 add_url_forward:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_url_forward": {
      "limits": [
        {
          "counter": "add_url_forward_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

add_url_forward stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. 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.

LIMIT 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 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. Write edit_dns_record_by_name_type Edits all DNS records matching a domain, subdomain (optional), and type. Corresponds to en

All 20 Porkbun MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about add_url_forward

What does the add_url_forward tool do? +

Adds URL forwarding for a domain or subdomain. It is categorised as a Write tool in the Porkbun MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_url_forward? +

Register the Porkbun MCP Server MCP server in PolicyLayer and add a rule for add_url_forward: 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 add_url_forward? +

add_url_forward is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit add_url_forward? +

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

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

add_url_forward 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 →