Stytch

Freemium

stytch.com

Developer-first authentication and fraud prevention platform offering passwordless logins, B2B SSO, and device fingerprinting.

About Stytch

Stytch is an API-first authentication and security infrastructure platform designed to replace vulnerable passwords with friction-free, passwordless authentication methods. Founded by former Plaid engineers, Stytch provides modular developer APIs and SDKs that enable software teams to construct custom authentication flows tailored to consumer and B2B SaaS products.

The platform combines flexible authentication primitives—such as email magic links, SMS one-time passcodes, WebAuthn passkeys, and OAuth—with Stytch Device Fingerprinting, an AI-powered fraud prevention engine. By assessing device integrity, network proxies, and browser environments during authentication, Stytch identifies and blocks account takeovers and malicious bots before they breach user accounts.

Stytch provides client and backend SDKs for JavaScript, React, Node.js, Python, Go, and Ruby, operating across low-latency global edge networks. It offers a free tier for up to 25,000 monthly active users alongside transparent usage-based pricing and enterprise contracts for B2B SAML SSO.

Key Features

Core capabilities and technical highlights of Stytch

Modular, headless authentication APIs allowing complete control over frontend user experience and branding.

Integrated AI Device Fingerprinting detecting proxies, headless browsers, and emulator farms in real time.

Comprehensive B2B identity suite supporting multi-tenant SAML SSO, OIDC, SCIM provisioning, and RBAC.

Wide passwordless coverage including WebAuthn passkeys, magic links, WhatsApp OTP, and time-based OTPs.

Popular Use Cases

How teams, developers, and creators get value from Stytch

1Build custom passwordless authentication flows using email magic links and SMS OTPs with headless developer APIs.

2Block credential stuffing bots and synthetic identity fraud at login using AI-powered Device Fingerprinting telemetry.

3Implement enterprise SAML Single Sign-On and SCIM directory sync for enterprise B2B customers in a single afternoon.

4Deploy FIDO2 biometric passkeys across mobile and web applications to eliminate user password fatigue.

Frequently Asked Questions

Common questions and answers regarding Stytch

Is Stytch free to use?

Yes, Stytch offers a free tier with up to 25,000 monthly active users for consumer auth and up to 1,000 MAUs for B2B organizations.

What is Stytch Device Fingerprinting?

It is an integrated fraud prevention tool that generates stable device identifiers and analyzes bot risk signals to prevent automated account takeovers.

Does Stytch require using pre-built UI components?

No, Stytch is primarily an API-first platform providing headless SDKs, giving developers complete freedom over custom UI styling.

Can Stytch handle enterprise B2B logins?

Yes, Stytch provides turnkey B2B authentication including multi-tenant SAML SSO, Microsoft Entra ID integration, and SCIM provisioning.

Does Stytch support passwords if needed?

Yes, while specialized in passwordless methods, Stytch fully supports secure email/password authentication with built-in strength checks.