purge_cdn_zone

THE RISK

Critical Risk

Why purge_cdn_zone needs a policy

The 'purge' operation removes cached content from a CDN zone, which is an irreversible action that cannot be undone. While not data deletion per se, it destroys the cached state and forces regeneration, making it destructive in nature. The broad scope ('all cached content') and potential service impact (cache miss spike, performance degradation) justify 'high' severity.

From the tool's definition Tool name 'purge_cdn_zone' and description 'Purge all cached content from a CDN zone' explicitly indicate irreversible removal of cached data.

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

POLICY

How to control purge_cdn_zone

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

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "purge_cdn_zone"
  ]
}

purge_cdn_zone disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

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

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Vultr MCP tools

Destructive delete Delete a block storage volume. Destructive delete_bare_metal_server Delete a bare metal server. Destructive delete_cdn_ssl_certificate Remove SSL certificate from a CDN zone. Destructive delete_cdn_zone Delete a CDN zone. Destructive delete_collection delete_collection Destructive delete_connection_pool Delete a connection pool. Destructive delete_dns_domain Delete a DNS domain and ALL its associated records Destructive delete_dns_record Delete a specific DNS record

All 284 Vultr MCP tools →

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Go deeper

Critical-risk tools in Vultr MCP → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about purge_cdn_zone

What does the purge_cdn_zone tool do? +

Purge all cached content from a CDN zone. It is categorised as a Destructive tool in the Vultr MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on purge_cdn_zone? +

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

What risk level is purge_cdn_zone? +

purge_cdn_zone is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit purge_cdn_zone? +

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

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

purge_cdn_zone is provided by the Vultr MCP server (rsp2k/mcp-vultr). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Vultr MCP tool call.

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

CHECK YOUR STACK →