KaleidoSwap SDK Python Bindings

Python bindings for the KaleidoSwap SDK: atomic swaps (Boltz protocol) between Bitcoin, Lightning, and Liquid.

Installation

python -m pip install kaleidorg_swap_sdk

Python 3.10+ is supported. Prebuilt wheels cover Linux x86_64/aarch64, macOS x86_64/arm64, and Windows x86_64; other platforms build the published source distribution and need a Rust 1.88+ toolchain.

Quick Start

⚠️ WARNING: All examples are only to be used in REGTEST.

import kaleidorg_swap_sdk
import asyncio

async def main():
    # Initialize for regtest (do NOT use this example in production)
    network = kaleidorg_swap_sdk.Network.REGTEST
    boltz_api = kaleidorg_swap_sdk.BoltzApiClientV2.default(network)

    # Example: Create a submarine swap (Lightning → Bitcoin)
    key_pair = kaleidorg_swap_sdk.KeyPair()
    btc_chain = kaleidorg_swap_sdk.btc_chain_from_network(network)

    invoice = "lightning-invoice-to-pay"

    request = kaleidorg_swap_sdk.CreateSubmarineRequest(
        _from=btc_chain,
        to=btc_chain,
        invoice=invoice,
        refund_public_key=key_pair.public(),
    )

    swap = await boltz_api.create_swap(request)
    print(f"Send {swap.expected_amount} sats to {swap.address}")

asyncio.run(main())

Swap Types

• Submarine swaps - Lightning → On-chain Bitcoin/Liquid
• Reverse swaps - On-chain Bitcoin/Liquid → Lightning
• Chain swaps - Bitcoin ↔ Liquid atomic swaps

Examples

Complete working examples are available in the examples/ directory:

• reverse.py - Lightning to Bitcoin
• submarine.py - Bitcoin to Lightning
• chain.py - Bitcoin to Liquid (and vice versa)