install_spf_records

THE RISK

Medium Risk

Why install_spf_records needs a policy

This tool modifies DNS SPF records across all domains, which is a write operation—it creates or updates records that can be changed again. While not destructive (records can be removed or corrected), the impact is high because misconfigured SPF records can break email authentication for all domains, causing legitimate email to be rejected and potentially enabling spoofing if configured incorrectly.

From the tool's definition Tool name 'install_spf_records' and description 'Install/update SPF records for all domains' indicate creation and modification of DNS records (SPF). The word 'install/update' confirms reversible data modification rather than deletion.

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

POLICY

How to control install_spf_records

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

policy.json

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

install_spf_records 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 cPanel 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

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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 install_spf_records

What does the install_spf_records tool do? +

Install/update SPF records for all domains. It is categorised as a Write tool in the cPanel 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 install_spf_records? +

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

What risk level is install_spf_records? +

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

Can I rate-limit install_spf_records? +

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

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

install_spf_records is provided by the cPanel MCP Server MCP server (0xhayd3n/cpanel-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 cPanel MCP Server tool call.

Start from cPanel 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 →