sendSignedTransaction

Send a signed transaction to the blockchain network. Returns transaction hash and receipt.

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/sendsignedtransaction.md

WHAT IT DOES

What sendSignedTransaction does on MCP Ethers Wallet

AI agents use sendSignedTransaction 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 sendSignedTransaction is rated Critical

Sending a signed transaction to a blockchain is an irreversible financial/state-changing operation. It can transfer ETH, tokens, or trigger any contract interaction. Once broadcast and confirmed, transactions cannot be undone. This tool has critical blast radius as it can move funds or execute arbitrary on-chain operations on behalf of the wallet.

From the tool's definition Send a signed transaction to the blockchain network

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sendSignedTransaction 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 sendSignedTransaction, this is the rule to start with:

sendSignedTransaction Approval-gated

Any call to sendSignedTransaction 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": {
    "sendSignedTransaction": {
      "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 sendSignedTransaction call is checked against it from then on.

FAQ

Questions about sendSignedTransaction

What does the sendSignedTransaction tool do? +

Send a signed transaction to the blockchain network. Returns transaction hash and receipt. 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 sendSignedTransaction? +

Register the MCP Ethers Wallet MCP server in PolicyLayer and add a rule for sendSignedTransaction: 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 sendSignedTransaction? +

sendSignedTransaction 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 sendSignedTransaction? +

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

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

sendSignedTransaction 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

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