wallet_send

Send ETH or an ERC20 from the MCP wallet. amount is human units.

SERVERTwofold SOURCEtwofold-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/twofold-mcp/wallet-send.md

WHAT IT DOES

What wallet_send does on Twofold

AI agents use wallet_send to create or update resources in Twofold, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Twofold environment.

RISK

Why wallet_send is rated Medium

An AI agent can call wallet_send faster than any human can review: one bad instruction and it creates or modifies resources in Twofold by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs wallet_send safely

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

wallet_send Rate-limited

wallet_send stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "wallet_send": {
      "limits": [
        {
          "counter": "wallet_send_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about wallet_send

What does the wallet_send tool do? +

Send ETH or an ERC20 from the MCP wallet. amount is human units. It is categorised as a Write tool in the Twofold MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on wallet_send? +

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

What risk level is wallet_send? +

wallet_send is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit wallet_send? +

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

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

wallet_send is provided by the Twofold MCP server (twofold-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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