Stytch

Stytch is a developer-first authentication platform built to make implementing modern, passwordless authentication fast and flexible. By providing comprehensive SDKs, a clean REST API, and pre-built UI components alongside deep customization options, Stytch enables development teams to add authentication to their applications without managing complex security infrastructure.

Passwordless authentication is at the core of Stytch's differentiation. While traditional authentication platforms focus primarily on username and password flows, Stytch was built from the beginning with passwordless methods as first-class citizens. Email magic links, email one-time passwords (OTP), SMS OTP, and passkeys via WebAuthn are all supported natively and designed for seamless, low-friction user experiences.

Passkeys (WebAuthn) support in Stytch enables users to authenticate using biometric authentication (Face ID, Touch ID, fingerprint, Windows Hello) or hardware security keys. Because passkeys are phishing-resistant and require no passwords to steal, they represent the highest security level available for consumer authentication. Stytch handles the complexity of the WebAuthn protocol and its cross-browser and cross-device subtleties.

OAuth social login integrations with Google, Apple, GitHub, Facebook, Microsoft, LinkedIn, Slack, Coinbase, and other providers are available through a unified API that returns consistent user objects regardless of which provider the user authenticates with. Apple Sign-In, which requires specific handling of name data that is only provided on first login, is correctly managed.

The Session management capabilities in Stytch handle JWT issuance, session creation, validation, refresh, and revocation. Sessions are opaque tokens or JWTs that can be verified client-side or server-side. Session inactivity timeouts, absolute expiration times, and multi-factor step-up authentication requirements are configurable per application.

Stytch B2B Authentication is a specialized product for multi-tenant SaaS applications that need to support enterprise customers. It provides organization management, SAML SSO integration with any enterprise IdP, SCIM directory synchronization, Just-in-Time (JIT) provisioning, and role-based access control within organizations. This B2B product enables SaaS companies to become enterprise-ready without building complex multi-tenant identity infrastructure from scratch.

Device fingerprinting and fraud signals in Stytch's infrastructure help detect and prevent credential stuffing, bot attacks, and account takeover attempts, providing an additional security layer beyond authentication method strength.