btc_send_transfer

Send BTC to one or more recipients with sat-denominated amounts.

SERVERBitcoin wallet MCP server SOURCEmarkmhendrickson/mcp-server-bitcoin

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/markmhendrickson-mcp-server-bitcoin/btc-send-transfer.md

WHAT IT DOES

What btc_send_transfer does on Bitcoin wallet MCP server

AI agents use btc_send_transfer to commit financial operations through Bitcoin wallet MCP server, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why btc_send_transfer is rated Critical

This tool directly transfers Bitcoin to recipient addresses, which constitutes moving financial assets and committing financial obligations. This is the most severe category (Financial > Destructive > Execute > Write > Read). The blast radius of misuse by an AI agent is critical: unauthorized sending of BTC results in permanent loss of funds with no recovery mechanism.

From the tool's definition Tool description states 'Send BTC to one or more recipients' - this is a direct transfer of cryptocurrency funds. Combined with server description indicating 'sending' operations on a Bitcoin wallet MCP server, this tool moves money (BTC) irreversibly.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs btc_send_transfer safely

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

btc_send_transfer Approval-gated

Any call to btc_send_transfer 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": {
    "btc_send_transfer": {
      "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 Bitcoin wallet MCP server, apply this rule, and every btc_send_transfer call is checked against it from then on.

FAQ

Questions about btc_send_transfer

What does the btc_send_transfer tool do? +

Send BTC to one or more recipients with sat-denominated amounts. It is categorised as a Financial tool in the Bitcoin wallet MCP server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on btc_send_transfer? +

Register the Bitcoin wallet MCP server MCP server in PolicyLayer and add a rule for btc_send_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 Bitcoin wallet MCP server. Nothing to install.

What risk level is btc_send_transfer? +

btc_send_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 btc_send_transfer? +

Yes. Add a rate_limit block to the btc_send_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 btc_send_transfer completely? +

Set action: deny in the PolicyLayer policy for btc_send_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 btc_send_transfer? +

btc_send_transfer is provided by the Bitcoin wallet MCP server MCP server (markmhendrickson/mcp-server-bitcoin). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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