Read docs Updated 2026-06-15
What is Stytch?
Stytch is a service that provides user infrastructure components for application development.
It is useful for developers building modern applications that need authentication and user management capabilities.
What you can build with Stytch
Passwordless login flows
Implement magic links or one-time passcodes via email/SMS to authenticate users without storing passwords.
Session and JWT management
Create, validate, and revoke user sessions to secure API requests in web and mobile apps.
Adding MFA to existing apps
Layer on TOTP or passkey factors for accounts that already have basic email login.
Get started with Stytch
- 1Sign up at stytch.com and create a project to receive API keys
- 2Configure allowed auth methods and redirect URLs in the dashboard
- 3Install an official client library or call the REST endpoints directly
- 4Add login and session-handling code to your frontend and backend
- 5Test flows in sandbox mode before switching to production keys
Stytch: pros & cons
Pros
- +Clean passwordless and MFA primitives
- +Well-documented SDKs across languages
- +HTTPS-only API with API-key auth
Cons
- –Usage-based pricing can grow with volume
- –Focused on auth only, not full user data storage
- –Third-party dependency for login
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Stytch is an API that supplies authentication and session infrastructure for modern applications.
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