Critical Risk →

BinanceWrapBeth

Wrap BETH API allows users to convert BETH into WBETH, providing the wrapped WBETH amount and the exchange rate from BETH to WBETH.

How to control BinanceWrapBeth ↓

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

Critical Risk

This tool executes a token conversion on-chain (BETH to WBETH), which constitutes a financial operation involving crypto assets. While wrapping is technically reversible (you can unwrap), it commits on-chain transactions with real financial value. Misuse could result in unintended token conversions or loss of funds due to slippage/exchange rate changes.

From the tool's definition 'convert BETH into WBETH' — performs a token wrapping/conversion operation that commits a blockchain financial transaction

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

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

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

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

  1. Create a free account and register BNB Chain MCP — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Go deeper

What does the BinanceWrapBeth tool do? +

Wrap BETH API allows users to convert BETH into WBETH, providing the wrapped WBETH amount and the exchange rate from BETH to WBETH. It is categorised as a Financial tool in the BNB Chain MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on BinanceWrapBeth? +

Register the BNB Chain MCP server in PolicyLayer and add a rule for BinanceWrapBeth: 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 BNB Chain MCP. Nothing to install.

What risk level is BinanceWrapBeth? +

BinanceWrapBeth 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 BinanceWrapBeth? +

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

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

BinanceWrapBeth is provided by the BNB Chain MCP server (nirholas/bnbchain-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every BNB Chain MCP tool call.

Deterministic rules across all 1240 BNB Chain MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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1240 BNB Chain MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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