Send a BTC transfer. Requires explicit user confirmation.
AI agents use btc_wallet_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.
This tool directly moves Bitcoin (money) from one address to another, constituting a financial transaction. Even though it requires explicit user confirmation, the capability to commit financial obligations (cryptocurrency transfers) makes this a Financial category risk.
From the tool's definition Tool name 'btc_wallet_send_transfer' combined with description 'Send a BTC transfer' explicitly performs financial transactions that move cryptocurrency. Server description confirms 'sending...via MCP tools' indicating money movement capability.
Attacks that exploit this kind of access
Send a BTC transfer. Requires explicit user confirmation. 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.
Register the Bitcoin wallet MCP server MCP server in PolicyLayer and add a rule for btc_wallet_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.
btc_wallet_send_transfer is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the btc_wallet_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.
Set action: deny in the PolicyLayer policy for btc_wallet_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.
btc_wallet_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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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