AI agents call delete-label to permanently remove resources in Enhanced Gmail MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly deletes a Gmail label, which cannot be undone. Deletion of labels could cause loss of organizational structure and associated metadata. While not as severe as deleting emails themselves, permanent label deletion is a destructive action that warrants the Destructive category.
From the tool's definition Tool name 'delete-label' combined with description 'Permanently deletes a label' — the word 'Permanently' explicitly indicates irreversible deletion.
Documented attack patterns abuse exactly the kind of access delete-label gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Enhanced Gmail MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for delete-label:
{
"version": "1",
"default": "deny",
"hide": [
"delete-label"
]
}delete-label disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
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Permanently deletes a label. It is categorised as a Destructive tool in the Enhanced Gmail MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Enhanced Gmail MCP Server MCP server in PolicyLayer and add a rule for delete-label: 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 Enhanced Gmail MCP Server. Nothing to install.
delete-label 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-label 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-label. 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-label is provided by the Enhanced Gmail MCP Server MCP server (theposch/gmail-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Enhanced Gmail MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
27 Enhanced Gmail MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.