gnfd_create_payment_account

THE RISK

Critical Risk

Why gnfd_create_payment_account needs a policy

Creating a payment account in a DeFi ecosystem is a financial operation that establishes the ability to receive, hold, and potentially transfer funds. While account creation itself may be reversible, it represents commitment to financial infrastructure and could be misused by an AI agent to set up unauthorized payment flows or facilitate fund theft if chained with transfer operations.

From the tool's definition Tool name 'gnfd_create_payment_account' explicitly indicates creation of a payment account on a DeFi/crypto ecosystem (Sperax) server. Description states 'Create a new payment account' which involves establishing financial infrastructure for fund movements.

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

POLICY

How to control gnfd_create_payment_account

PolicyLayer is an MCP gateway — it sits between your AI agents and Sperax Ecosystem Crypto & DeFI MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for gnfd_create_payment_account:

policy.json

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

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

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

GATE THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Sperax Ecosystem Crypto & DeFI MCP Server tools

Financial api_ultrade_market_cancel_order Cancel open order Financial api_ultrade_market_cancel_orders Cancel multiple open orders Financial binance_us_cancel_oco Cancel an entire OCO order on Binance.US. Cancelling any individual leg will cancel the en Financial binance_us_cancel_order Cancel an active order on Binance.US. Either orderId or origClientOrderId must be provided Financial binance_us_cancel_replace Cancel an existing order and place a new order on the same symbol atomically. This is usef Financial binance_us_cust_cancel_orders_symbol Cancel all active custodial orders for a specific trading pair. ⚠️ REQUIRES CUSTODIAL SOL Financial BinanceCrossMarginCancelAllOrders Cancel all open orders on a symbol in Cross Margin account. Financial BinanceDeliveryCancelBatchOrders Cancel multiple COIN-M Futures orders in batch (max 10).

All 1318 Sperax Ecosystem Crypto & DeFI MCP Server tools →

Financial tools on other servers

0xarchive web3_subscribe Math MCP Server financial_calculator MCP Kling generate_video MCP Uber Server uber_request_ride

Go deeper

Critical-risk tools in Sperax Ecosystem Crypto & DeFI MCP Server → 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.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about gnfd_create_payment_account

What does the gnfd_create_payment_account tool do? +

Create a new payment account. It is categorised as a Financial tool in the Sperax Ecosystem Crypto & DeFI MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on gnfd_create_payment_account? +

Register the Sperax Ecosystem Crypto & DeFI MCP Server MCP server in PolicyLayer and add a rule for gnfd_create_payment_account: 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 Sperax Ecosystem Crypto & DeFI MCP Server. Nothing to install.

What risk level is gnfd_create_payment_account? +

gnfd_create_payment_account 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 gnfd_create_payment_account? +

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

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

gnfd_create_payment_account is provided by the Sperax Ecosystem Crypto & DeFI MCP Server MCP server (sperax/sperax-crypto-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Sperax Ecosystem Crypto & DeFI MCP Server tool call.

Start from Sperax Ecosystem Crypto & DeFI MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →