Delete a subscriber list
AI agents call delete_list to permanently remove resources in Campaign Monitor MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool performs an irreversible action that destroys data (a complete subscriber list). According to the classification rules, Destructive is the appropriate category for actions that delete or overwrite data and cannot be undone.
From the tool's definition Tool name 'delete_list' combined with description 'Delete a subscriber list' indicates irreversible deletion of data. Deletion operations cannot be undone and result in permanent data loss.
Attacks that exploit this kind of access
Delete a subscriber list. It is categorised as a Destructive tool in the Campaign Monitor MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Campaign Monitor MCP server in PolicyLayer and add a rule for delete_list: 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 Campaign Monitor MCP. Nothing to install.
delete_list 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 delete_list 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 delete_list. 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.
delete_list is provided by the Campaign Monitor MCP server (pauliowest/cmon-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.
Teams ship this data inside their own products. See what a licence covers →