send_transaction · Monad MCP Server MCP: Risk & Policy

WHAT IT DOES

What send_transaction does on Monad MCP Server

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

WHY IT NEEDS A POLICY

Why send_transaction needs a policy

This tool transfers cryptocurrency assets (native MON tokens or ERC20 tokens) to another address, which constitutes a financial operation that moves monetary value. Misuse could result in irreversible loss of funds, warranting a critical severity rating.

From the tool's definition Send native MON or ERC20 tokens to another address

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_transaction Approval-gated

Any call to send_transaction 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": {
    "send_transaction": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about send_transaction

What does the send_transaction tool do? +

Send native MON or ERC20 tokens to another address. It is categorised as a Financial tool in the Monad MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on send_transaction? +

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

What risk level is send_transaction? +

send_transaction 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 send_transaction? +

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

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

send_transaction is provided by the Monad MCP Server MCP server (tairon-ai/monad-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.