unlabel_user

THE RISK

Critical Risk

Why unlabel_user needs a policy

The tool uses HTTP DELETE to remove labels from a user record. This is an irreversible deletion of label data, and in a trust/abuse context (given the abuse_type scoping option), removing labels could have significant security implications by stripping abuse classifications from users.

From the tool's definition Remove any existing label on a user (DELETE /v205/users/{user_id}/labels)

Documented attack patterns abuse exactly the kind of access unlabel_user gives an agent:

POLICY

How to control unlabel_user

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for unlabel_user:

policy.json

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

unlabel_user disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Mcp Ap2 — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

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All 1300 Mcp Ap2 tools →

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Go deeper

Critical-risk tools in Mcp Ap2 → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about unlabel_user

What does the unlabel_user tool do? +

Remove any existing label on a user (DELETE /v205/users/{user_id}/labels). Optionally scope by abuse_type. It is categorised as a Destructive tool in the Mcp Ap2 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 unlabel_user? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for unlabel_user: 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 Mcp Ap2. Nothing to install.

What risk level is unlabel_user? +

unlabel_user 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 unlabel_user? +

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

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

unlabel_user is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →