High-risk tools in Bitcoin wallet MCP server
6 of the 93 tools in Bitcoin wallet MCP server are classified as high risk. This page profiles those tools specifically, with recommended policy actions and the attack patterns that target them.
Every operation listed below is an action PolicyLayer recommends controlling at the transport layer. Open any tool to see the full profile, risk score, and YAML policy snippet.
Tools at high risk
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btc_sign_messageExecuteSign a message using the wallet
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ledger_sign_stx_transactionExecuteSign a Stacks transaction using the Ledger Stacks app.
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stx_call_contractExecuteCall a public Clarity smart contract function.
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stx_sign_structured_messageExecuteSign SIP-018 structured data. Takes a domain and message,
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stx_sign_transactionExecuteSign a serialized Stacks transaction (SIP-30 compatible).
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stx_sign_transactionsExecuteSign multiple Stacks transactions in batch.
Attacks that target this class
High-risk tools in any server share these documented attack patterns. Each links to the full case and the defensive policy.