clear_icon_cache

SERVERNitrostack SOURCEnitrocloudofficial/nitrostack

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/nitrostack/clear-icon-cache.md

WHAT IT DOES

What clear_icon_cache does on Nitrostack

AI agents call clear_icon_cache to permanently remove resources in Nitrostack, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why clear_icon_cache is rated Critical

Irreversibly clears system cache data; cannot be undone once executed.

From the tool's definition Clears the Windows icon cache and rebuilds it

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs clear_icon_cache safely

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

clear_icon_cache Hidden

clear_icon_cache 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_icon_cache"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about clear_icon_cache

What does the clear_icon_cache tool do? +

Clears the Windows icon cache and rebuilds it on next Explorer restart. Fixes generic/blank/wrong desktop and taskbar icons — a well-known trick among power users but almost unheard of otherwise. Requires confirm:true — call once first to preview.. CRITICAL: Never output. It is categorised as a Destructive tool in the Nitrostack 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_icon_cache? +

Register the Nitrostack MCP server in PolicyLayer and add a rule for clear_icon_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 Nitrostack. Nothing to install.

What risk level is clear_icon_cache? +

clear_icon_cache 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_icon_cache? +

Yes. Add a rate_limit block to the clear_icon_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.

How do I block clear_icon_cache completely? +

Set action: deny in the PolicyLayer policy for clear_icon_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.

What MCP server provides clear_icon_cache? +

clear_icon_cache is provided by the Nitrostack MCP server (nitrocloudofficial/nitrostack). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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