Zero-knowledge proof circuit development using circom. Use when implementing arithmetic circuits for zkSNARKs, including circuit design, constraint verification, witness generation, and testing. Triggers on tasks like "create a circom circuit", "implement ZK proof", "write Merkle tree circuit", "add range proof", or any zero-knowledge cryptography implementation requiring circom.
Privacy-preserving ERC-4337 wallet development for vehicle identity and sensitive data protection. Use when implementing ERC-4337 account abstraction wallets that handle sensitive information (vehicle license plates, biometric data, personal IDs) requiring on-chain privacy. Triggers on requests like "implement ERC-4337 wallet for vehicle", "create privacy-protected account abstraction", "build wallet with vehicle number privacy", "develop ERC-4337 with ZK proof integration", or any smart contract wallet development requiring commitment schemes, deterministic address generation, and sensitive data protection.