stx_transfer_stx

Transfer STX to a recipient. Amount in micro-STX (1 STX = 1,000,000 uSTX).

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/stx-transfer-stx.md

WHAT IT DOES

What stx_transfer_stx does on Bitcoin wallet MCP server

AI agents use stx_transfer_stx 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 stx_transfer_stx is rated Critical

This tool moves cryptocurrency (Stacks tokens) from one wallet to another, which constitutes a financial transaction that commits monetary value. Misuse by an AI agent could result in unauthorized fund transfers, theft, or loss of user assets. This is the most severe category applicable and warrants critical severity due to direct financial risk and irreversibility of blockchain transactions.

From the tool's definition Tool name 'stx_transfer_stx' performs a transfer operation. Description states 'Transfer STX to a recipient' with amounts specified in micro-STX, indicating actual currency movement.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

stx_transfer_stx Approval-gated

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

FAQ

Questions about stx_transfer_stx

What does the stx_transfer_stx tool do? +

Transfer STX to a recipient. Amount in micro-STX (1 STX = 1,000,000 uSTX). 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 stx_transfer_stx? +

Register the Bitcoin wallet MCP server MCP server in PolicyLayer and add a rule for stx_transfer_stx: 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 stx_transfer_stx? +

stx_transfer_stx 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 stx_transfer_stx? +

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

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

stx_transfer_stx 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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