Delete a note directly by note ID. Idempotent when already missing.
AI agents call delete_note to permanently remove resources in Anki — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly removes data (Anki notes) from the user's study material. While described as idempotent, the primary function is destructive deletion with no undo capability once executed. The blast radius is high if an AI agent misuses it—entire notes and their associated cards could be lost. This is clearly Destructive rather than Write (which handles reversible modifications).
From the tool's definition delete_note deletes a note directly by note ID
Attacks that exploit this kind of access
Delete a note directly by note ID. Idempotent when already missing. It is categorised as a Destructive tool in the Anki MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Anki MCP server in PolicyLayer and add a rule for delete_note: 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 Anki. Nothing to install.
delete_note 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_note 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_note. 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_note is provided by the Anki MCP server (yama662607/anki-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 →