sendTransaction

A financial tool on the MCP Ethers Wallet MCP server.

SERVERMCP Ethers Wallet SOURCEcrazyrabbitltc/mcp-ethers-server

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/crazyrabbitltc-mcp-ethers-server/sendtransaction.md

WHAT IT DOES

What sendTransaction does on MCP Ethers Wallet

AI agents use sendTransaction to commit financial operations through MCP Ethers Wallet, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why sendTransaction is rated Critical

Sending a blockchain transaction is a financial operation that moves value (ETH or tokens) on-chain. Such transactions are irreversible once confirmed, making misuse catastrophic. The server context (Ethereum wallet management) confirms this is a live financial action, not a simulation. Even though the description is empty, the tool name combined with the server's purpose makes this clearly a Financial/critical tool.

From the tool's definition Tool name 'sendTransaction' on a server described as enabling interaction with Ethereum networks, manage wallets, and execute smart contract operations. The name directly implies sending an Ethereum transaction, which can transfer ETH or tokens.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sendTransaction safely

PolicyLayer is an MCP gateway: it sits between your AI agents and MCP Ethers Wallet, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sendTransaction, this is the rule to start with:

sendTransaction Approval-gated

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

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect MCP Ethers Wallet, apply this rule, and every sendTransaction call is checked against it from then on.

FAQ

Questions about sendTransaction

What does the sendTransaction tool do? +

sendTransaction is a financial tool on the MCP Ethers Wallet MCP server. It is categorised as a Financial tool in the MCP Ethers Wallet MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on sendTransaction? +

Register the MCP Ethers Wallet MCP server in PolicyLayer and add a rule for sendTransaction: 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 MCP Ethers Wallet. Nothing to install.

What risk level is sendTransaction? +

sendTransaction 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 sendTransaction? +

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

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

sendTransaction is provided by the MCP Ethers Wallet MCP server (crazyrabbitltc/mcp-ethers-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on MCP Ethers Wallet, and thousands of servers like it.

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Guides

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