Stacking Skill

Provides Proof of Transfer (PoX) stacking operations on the Stacks blockchain. Stacking locks STX tokens for a specified number of reward cycles to earn Bitcoin rewards.

• get-pox-info and get-stacking-status — Read-only, no wallet required.
• stack-stx and extend-stacking — Write operations, require an unlocked wallet.

Usage

bun run stacking/stacking.ts <subcommand> [options]

Subcommands

get-pox-info

Get current Proof of Transfer (PoX) cycle information, including current and next cycle details, minimum stacking amount, and cycle lengths.

bun run stacking/stacking.ts get-pox-info

Output:

{
  "network": "testnet",
  "currentCycle": {
    "id": 88,
    "min_threshold_ustx": 50000000000,
    "stacked_ustx": 1200000000000,
    "is_pox_active": true
  },
  "nextCycle": {
    "id": 89,
    "min_threshold_ustx": 50000000000,
    "min_increment_ustx": 5000000000,
    "stacked_ustx": 0,
    "prepare_phase_start_block_height": 3450,
    "blocks_until_prepare_phase": 25,
    "reward_phase_start_block_height": 3500,
    "blocks_until_reward_phase": 75,
    "ustx_until_pox_rejection": 0
  },
  "minAmountUstx": 50000000000,
  "rewardCycleLength": 2100,
  "prepareCycleLength": 100,
  "currentBurnchainBlockHeight": 3425,
  "totalLiquidSupplyUstx": 1400000000000000
}

get-stacking-status

Check if an address is currently stacking STX.

bun run stacking/stacking.ts get-stacking-status [--address <addr>]

Options:

• --address (optional) — Stacks address to check (uses active wallet if omitted)

Output:

{
  "address": "SP2...",
  "network": "testnet",
  "stacked": true,
  "amountMicroStx": "100000000000",
  "amountStx": "100000",
  "firstRewardCycle": 85,
  "lockPeriod": 3,
  "unlockHeight": 6300
}

stack-stx

Lock STX tokens to earn Bitcoin rewards via Proof of Transfer. Requires an unlocked wallet with sufficient STX.

The Bitcoin reward address must be provided as a version byte and hash. For P2PKH (legacy Bitcoin address), version is 0. For P2SH, version is 1. For P2WPKH (native SegWit), version is 4.

bun run stacking/stacking.ts stack-stx \
  --amount <microStx> \
  --pox-address-version <version> \
  --pox-address-hashbytes <hex> \
  --start-burn-height <btcBlockHeight> \
  --lock-period <cycles>

Options:

• --amount (required) — Amount of STX to stack in micro-STX (1 STX = 1,000,000 micro-STX). Must meet the minimum stacking threshold.
• --pox-address-version (required) — Bitcoin address version byte: 0 (P2PKH), 1 (P2SH), 4 (P2WPKH), 5 (P2WSH), 6 (P2TR)
• --pox-address-hashbytes (required) — Bitcoin address hash bytes as a hex string (20 bytes for P2PKH/P2SH/P2WPKH, 32 bytes for P2WSH/P2TR)
• --start-burn-height (required) — Bitcoin block height at which stacking begins (must be in a prepare phase or the first block of a reward phase)
• --lock-period (required) — Number of reward cycles to lock STX (1–12)

Output:

{
  "success": true,
  "txid": "abc123...",
  "stacker": "SP2...",
  "amount": "100000000000",
  "lockPeriod": 3,
  "startBurnHeight": 850000,
  "network": "testnet",
  "explorerUrl": "https://explorer.hiro.so/txid/abc123...?chain=testnet"
}

extend-stacking

Extend an existing stacking lock period by additional reward cycles. Must already be stacking. Requires an unlocked wallet.

bun run stacking/stacking.ts extend-stacking \
  --extend-count <cycles> \
  --pox-address-version <version> \
  --pox-address-hashbytes <hex>

Options:

• --extend-count (required) — Number of additional reward cycles to lock (1–12)
• --pox-address-version (required) — Bitcoin address version byte (same as used when initially stacking)
• --pox-address-hashbytes (required) — Bitcoin address hash bytes as a hex string (same as used when initially stacking)

Output:

{
  "success": true,
  "txid": "abc123...",
  "stacker": "SP2...",
  "extendCount": 2,
  "network": "testnet",
  "explorerUrl": "https://explorer.hiro.so/txid/abc123...?chain=testnet"
}

Notes

• The minimum stacking amount varies by cycle. Use get-pox-info to check minAmountUstx before calling stack-stx.
• Bitcoin reward addresses are specified as version + hashbytes (raw hash, not base58check encoded). To derive these from a Bitcoin address, use a library or the wallet skill's get-taproot-address for Taproot addresses.
• lock-period of 1–12 cycles is valid. Each cycle is typically ~2 weeks on mainnet.
• start-burn-height must fall within the prepare phase of the current PoX cycle. Check nextCycle.prepare_phase_start_block_height from get-pox-info.
• Wallet operations require an unlocked wallet (use bun run wallet/wallet.ts unlock first).