Every breach starts with leaked credentials — API keys in .env files, seed phrases in Notes. CypherKeep is a native macOS vault. 100% local, zero cloud. • AES-256-GCM + Argon2id encryption • Live API key testing — 🟢 🟡 🔴 status in real time • BIP39/SLIP39 seed phrase validation • Touch ID unlock + clipboard auto-clear • Encrypted full-text search No accounts. No telemetry. No breach surface. Built with CryptoKit + SQLCipher.