NostrKey Web Extension

Securely manage your Nostr keys and sign events without exposing private keys to websites. Encrypted vault, nsecBunker support, and auto-lock protection.

NostrKey is a Safari extension for macOS and iOS that manages your Nostr identities and signs events on your behalf — your private keys never touch the websites you visit.

Features: • NIP-07 signing — works with any Nostr web app • NIP-46 nsecBunker — remote signing, your key never leaves the bunker • NIP-44 encryption — modern ChaCha20-Poly1305 messaging • Encrypted document vault — zero-knowledge storage on Nostr relays • API key vault — encrypted secret storage • Master password — keys encrypted at rest with auto-lock • Multi-profile support — manage multiple Nostr identities • Per-site permissions — control which sites can request signatures • iCloud sync — profiles, settings, and vault data sync across your Apple devices via storage.sync (Safari 16+, user-toggleable)

Your keys. Your control. No data collection. No tracking. Fully open source.