One Gateway.
Every Authentication Method.
Yukio's Authentication Gateway is a unified authentication layer for backend services. Deploy once, and your applications gain SMS challenge/response, SAML, OAuth/OIDC, WebAuthn, and TOTP — without reinventing auth for each service.
Public beta opening soon. We're finishing internal testing now.
Supported Methods
SMS Challenge / Response
Time-limited numeric codes delivered via SMS. Verify possession of a phone number without passwords.
SAML 2.0
Enterprise SSO using SAML assertions. Full IdP-initiated and SP-initiated flows.
OAuth 2.0 / OIDC
Standards-compliant OAuth/OIDC provider. Authorization code, PKCE, client credentials, and device flow.
WebAuthn / Passkeys
FIDO2 / WebAuthn for passwordless authentication with biometrics and hardware security keys.
TOTP / HOTP
Time-based and HMAC-based one-time passwords. Compatible with Google Authenticator, Authy, and 1Password.
Magic Links
Passwordless email authentication. One-click login links with configurable expiry and single-use enforcement.
⚠️ Service Status
Yukio's Authentication Gateway is currently in active development and is not yet available for production use. We are targeting a public beta release in the near future. This website will be updated with onboarding instructions when the beta opens. For early access inquiries, please monitor this page.