Web3

Use when implementing Bitcoin wallet features - provides complete architecture for on-chain Bitcoin transactions, UTXO management, address derivation from Nostr keys, and transaction handling with proper security patterns

Expert on building decentralized applications with Shelby Protocol storage on Aptos. Helps with dApp architecture, wallet integration (Petra), browser SDK usage, React/Vue integration, file uploads, content delivery, and building Shelby-powered applications. Triggers on keywords Shelby dApp, build on Shelby, Shelby application, Petra wallet, browser storage, web3 app, decentralized app Shelby, React Shelby, Vue Shelby.

Use when implementing npub.cash static Lightning address functionality - provides complete patterns for obtaining static Lightning addresses (username@npubx.cash), managing npub.cash account settings, syncing quotes from npub.cash, and integrating with Lightning wallets

Trace cryptocurrency wallet activity and blockchain transactions

Viem blockchain client patterns for Ethereum interactions, transactions, signing, encoding, and smart contract calls. Triggers on viem, publicClient, walletClient, chain, abi.

Expert on Shelby Protocol decentralized blob storage on Aptos blockchain. Coordinates 7 specialized sub-skills covering protocol architecture, SDK usage, smart contracts, CLI tools, RPC infrastructure, dApp building, and storage integration. Triggers on keywords Shelby Protocol, Shelby storage, decentralized storage, Aptos storage, blob storage, Shelby.

Expert guidance for implementing BRC-100 conforming wallets using @bsv/wallet-toolbox. Covers wallet initialization, transaction creation/signing, key management, storage, and certificate operations following the BRC-100 standard.

Expert on Shelby Protocol decentralized blob storage on Aptos blockchain. Coordinates 7 specialized sub-skills covering protocol architecture, SDK usage, smart contracts, CLI tools, RPC infrastructure, dApp building, and storage integration. Triggers on keywords Shelby Protocol, Shelby storage, decentralized storage, Aptos storage, blob storage, Shelby.

Build Midnight dApps with TypeScript integration, wallet connectivity, and contract deployment. Use when connecting wallets, deploying contracts, or building dApp frontends. Triggers on wallet, provider, Next.js, deployment, or TypeScript integration questions.

Expert guidance for implementing BRC-100 conforming wallets using Go wallet-toolbox. Covers wallet initialization, transaction creation/signing, key management, storage, and certificate operations following the BRC-100 standard in Go.

Blockchain Captain - Smart contracts, DeFi, Web3, and decentralized systems specialist

Comprehensive toolkit for building applications with JPYC (Japanese Yen Pegged Coin). Use this skill when developing with JPYC token, implementing payment features, integrating JPYC SDK, deploying JPYC contracts to Base Sepolia, or building DApps with JPYC. Supports both JPYC SDK v1 usage and direct Solidity smart contract development with Hardhat, ethers.js, viem, Next.js, and React.

Complete guide for OpenAI's traditional/stateless APIs: Chat Completions (GPT-5, GPT-4o), Embeddings,Images (DALL-E 3), Audio (Whisper + TTS), and Moderation. Includes both Node.js SDK and fetch-basedapproaches for maximum compatibility.Use when: integrating OpenAI APIs, implementing chat completions with GPT-5/GPT-4o, generating textwith streaming, using function calling/tools, creating structured outputs with JSON schemas,implementing embeddings for RAG, generating images with DALL-E 3, transcribing audio with Whisper,synthesizing speech with TTS, moderating content, deploying to Cloudflare Workers, or encounteringerrors like rate limits (429), invalid API keys (401), function calling failures, streaming parseerrors, embeddings dimension mismatches, or token limit exceeded.Keywords: openai api, chat completions, gpt-5, gpt-5-mini, gpt-5-nano, gpt-4o, gpt-4-turbo,openai sdk, openai streaming, function calling, structured output, json schema, openai embeddings,text-embedding-3, dall-e-3, image ge

Expert on building decentralized applications with Shelby Protocol storage on Aptos. Helps with dApp architecture, wallet integration (Petra), browser SDK usage, React/Vue integration, file uploads, content delivery, and building Shelby-powered applications. Triggers on keywords Shelby dApp, build on Shelby, Shelby application, Petra wallet, browser storage, web3 app, decentralized app Shelby, React Shelby, Vue Shelby.

Publishes hdwallet packages locally to verdaccio and updates them in the web repo. Use when you need to publish hdwallet locally, publish to verdaccio, run the verdaccio publish pipeline, or test hdwallet changes locally.

Use when implementing Nostr Wallet Connect (NIP-47) wallet service - provides complete patterns for generating NWC connection strings, publishing info events, listening for requests, processing wallet commands, and sending encrypted responses. Client-side patterns included for reference.

Execute tests from persistent test cases. Reads ./tests/ directory, runs cleanup, wallet setup (if Web3), executes tests, and generates report.

Encrypt and decrypt messages using BSV keys and ECDH. Uses @bsv/sdk for cryptographic operations.

Smart contracts, Ethereum, consensus mechanisms, and decentralized applications.

Analyze ANY web project - detect if Web3 DApp, research dependencies via WebSearch, understand business functions from code AND UI screenshots, generate test requirements.