clear_unused_tags

A destructive tool on the Anki MCP server.

SERVERAnki SOURCE@arielbk/anki-mcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-arielbk-anki-mcp/clear-unused-tags.md

WHAT IT DOES

What clear_unused_tags does on Anki

AI agents call clear_unused_tags 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.

RISK

Why clear_unused_tags is rated Critical

Although the description is empty, the tool name strongly suggests this performs an irreversible deletion operation on Anki tags. Clearing unused tags cannot be easily undone and represents permanent data loss. This fits the Destructive category (irreversibly deletes or overwrites data).

From the tool's definition Tool name 'clear_unused_tags' contains 'clear', which typically indicates deletion or removal. The verb 'clear' in the context of tag management implies irreversible removal of tags that are no longer in use.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs clear_unused_tags safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Anki, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For clear_unused_tags, this is the rule to start with:

clear_unused_tags Hidden

clear_unused_tags is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "clear_unused_tags"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Anki, apply this rule, and every clear_unused_tags call is checked against it from then on.

FAQ

Questions about clear_unused_tags

What does the clear_unused_tags tool do? +

clear_unused_tags is a destructive tool on the Anki MCP server. 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.

How do I enforce a policy on clear_unused_tags? +

Register the Anki MCP server in PolicyLayer and add a rule for clear_unused_tags: 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.

What risk level is clear_unused_tags? +

clear_unused_tags is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit clear_unused_tags? +

Yes. Add a rate_limit block to the clear_unused_tags 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.

How do I block clear_unused_tags completely? +

Set action: deny in the PolicyLayer policy for clear_unused_tags. 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.

What MCP server provides clear_unused_tags? +

clear_unused_tags is provided by the Anki MCP server (@arielbk/anki-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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