> ## Documentation Index
> Fetch the complete documentation index at: https://docs-staging-fix-update-domain-refs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# Login
> Describes all the hooks and methods available to customize the Universal Login `login` screen.
The `login` screen collects the user's identifier and password. Depending on your tenant, this identifier can be an email, phone number, or username. It also supports authentication via federated identity providers and Google One Tap.
## Import
Each screen has its own set of hooks and methods. The SDK supports **partial import** and **root import** for each screen.
* Using partial import allows you to include only the code you need for your specific use case.
* Using root import allows you to load all screens from a single bundle, which is useful when you want a unified build to handle all possible screens.
```jsx Import Example theme={null}
// root import
import { useLogin } from '@auth0/auth0-acul-react';
// partial import
import {
useLogin,
// Context hooks
useUser,
useTenant,
useBranding,
useClient,
useOrganization,
usePrompt,
useScreen,
useTransaction,
useUntrustedData,
// Common hooks
useCurrentScreen,
useAuth0Themes,
useErrors,
// Utility hooks
useLoginIdentifiers,
useChangeLanguage,
// Methods
login,
federatedLogin,
googleOneTap,
pickCountryCode,
} from "@auth0/auth0-acul-react/login";
function LoginForm() {
const { login, federatedLogin } = useLogin();
return (
);
}
```
## Context Hooks
Screen-scoped hooks that provide read-only access to Auth0 context data on the `login` screen. Import them from `@auth0/auth0-acul-react/login`.
() => BrandingMembers}>
This hook provides branding configurations, such as logo, colors, and theme settings displayed on the `login` screen.
```jsx Example theme={null}
import { useBranding } from '@auth0/auth0-acul-react/login';
function CustomTheme() {
const branding = useBranding();
}
```
() => ClientMembers}>
This hook provides client-related configurations, such as `id`, `name`, and `logoUrl`, for the `login` screen.
```jsx Example theme={null}
import { useClient } from '@auth0/auth0-acul-react/login';
function AppInfo() {
const client = useClient();
}
```
() => OrganizationMembers}>
This hook provides information about the user's Organization if the login is Organization scoped. Returns `null` when no Organization context is present.
```jsx Example theme={null}
import { useOrganization } from '@auth0/auth0-acul-react/login';
function OrgSelector() {
const organization = useOrganization();
if (!organization) {
return
No organization context
;
}
}
```
() => PromptMembers}>
This hook contains data about the current prompt in the authentication flow.
```jsx Example theme={null}
import { usePrompt } from '@auth0/auth0-acul-react/login';
function FlowInfo() {
const prompt = usePrompt();
}
```
() => ScreenMembersOnLogin}>
This hook contains details specific to the `login` screen, including its configuration and context.
```jsx Example theme={null}
import { useScreen } from '@auth0/auth0-acul-react/login';
function ScreenDebug() {
const screen = useScreen();
}
```
() => TenantMembers}>
This hook contains data related to the tenant, such as `id` and associated metadata.
```jsx Example theme={null}
import { useTenant } from '@auth0/auth0-acul-react/login';
function TenantInfo() {
const tenant = useTenant();
}
```
() => TransactionMembersOnLogin}>
This hook provides transaction-specific data for the `login` screen, such as active connections, available login methods, and current flow state.
```jsx Example theme={null}
import { useTransaction } from '@auth0/auth0-acul-react/login';
function TransactionInfo() {
const transaction = useTransaction();
}
```
() => UntrustedDataMembers}>
This hook handles untrusted data passed to the screen, such as a prefilled username from URL parameters.
```jsx Example theme={null}
import { useUntrustedData } from '@auth0/auth0-acul-react/login';
function PrefilledForm() {
const untrustedData = useUntrustedData();
}
```
() => UserMembers}>
This hook provides details of the active user, including `username`, `email`, and available authentication methods.
```jsx Example theme={null}
import { useUser } from '@auth0/auth0-acul-react/login';
function UserProfile() {
const user = useUser();
}
```
LoginMembers}>
This hook returns all methods and context available on the `login` screen.
## Methods
This method authenticates the user using a Google One Tap credential, enabling one-click sign-in without redirecting to a separate login page.
```jsx Example theme={null}
import { useLogin } from '@auth0/auth0-acul-react/login';
function GoogleOneTapHandler({ credential }) {
const { googleOneTap } = useLogin();
return googleOneTap({ one_tap_credential: credential });
}
```
**Method Parameters**
The Google One Tap credential token returned by the Google Identity Services prompt.
This method redirects the user to the [Social](/docs/authenticate/identity-providers/social-identity-providers) or [Enterprise Identity Provider](/docs/authenticate/identity-providers/enterprise-identity-providers) (IdP) for authentication.
```jsx Example theme={null}
import { useLogin } from '@auth0/auth0-acul-react/login';
function SocialButton() {
const { federatedLogin } = useLogin();
return (
);
}
```
**Method Parameters**
The Social or Enterprise Identity Provider connection name.
This method submits the user's credentials to complete authentication on the `login` screen.
```jsx Example theme={null}
import { useLogin } from '@auth0/auth0-acul-react/login';
function LoginForm() {
const { login } = useLogin();
return (
);
}
```
**Method Parameters**
[LoginPayloadOptions](/docs/libraries/acul/react-sdk/API-Reference/Types/interfaces/LoginPayloadOptions).
The username or email to authenticate with.
The password for authentication.
Captcha value required when bot detection is enabled on the tenant.
Additional custom fields prefixed with `ulp-` (for example, `'ulp-custom-field'`).
This method navigates to the country code picker for phone-based login flows.
```jsx Example theme={null}
import { useLogin } from '@auth0/auth0-acul-react/login';
function PhoneLogin() {
const { pickCountryCode } = useLogin();
return (
);
}
```
## Common/Utility Hooks
useAuth0Themes} type="Hooks">
This hook gets the current theme options with flattened configuration from branding context.
useChangeLanguage} type="Hooks">
This hook returns a function for changing the display language on the current ACUL screen.
useCurrentScreen} type="Hooks">
This hook gets the current screen context and state.
useErrors} type="Hooks">
This hook reads and manages server, client, and developer errors on the screen.
useLoginIdentifiers} type="Hooks">
This hook returns a list of active identifier types (`email`, `phone`, `username`) in the current flow.
## Import
Each screen has its own set of hooks and methods. The SDK supports **partial import** and **root import** for each screen.
* Using partial import allows you to include only the code you need for your specific use case.
* Using root import allows you to load all screens from a single bundle, which is useful when you want a unified build to handle all possible screens.
```jsx Import Example theme={null}
// root import
import { useLogin } from '@auth0/auth0-acul-react';
// partial import
import {
useLogin,
// Context hooks
useUser,
useTenant,
useBranding,
useClient,
useOrganization,
usePrompt,
useScreen,
useTransaction,
useUntrustedData,
// Common hooks
useCurrentScreen,
useAuth0Themes,
useErrors,
// Utility hooks
useLoginIdentifiers,
useChangeLanguage,
// Methods
login,
federatedLogin,
googleOneTap,
pickCountryCode,
} from "@auth0/auth0-acul-react/login";
function LoginForm() {
const { login, federatedLogin } = useLogin();
return (
);
}
```
## Context Hooks
Screen-scoped hooks that provide read-only access to Auth0 context data on the `login` screen. Import them from `@auth0/auth0-acul-react/login`.