Bitcoin transactions

Bitcoin Transactions Skill

Overview

This skill governs all outgoing Bitcoin transfers from the Sovereign Agent wallet. Transactions are constructed as PSBTs, signed inside the Rust TEE Enclave, and broadcast to Mutinynet via the Esplora API.

Two tools are available: compose_transaction for execution, and propose_policy_update for governance escalation when the spend exceeds the daily allowance.

Tools

compose_transaction

Constructs, signs, and broadcasts a Bitcoin transaction in one call.

Capabilities:

• Single payment: one address, one amount
• Batch payment: up to 10 outputs in a single transaction
• OP_RETURN message: up to 80 bytes of arbitrary data etched on-chain
• Fee safety trap: automatically aborts if network fee exceeds 50 sat/vB

Required parameters:

{
  "payments": [
    { "address": "tb1p...", "amount_sats": 10000 },
    { "address": "tb1p...", "amount_sats": 5000 }
  ]
}

Optional parameters:

{
  "op_return_message": "Hello Mutinynet",
  "confirmed_high_fee": true
}

When to call: once you have the destination address(es) and amount(s). If the user provides multiple recipients, batch them into a single call (more efficient, saves fees).

Response format: on success:

✅ Transaction Broadcasted!
TXID: <64-char hex>
Explorer: https://mutinynet.com/tx/<txid>

On fee trap:

🚨 [FEE TRAP] Network congestion detected (X sat/vB)...

The user must explicitly confirm with confirmed_high_fee: true.

---

propose_policy_update

Generates a governance QR code (PSBT) for the user to authorize a spending limit increase via hardware wallet.

When to call: ONLY when a spend exceeds the current daily allowance (visible via get_governance_policy). Do not call for normal spends.

Required parameters:

{ "new_allowance_sats": 500000 }

Response: generates a QR code image sent via Telegram for the user to scan with their hardware signer. The policy update takes effect once the signed PSBT is submitted back to the enclave.

Agent Reasoning Protocol

Step 1 — Extract addresses and amounts

Scan the user message for:

• Taproot addresses starting with tb1p (Mutinynet Signet)
• Amounts in sats, mBTC, or BTC (convert to sats)

If multiple address-amount pairs are mentioned, group them into one batched compose_transaction call.

Step 2 — Check balance

Call check_my_balance to confirm the wallet has enough funds:

• Required: sum of all payment amounts + estimated fee (~500–2,000 sat)

If insufficient: report the shortfall and stop. Do not call compose_transaction.

Step 3 — Check allowance

Call get_governance_policy if the spend is large or if a prior transaction was rejected with a policy error.

• If spend ≤ allowance → proceed with compose_transaction
• If spend > allowance → call propose_policy_update instead

Step 4 — Execute or escalate

Normal path: call compose_transaction with the extracted parameters.

High-fee path: if the tool returns a fee trap warning, ask the user to confirm: "Network fees are high (X sat/vB). This will cost ~Y sats in fees. Confirm to proceed?" Then retry with confirmed_high_fee: true.

Allowance path: call propose_policy_update and instruct the user to scan the QR code with their hardware wallet.

Security Notes

• OP_RETURN messages are permanent and public. Warn the user before sending sensitive content on-chain. The 80-byte cap is enforced by the enclave.
• Mutinynet only. The address validator enforces Signet network. Mainnet addresses will be rejected by gen_live_psbt.
• No double-spend protection at the agent level. Back-to-back transactions using the same UTXO will fail at broadcast. Wait for confirmation between sends.
• OP_RETURN and Rune mint are mutually exclusive. A single transaction cannot carry both a legacy OP_RETURN message and a Runestone. Use the mint_rune skill for Runes; use op_return_message only for plain text.

Example Conversations

User: "Send 5,000 sats to tb1pqqqqsovereign..."

Agent reasoning:

1. Extract: address=tb1pqqqqsovereign..., amount=5000 sats
2. Call check_my_balance → 50,000 sats ✅
3. Call compose_transaction with payments: [{address: ..., amount_sats: 5000}]
4. Display TXID receipt

User: "Pay Alice 10k and Bob 20k"

Agent reasoning:

1. Ask for addresses if not provided, OR extract from context
2. Call check_my_balance → 50,000 sats ✅
3. Call compose_transaction with two payments in one call (batch)

User: "Write 'SOVEREIGN FOREVER' on the blockchain"

Agent reasoning:

1. Call check_my_balance (need ~1,500 sats minimum for fee)
2. Call compose_transaction with op_return_message: "SOVEREIGN FOREVER" and payments: [] (no payment outputs — change back to self)

User: "Send 2 BTC to tb1p..."

Agent reasoning:

1. Convert: 2 BTC = 200,000,000 sats
2. Call check_my_balance → likely insufficient on testnet
3. If balance < 200M sats: report insufficient funds
4. If balance OK: call get_governance_policy — allowance is 100,000 sats by default
5. 200M > 100,000 → call propose_policy_update with an appropriate new limit