Purge cache by URL, tag, host, prefix, or everything
Risk signalsCan purge entire CDN cache causing load spike
Part of the MCP Cloudflare server.
Free to start. No card required.
AI agents may call purge_cache to permanently remove or destroy resources in MCP Cloudflare. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. PolicyLayer blocks destructive tools by default and requires explicit human approval before enabling them.
Without a policy, an AI agent could call purge_cache in a loop, permanently destroying resources in MCP Cloudflare. There is no undo for destructive operations. PolicyLayer blocks this tool by default and only allows it when a human explicitly approves the action.
Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.
{
"version": "1",
"default": "deny",
"hide": [
"purge_cache"
]
}See the full MCP Cloudflare policy for all 14 tools.
These attack patterns abuse exactly the kind of access purge_cache gives an agent. Each links to the full case and the policy that stops it:
Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.
Purge cache by URL, tag, host, prefix, or everything. It is categorised as a Destructive tool in the MCP Cloudflare MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the MCP Cloudflare MCP server in PolicyLayer and add a rule for 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 MCP Cloudflare. Nothing to install.
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 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 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.
purge_cache is provided by the MCP Cloudflare MCP server (pypi:mcp-cloudflare-crunchtools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 14 MCP Cloudflare tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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