PostEx Auth SDK

PostEx Authentication SDK (v1.4.0) provides a comprehensive solution for implementing secure authentication in web applications. Supports WebAuthn/Passkeys, OTP verification, magic link authentication, and DPoP (RFC 9449 compliant token binding). Features include multi-factor authentication, automatic token management, trusted device recognition, and browser feature detection. Ships TypeScript types. Active development with regular releases. Differentiators: includes DPoP support and passkey-first approach.