Claude Skills by claude-dev-suite

mempool.space: open-source mempool explorer + accelerator. Detailed fee tracking, mempool blocks projection, REST + WebSocket APIs. Self-hostable. USE WHEN: integrating mempool.space API, deploying self-hosted variant, evaluating fee estimation services.

Self-hosted Bitcoin node distros: Umbrel, Start9 Embassy, RaspiBlitz, MyNode, Citadel. Pre-configured Bitcoin + Lightning + apps. USE WHEN: deploying personal node infrastructure, choosing between distros.

Sparrow Wallet: power-user desktop wallet for Bitcoin. PSBT-first, HW wallet support, multisig coordination, CoinJoin (Whirlpool fork), PayJoin, BIP47. USE WHEN: power-user wallet workflows, evaluating Sparrow vs Specter / Electrum.

Specter Desktop: open-source GUI for Bitcoin Core + multisig coordination + HW wallet. Designed for self-custody power users. USE WHEN: setting up multisig with Specter, evaluating coordinator options.

Ark protocol: VTXOs (Virtual Transaction Outputs) batched off-chain with periodic on-chain settlement. ARKADE (Ark Labs) is the first mainnet implementation. ASP (Ark Service Provider) coordinates rounds; users keep unilateral exit. USE WHEN: building Ark integrations, evaluating Ark vs Lightning, designing batched payment flows.

Babylon: native BTC staking protocol securing PoS chains. Trustless Bitcoin Vaults via BitVM3, integration with Cosmos chains. No bridging / wrapping required. USE WHEN: building BTC-secured PoS chains, integrating Babylon staking, evaluating BTCFi yield options.

Bitlayer: Bitcoin L2 with ZK proof system, BTC staking, EVM compatibility. Emerging player 2024-2026. USE WHEN: evaluating Bitlayer for deployment, BTC staking products.

BitVM, BitVM2, BitVM3: off-chain computation framework using optimistic challenge games on Bitcoin script. Foundation for trust-minimized bridges to L2s and PoS chains. USE WHEN: building trust-minimized bridges, understanding ZK rollup peg-out mechanisms, evaluating bridge security models.

BOB (Build on Bitcoin): hybrid Bitcoin/Ethereum L2 using OP Stack + Bitcoin security. Bridges to Bitcoin via threshold signatures + zk-proofs. USE WHEN: building cross-chain Bitcoin/Ethereum apps, evaluating BOB hybrid model.

Botanix: EVM-compatible Bitcoin L2 using "Spiderchain" architecture (federated multisig rotated by orchestrators). stBTC native staking. USE WHEN: deploying EVM apps on Botanix, evaluating Spiderchain vs other federation models.

B² Network (BSquared): hybrid ZK + optimistic Bitcoin L2 with EVM compatibility. Live since 2024. USE WHEN: evaluating B² for deployment, integrating with their bridge, comparing Bitcoin L2 options.

Cashu: single-mint Chaumian e-cash for Bitcoin Lightning. NUTs (Notation, Usage, and Terminology specs) define mint protocol, payment flow, blind signatures. USE WHEN: integrating Cashu mints/wallets, building NUT-compliant apps, comparing with Fedimint.

Citrea: first ZK-rollup on Bitcoin (mainnet 27 Jan 2026), zkEVM, BitVM2 trustless bridge, ctUSD stablecoin, native BTC lending. USE WHEN: building zkEVM apps on Bitcoin, integrating with Citrea, evaluating ZK rollups vs sidechains.

Counterparty: legacy Bitcoin meta-protocol (2014) for assets, DEX, betting using OP_RETURN. Largely historic; still alive with niche use. USE WHEN: dealing with legacy Counterparty assets, understanding pre-Ordinals asset ecosystem, evaluating obsolete patterns.

Drivechains (BIP300/301) and Spacechains (Ruben Somsen): proposals for sidechains pegged via miner-validated locks or via OP_CAT-like primitives. Status: NOT activated on mainnet. USE WHEN: evaluating proposed sidechain mechanisms, understanding why they're not live, comparing with federated/trustless bridges.

Fedimint: federated Chaumian e-cash on Bitcoin with Lightning gateway. Multi-sig guardians, blind-signature notes, community-scale custody with privacy. Fedi mobile wallet. USE WHEN: deploying community mints, integrating federated e-cash, evaluating Fedimint vs Cashu.

Hemi Network: hybrid Bitcoin + Ethereum L2 with "superfinality" via Bitcoin PoW. ~$1.2B TVL, 90+ protocols (early 2026). USE WHEN: building cross-chain DeFi, evaluating Hemi vs BOB.

Liquid Network: federated sidechain by Blockstream. Confidential Transactions, asset issuance (LBTC, USDt-Liquid, others), 2-min blocks, n-of-m federation peg-out. Elements codebase. USE WHEN: building on Liquid, peg-in/peg-out integrations, designing CT-based privacy.

MAP Protocol: omnichain interoperability layer with Bitcoin integration. Cross-chain messaging across many chains; positions itself as Bitcoin L2 connector. USE WHEN: building cross-chain apps spanning Bitcoin + others.

Merlin Chain: largest Bitcoin L2 by TVL (2026), ZK rollup with EVM, 150+ dApps. Federation peg with planned trust-minimization. USE WHEN: evaluating Merlin for deployment, BTC DeFi.

RGB protocol: client-side validated smart contracts on Bitcoin + Lightning. Schema-driven contracts, AluVM (RGB VM), rgb-lightning-node for LN integration. USDT-on-RGB rollout. USE WHEN: building RGB contracts, integrating RGB Lightning, comparing with TAP.

Rootstock (RSK): EVM-compatible Bitcoin sidechain with merge mining and federation peg. RBTC native token, 30-second blocks, Solidity smart contracts. USE WHEN: building Bitcoin DeFi via EVM contracts, integrating RSK peg, comparing with Stacks / Liquid.

Spark by Lightspark: statechain-derived L2 with FROST threshold signatures, leaf architecture, Lightning compatibility. Beta launched April 2025; managed by Spark Operators (SOs). USE WHEN: integrating with Spark, evaluating Spark vs Ark vs Lightning, designing leaf-based UTXO trees.

Stacks: Bitcoin smart contract layer with Clarity language, sBTC for native peg, Nakamoto upgrade for fast finality, PoX (Proof of Transfer) consensus. USE WHEN: building Bitcoin smart contracts, integrating sBTC, evaluating Stacks vs RSK / EVM alternatives.

Statechains: off-chain UTXO ownership transfer via Statechain Operator (SO) signing. Mercury Layer (CommerceBlock) is the main implementation. 1-of-N security model. USE WHEN: evaluating off-chain UTXO transfer, comparing with Spark/ Ark, designing 1-of-N security models.

Strata by Alpen Labs: ZK rollup on Bitcoin, BitVM-based bridge, EVM-compatible execution. Emerging Bitcoin L2 in 2025-2026. USE WHEN: evaluating Strata for deployment, comparing with Citrea.

Taproot Assets (formerly Taro) by Lightning Labs: client-side validation asset protocol on Bitcoin + Lightning. Multi-asset Lightning channels, AddressV2, multi-hop asset routing. USE WHEN: issuing/transferring assets on Bitcoin, integrating asset Lightning channels, evaluating TAP vs RGB.

Threshold Network (tBTC): federated BTC bridge to Ethereum/EVM chains with t-of-n threshold signers, random group selection. USE WHEN: bridging BTC to Ethereum DeFi, evaluating tBTC vs wBTC.

bcoin: full-node Bitcoin implementation in JavaScript. Wallets, HTTP API, SPV mode. Alternative to running bitcoind. USE WHEN: needing a Node-native Bitcoin full node, evaluating alternative implementations.

bdk-jvm / bdk-android: Kotlin/Java bindings to BDK. Same descriptor- first wallet API. UniFFI-generated. USE WHEN: building JVM / Android wallets with BDK quality.

bdkpython: Python bindings to BDK. Same descriptor-first wallet API as Rust BDK. UniFFI-generated. USE WHEN: building Python wallets with BDK quality, multi-language app where Python integrates same logic as Rust/Swift.

Bitcoin Dev Kit (BDK): high-level Rust wallet library. Descriptor-based wallets, multiple chain backends (Esplora, Electrum, RPC), PSBT, fee estimation, coin selection. Bindings to Swift / Kotlin / Python / Flutter. USE WHEN: building wallets in Rust or via BDK bindings, integrating descriptor wallets into apps.

bitcoinj: mature Java/Kotlin Bitcoin library. SPV node, wallet, HD derivation, used by BlueWallet (Android), older mobile wallets. USE WHEN: building JVM Bitcoin apps, Android-native wallet code.

bitcoinjs-lib: TypeScript/JavaScript Bitcoin library. Tx, Script, Address, key types, PSBT, BIP32. Browser + Node. USE WHEN: building Bitcoin apps in JS/TS, server or browser.

bitcoinlib (Python): high-level wallet library by 1200WD. HD wallets, multi-currency, address generation, tx construction. USE WHEN: building Python wallets, multi-currency BTC + altcoin apps.

bolt11 decoder libraries: parse / encode BOLT11 Lightning invoices in JS, Python, Rust, Go. USE WHEN: parsing LN invoices in app code, building Lightning payment flows.

btcd: full-node Bitcoin implementation in Go by btcsuite. Server, RPC, wallet (btcwallet), Lightning (LND-derived). USE WHEN: building Go-native Bitcoin services, alternative to bitcoind, integrating with btcsuite ecosystem.

btcsuite: collection of Go Bitcoin libraries. btcec (secp256k1), btcutil (helpers), txscript (Script engine), wire (P2P). USE WHEN: building Bitcoin Go apps, integrating with LND / btcd.

embit: Python Bitcoin library designed for embedded / hardware wallets (MicroPython compatible). Used by Specter DIY, Krux, SeedSigner. USE WHEN: building HW signers, MicroPython Bitcoin apps, low-resource Python.

hdwallet (Python): HD wallet generator + key derivation. Multi-coin, BIP32/39/44/49/84/86/85. USE WHEN: deriving keys for many cryptocurrencies, scripting key generation in Python.

Lightning Dev Kit (LDK): modular Rust crates for embedding Lightning in apps. ldk-node for opinionated quick-start. Bindings to Swift / Kotlin / JS. USE WHEN: embedding Lightning in mobile/desktop apps, building custom LN logic.

libbitcoin: comprehensive C++ Bitcoin library. Multiple toolkits (libbitcoin-system, libbitcoin-server, libbitcoin-explorer). Alternative implementation focused on cleanliness. USE WHEN: studying alternative Bitcoin codebases, building C++ Bitcoin services.

libwally-core: Blockstream's C library for wallet primitives. BIP32/39, PSBT, Liquid Confidential Transactions, BIP143, Schnorr. Bindings to Python, JS, Java, Swift. USE WHEN: building cross-language wallets via libwally bindings, integrating Liquid CT.

lnd Go libraries: lnrpc (gRPC client), chantools (channel utilities), loopd (Loop client), poold (Pool client), neutrino (BIP157/158 SPV). USE WHEN: building Go apps integrating with LND, Loop, or running Neutrino light clients.

mempool.js (@mempool/mempool.js): TypeScript client for mempool.space API. REST + WebSocket; address history, fee estimates, mining stats. USE WHEN: integrating mempool.space data, building wallets / explorers.

rust-miniscript: Rust crate for Miniscript and descriptor handling. Policy compilation, satisfaction analysis, descriptor parsing for legacy + Tapscript. USE WHEN: working with descriptors / miniscript in Rust, building wallets that compose spending conditions.

NBitcoin: comprehensive .NET / C# Bitcoin library. Used by BTCPay Server, NBXplorer, many .NET tools. Tx, Script, PSBT, BIP32, HW wallet integration. USE WHEN: building .NET Bitcoin apps, integrating with BTCPay ecosystem.

python-bitcoinlib by Peter Todd: low-level Bitcoin primitives in Python. Tx, Script, Address, key types, RPC client. USE WHEN: scripting Bitcoin operations in Python, low-level manipulation, Bitcoin Core RPC integration.

rust-bitcoin: Rust crate for Bitcoin primitives. Tx, Block, Script, Address, Network, key types, PSBT, BIP32. Foundation for BDK, LDK, miniscript-rs. USE WHEN: building Bitcoin apps in Rust, parsing/constructing txs, working with addresses + scripts.

rust-dlc: Rust DLC implementation. Funding, CET construction, oracle attestation handling, refund logic. USE WHEN: building DLC apps in Rust, integrating oracle-driven Bitcoin contracts.