cf_dns_update

THE RISK

Medium Risk

Why cf_dns_update needs a policy

This tool modifies DNS configuration by patching records with parameters like type, name, content, proxied status, and TTL. DNS record modification is a Write operation—it changes infrastructure configuration reversibly (records can be patched again or reverted), but carries high severity due to potential for service disruption, domain hijacking, or traffic redirection if misused by an AI agent.

From the tool's definition Tool description states 'Patch a DNS record. Pass any of: type, name, content, proxied, ttl.' The verb 'Patch' indicates modification of existing DNS records, which is reversible but impactful.

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

POLICY

How to control cf_dns_update

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

policy.json

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

cf_dns_update 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 Odoo Claude MCP — 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 cf_dns_update

What does the cf_dns_update tool do? +

Patch a DNS record. Pass any of: type, name, content, proxied, ttl. It is categorised as a Write tool in the Odoo Claude MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on cf_dns_update? +

Register the Odoo Claude MCP server in PolicyLayer and add a rule for cf_dns_update: 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 Odoo Claude MCP. Nothing to install.

What risk level is cf_dns_update? +

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

Can I rate-limit cf_dns_update? +

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

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

cf_dns_update is provided by the Odoo Claude MCP server (rosenvladimirov/odoo-claude-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Odoo Claude MCP tool call.

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

CHECK YOUR STACK →