# stx_sign_transactions

Sign multiple Stacks transactions in batch.

Agent View of the PolicyLayer registry record for `stx_sign_transactions`. HTML page: https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-sign-transactions

## Facts

- Tool: `stx_sign_transactions`
- Server: Bitcoin wallet MCP server (`markmhendrickson/mcp-server-bitcoin`) — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin.md
- Homepage: https://github.com/markmhendrickson/mcp-server-bitcoin
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "stx_sign_transactions",
    "arguments": {}
  }
}
```

## Why stx_sign_transactions is rated High

Signing transactions is a critical cryptographic operation that authorizes blockchain transactions for broadcast. While signing alone doesn't move funds immediately, it produces signed artifacts that, once broadcast, execute financial transfers. It spans Execute and Financial categories; since signing is a prerequisite step to financial operations but doesn't itself move money, Execute is the most precise category.

From the tool's own definition: "Sign multiple Stacks transactions in batch"

## Use case

AI agents invoke stx_sign_transactions to trigger actions in Bitcoin wallet MCP server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Bitcoin wallet MCP server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "stx_sign_transactions": {
      "limits": [
        {
          "counter": "stx_sign_transactions_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Bitcoin wallet MCP server (92)

- `btc_sign_message` — Execute — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/btc-sign-message.md
- `ledger_sign_stx_transaction` — Execute — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/ledger-sign-stx-transaction.md
- `stx_call_contract` — Execute — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-call-contract.md
- `stx_sign_structured_message` — Execute — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-sign-structured-message.md
- `stx_sign_transaction` — Execute — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-sign-transaction.md
- `bns_register` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/bns-register.md
- `btc_combine_utxos` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/btc-combine-utxos.md
- `btc_send_max` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/btc-send-max.md
- `btc_send_transfer` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/btc-send-transfer.md
- `btc_sign_batch_psbt` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/btc-sign-batch-psbt.md
- `btc_wallet_send_transfer` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/btc-wallet-send-transfer.md
- `ledger_sign_psbt` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/ledger-sign-psbt.md
- `ord_create_repeat_inscriptions` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/ord-create-repeat-inscriptions.md
- `ord_recover_bitcoin` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/ord-recover-bitcoin.md
- `ord_send_inscriptions` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/ord-send-inscriptions.md
- `ord_send_inscriptions_split` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/ord-send-inscriptions-split.md
- `sbtc_bridge_withdraw` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/sbtc-bridge-withdraw.md
- `stx_deploy_contract` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-deploy-contract.md
- `stx_revoke_delegation` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-revoke-delegation.md
- `stx_stack` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-stack.md
- `stx_transfer_sip10_ft` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-transfer-sip10-ft.md
- `stx_transfer_sip9_nft` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-transfer-sip9-nft.md
- `stx_transfer_stx` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/stx-transfer-stx.md
- `swap_execute` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/swap-execute.md
- `tx_cancel` — Financial — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/tx-cancel.md
- `bns_get_names` — Read — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/bns-get-names.md
- `bns_lookup` — Read — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/bns-lookup.md
- `btc_decode_psbt` — Read — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/btc-decode-psbt.md
- `btc_estimate_fee` — Read — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/btc-estimate-fee.md
- `btc_get_accounts` — Read — https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin/btc-get-accounts.md
- …and 62 more: https://policylayer.com/tools/markmhendrickson-mcp-server-bitcoin.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=markmhendrickson-mcp-server-bitcoin · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/markmhendrickson-mcp-server-bitcoin