bnb_transfer

THE RISK

Critical Risk

This tool irreversibly moves cryptocurrency on behalf of the AI agent. Even with correct arguments, it commits financial transactions that cannot be easily undone. The ability to send any BEP-20 token to arbitrary addresses creates extreme risk if the agent is manipulated into sending funds to wrong recipients or excessive amounts. This is the most severe financial operation and warrants critical severity.

From the tool's definition Tool description explicitly states 'Send BEP-20 tokens (USDT, BUSD, or any BEP-20) to an address on BNB Chain' - this directly transfers cryptocurrency/tokens, which constitutes moving money and committing financial obligations.

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

HOW TO CONTROL BNB_TRANSFER

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

policy.json

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

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

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

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EXPLORE

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Go deeper

Critical-risk tools in Agenti → 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.
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Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

What does the bnb_transfer tool do? +

Send BEP-20 tokens (USDT, BUSD, or any BEP-20) to an address on BNB Chain. It is categorised as a Financial tool in the Agenti MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on bnb_transfer? +

Register the Agenti MCP server in PolicyLayer and add a rule for bnb_transfer: 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 Agenti. Nothing to install.

What risk level is bnb_transfer? +

bnb_transfer 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 bnb_transfer? +

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

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

bnb_transfer is provided by the Agenti MCP server (nirholas/agenti). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Agenti tool call.

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// WHAT BNB_TRANSFER ON AGENTI DOES

// THE RISK

// HOW TO CONTROL BNB_TRANSFER

// EXPLORE