referral_withdraw_card · StealthSurf MCP Server MCP

WHAT IT DOES

What referral_withdraw_card does on StealthSurf MCP Server

AI agents use referral_withdraw_card to commit financial operations through StealthSurf MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why referral_withdraw_card needs a policy

referral_withdraw_card moves real money, and an autonomous agent will call it with the same confidence it calls a search tool. A misread instruction or an injected prompt is all it takes to drain an account or blow a budget.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

referral_withdraw_card Approval-gated

Any call to referral_withdraw_card is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "referral_withdraw_card": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches StealthSurf MCP Server, so you can run agents against it safely.

FAQ

Questions about referral_withdraw_card

What does the referral_withdraw_card tool do? +

Withdraw referral balance to a bank card. Minimum 1000 RUB, maximum 75000 RUB per transaction. Card number is validated (Luhn check). Returns withdrawal record with id and created_at. It is categorised as a Financial tool in the StealthSurf MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on referral_withdraw_card? +

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

What risk level is referral_withdraw_card? +

referral_withdraw_card is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit referral_withdraw_card? +

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

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

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