Delete an address book
Part of the Nextcloud MCP Server server.
Free to start. No card required.
AI agents may call nextcloud_contacts_delete_addressbook to permanently remove or destroy resources in Nextcloud MCP Server. 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 nextcloud_contacts_delete_addressbook in a loop, permanently destroying resources in Nextcloud MCP Server. 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": [
"nextcloud_contacts_delete_addressbook"
]
}See the full Nextcloud MCP Server policy for all 30 tools.
These attack patterns abuse exactly the kind of access nextcloud_contacts_delete_addressbook 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.
Delete an address book. It is categorised as a Destructive tool in the Nextcloud MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Nextcloud MCP Server MCP server in PolicyLayer and add a rule for nextcloud_contacts_delete_addressbook: 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 Nextcloud MCP Server. Nothing to install.
nextcloud_contacts_delete_addressbook 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 nextcloud_contacts_delete_addressbook 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 nextcloud_contacts_delete_addressbook. 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.
nextcloud_contacts_delete_addressbook is provided by the Nextcloud MCP Server MCP server (hithereiamaliff/mcp-nextcloud). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 30 Nextcloud MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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