Developer-first authentication platform with passwordless login, OAuth, MFA, SSO/SCIM, device fingerprinting, and session management APIs. Free up to 10,000 MAUs.
Authentication API that handles user login, signup, MFA, SSO, and session management so you don't have to build it yourself.
Stytch takes a different approach than most auth providers. Instead of giving you a login widget to embed, it gives you API endpoints and SDKs that you wire into your own UI. This means more control over the user experience but more development work upfront.
The platform splits into two products: Consumer Authentication for B2C apps and B2B SaaS Authentication for multi-tenant applications. The B2B product adds organization management, per-org SSO configuration, role-based access control, and SCIM directory synchronization.
Passwordless authentication is Stytch's core differentiator. Email magic links, SMS/WhatsApp OTPs, passkeys (WebAuthn/FIDO2), and biometric authentication work out of the box. For applications moving away from passwords, this eliminates the most common attack vector while improving conversion rates. Stytch reports that passwordless flows reduce login friction by 30-50% compared to password-based authentication.
Device fingerprinting identifies returning devices without cookies or user interaction. This enables risk-based authentication decisions: trusted devices skip additional verification, while unknown devices trigger MFA. The fingerprinting system processes 10,000 events/month on the free tier.
Session management handles token issuance, refresh, revocation, and cross-device session sync. Sessions are stored server-side with configurable TTLs and can be revoked individually or by user. The API provides session introspection for building custom authorization logic.
The pricing model avoids cliffs. If you exceed the free tier's 10,000 MAUs or 5 SSO connections, you pay per unit above those thresholds rather than jumping to a fixed higher tier. This makes costs more predictable for growing applications.
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Stytch is the right choice for developer teams that want full control over their authentication UX and are moving toward passwordless login. The free tier is genuinely useful (10K MAUs), and the no-cliff pricing model is refreshing. The main tradeoff: you'll spend more time building the UI compared to Auth0 or Clerk, which ship pre-built components. Best for SaaS teams building B2B products with multi-tenant SSO requirements.
Email magic links, SMS/WhatsApp OTPs, TOTP, passkeys (WebAuthn/FIDO2), and biometric authentication. Multiple passwordless methods can be combined for layered security without passwords.
Use Case:
A fintech app offers passkey login for returning users on supported devices, falls back to email magic links for other users, and adds TOTP as a second factor for high-value transactions.
Per-organization SSO configuration with SAML and OIDC support. Each tenant's admin configures their own identity provider. SCIM directory sync automates user provisioning and deprovisioning.
Use Case:
A SaaS platform lets each enterprise customer connect their own Okta or Azure AD instance for SSO. When an employee is removed from the corporate directory, SCIM automatically revokes their SaaS access.
Identifies returning devices without cookies using browser and device signals. Enables risk-based authentication where trusted devices skip additional verification while unknown devices trigger step-up authentication.
Use Case:
An e-commerce platform recognizes a customer's laptop and skips MFA for repeat purchases. When the same account attempts to log in from an unrecognized device, it requires email verification.
Server-side session storage with configurable TTLs, per-session metadata, cross-device sync, and granular revocation. Sessions can be revoked individually, by user, or by organization.
Use Case:
A healthcare app sets 15-minute session timeouts for clinical users accessing patient records, 7-day sessions for admin staff, and provides a dashboard for compliance officers to revoke sessions by user or organization.
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In 2026, Stytch launched comprehensive AI agent authentication with specialized MCP integration, agent fraud detection, consent management workflows, and turnkey authorization for AI systems accessing user data across multiple services.
Security & Access
Identity platform with authentication, authorization, and user management for web, mobile, and API applications.
Security & Access
Developer-focused authentication and user management platform with drop-in React components for sign-up, sign-in, user profiles, and organization management. Features multiple auth methods, social logins, passkeys, and MFA with pre-built UI components that integrate seamlessly with Next.js, React, and Remix frameworks.
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