Purge CloudFlare cache
AI agents call cf_purge_cache to permanently remove resources in Cargoshipper — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Purging a CDN cache irreversibly removes all cached content, forcing re-fetching from origin. This cannot be undone and can cause significant performance degradation, increased origin load, and temporary service disruption at scale. The word 'purge' explicitly signals an irreversible destructive operation.
From the tool's definition 'Purge CloudFlare cache' — 'purge' indicates irreversible removal of cached content
Attacks that exploit this kind of access
Purge CloudFlare cache. It is categorised as a Destructive tool in the Cargoshipper MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Cargoshipper MCP server in PolicyLayer and add a rule for cf_purge_cache: 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 Cargoshipper. Nothing to install.
cf_purge_cache is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the cf_purge_cache 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.
Set action: deny in the PolicyLayer policy for cf_purge_cache. 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.
cf_purge_cache is provided by the Cargoshipper MCP server (scarr7981/cargoshipper-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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