drive_file_purge
DESTRUCTIVE. Permanently delete a TRASHED file. Bypasses the trash safety net. Requires drive:*:purge scope AND TREKMAIL_ALLOW_DESTRUCTIVE=true.
This record as markdown: /tools/trekmail-mcp-server/drive-file-purge.md
What drive_file_purge does on TrekMail MCP Server
AI agents call drive_file_purge 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.
Why drive_file_purge is rated Critical
This tool permanently deletes files without recovery options, irreversibly destroying data. It requires explicit destructive authorization and bypasses safety mechanisms (trash). The blast radius is critical—an AI agent misusing this could permanently lose important files for users. This is unambiguously a Destructive action (not merely Write), making it the highest severity risk.
From the tool's definition Tool description explicitly states 'DESTRUCTIVE. Permanently delete a TRASHED file. Bypasses the trash safety net.' The name 'drive_file_purge' also indicates irreversible deletion.
Attacks that exploit this kind of access
The rule that runs drive_file_purge 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 drive_file_purge, this is the rule to start with:
drive_file_purge is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect TrekMail MCP Server, apply this rule, and every drive_file_purge call is checked against it from then on.
Questions about drive_file_purge
DESTRUCTIVE. Permanently delete a TRASHED file. Bypasses the trash safety net. Requires drive:*:purge scope AND 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.
Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for drive_file_purge: 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.
drive_file_purge 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 drive_file_purge 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 drive_file_purge. 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.
drive_file_purge 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.
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