stx_stack
Initiate STX stacking (solo). Locks STX for reward cycles
This record as markdown: /tools/markmhendrickson-mcp-server-bitcoin/stx-stack.md
What stx_stack does on Bitcoin wallet MCP server
AI agents use stx_stack 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.
Why stx_stack is rated Critical
This tool locks STX tokens (a financial asset) for reward cycles, committing the user's funds to a time-locked financial operation. Locking cryptocurrency is a financial commitment that cannot be easily undone during the lock period, making it both Financial and potentially Destructive in nature. Financial is the most severe applicable category.
From the tool's definition Initiate STX stacking (solo). Locks STX for reward cycles
Attacks that exploit this kind of access
The rule that runs stx_stack 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_stack, this is the rule to start with:
Any call to stx_stack is blocked until a human approves it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Bitcoin wallet MCP server, apply this rule, and every stx_stack call is checked against it from then on.
Questions about stx_stack
Initiate STX stacking (solo). Locks STX for reward cycles. 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 stx_stack: 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.
stx_stack 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 stx_stack 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 stx_stack. 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.
stx_stack 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.
More on Bitcoin wallet MCP server, and thousands of servers like it.
Across the catalogue