Fenko Limited

Secure passkey storage and management

Passkey Vault is a local-first WebAuthn passkey tool for developers, testers, and advanced users who want direct control over passkey creation, storage, backup, sync, and browser fallback behavior. The extension intercepts WebAuthn registration and sign-in requests, stores passkeys in local browser extension storage, and lets you inspect, search, export, import, and sync credentials without depending on a third-party cloud account. Key features: - Local vault for WebAuthn create and get flows - Browser and OS passkey fallback when no matching vault entry exists - Disabled, all-sites, and allowlist interception modes - Searchable popup with light and dark themes - Backup and import for moving passkeys between environments - Optional cross-device sync using an encrypted Nostr-based sync chain - Developer logging, storage inspection, sync logs, and WebAuthn event tools Important: Passkey Vault is a research and developer tool. Private key material is stored in local browser extension storage. Treat extension data and exported backups as sensitive credential material.