empty_folder

Delete all messages in Trash or Junk folder. Only these two folders can be emptied. Requires TREKMAIL_ALLOW_DESTRUCTIVE=true.

SERVERTrekMail MCP Server SOURCEtrekmail/mcp-server

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/trekmail-mcp-server/empty-folder.md

WHAT IT DOES

What empty_folder does on TrekMail MCP Server

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

RISK

Why empty_folder is rated Critical

This tool permanently and irreversibly deletes all messages in specified folders (Trash or Junk). The deletion is bulk, non-recoverable, and the API explicitly requires a destructive operations flag, indicating the developers classified this as a high-risk irreversible operation. While scoped to two folders, the blast radius for an agent incorrectly targeting this tool is complete data loss within those folders.

From the tool's definition 'Delete all messages' with explicit destructive confirmation requirement 'Requires TREKMAIL_ALLOW_DESTRUCTIVE=true' and irreversible action on message data.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs empty_folder safely

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

empty_folder Hidden

empty_folder 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": [
    "empty_folder"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about empty_folder

What does the empty_folder tool do? +

Delete all messages in Trash or Junk folder. Only these two folders can be emptied. Requires TREKMAIL_ALLOW_DESTRUCTIVE=true. It is categorised as a Destructive tool in the TrekMail MCP Server 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 empty_folder? +

Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for empty_folder: 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 TrekMail MCP Server. Nothing to install.

What risk level is empty_folder? +

empty_folder 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 empty_folder? +

Yes. Add a rate_limit block to the empty_folder 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 empty_folder completely? +

Set action: deny in the PolicyLayer policy for empty_folder. 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 empty_folder? +

empty_folder is provided by the TrekMail MCP Server MCP server (trekmail/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on TrekMail MCP Server, and thousands of servers like it.

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