Stytch Passwordless Authentication

Stytch is a passwordless authentication and session management platform that enables developers to implement login flows using magic links, one-time passcodes, OAuth social login, passkeys, and biometric authentication without storing or transmitting traditional passwords. The platform's consumer authentication API prioritizes WebAuthn-based passkeys as the primary login method, leveraging platform authenticators like Face ID, Touch ID, and Windows Hello to create credential pairs that sync across a user's devices through the operating system's secure enclave, eliminating the attack surface associated with stolen or reused passwords. Magic links send a time-limited, single-use URL to the user's email address, and when clicked, the link exchanges a cryptographic token for a session JWT without requiring a password entry. One-time passcodes send six-digit codes via email, SMS, or WhatsApp, with rate limiting and replay attack prevention built in. OAuth integration supports Google, Microsoft, Apple, GitHub, Slack, and other identity providers through a unified connection API. The session management system issues JWT access tokens with configurable lifetimes and rotating refresh tokens, with device-level session tracking that can detect and revoke compromised sessions. A device management dashboard shows users all active sessions across their devices with one-click revocation. The headless API design gives developers full control over the UI implementation, while pre-built UI components are available for teams that want a drop-in login experience. Organizations and multi-tenant configurations support B2B use cases with per-organization SSO settings and member management. SDKs are available for JavaScript, React, React Native, Go, Python, Ruby, and PHP.