--- lang: en title: 'API docs: authentication-jwt' keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI sidebar: lb4_sidebar editurl: https://github.com/loopbackio/loopback-next/tree/master/extensions/authentication-jwt permalink: /doc/en/lb4/apidocs.authentication-jwt.html --- [Home](./index.md) > [@loopback/authentication-jwt](./authentication-jwt.md) ## authentication-jwt package [@loopback/authentication-jwt](https://github.com/loopbackio/loopback-next/tree/master/extensions/authentication-jwt) ## Classes

Class	Description
[JWTAuthenticationComponent](./authentication-jwt.jwtauthenticationcomponent.md)
[JWTAuthenticationStrategy](./authentication-jwt.jwtauthenticationstrategy.md)
[JWTService](./authentication-jwt.jwtservice.md)
[MyUserService](./authentication-jwt.myuserservice.md)
[RefreshToken](./authentication-jwt.refreshtoken.md)
[RefreshTokenRepository](./authentication-jwt.refreshtokenrepository.md)
[RefreshtokenService](./authentication-jwt.refreshtokenservice.md)
[SecuritySpecEnhancer](./authentication-jwt.securityspecenhancer.md)	A spec enhancer to add bearer token OpenAPI security entry to `spec.component.securitySchemes`
[User](./authentication-jwt.user.md)
[UserCredentials](./authentication-jwt.usercredentials.md)
[UserCredentialsRepository](./authentication-jwt.usercredentialsrepository.md)
[UserRepository](./authentication-jwt.userrepository.md)

## Interfaces

Interface	Description
[RefreshTokenRelations](./authentication-jwt.refreshtokenrelations.md)
[RefreshTokenService](./authentication-jwt.refreshtokenservice.md)	The token refresh service. An access token expires in limited time. Therefore token refresh service is needed to keep replacing the old access token with a new one periodically.
[UserCredentialsRelations](./authentication-jwt.usercredentialsrelations.md)
[UserRelations](./authentication-jwt.userrelations.md)

## Namespaces

Namespace	Description
[RefreshTokenConstants](./authentication-jwt.refreshtokenconstants.md)	Constant values used when generating refresh token.
[RefreshTokenServiceBindings](./authentication-jwt.refreshtokenservicebindings.md)	Bindings related to token refresh service. The omitted explanation can be found in namespace `RefreshTokenConstants`.
[TokenServiceBindings](./authentication-jwt.tokenservicebindings.md)
[TokenServiceConstants](./authentication-jwt.tokenserviceconstants.md)
[UserServiceBindings](./authentication-jwt.userservicebindings.md)

## Variables

Variable	Description
[OPERATION\_SECURITY\_SPEC](./authentication-jwt.operation_security_spec.md)
[SECURITY\_SCHEME\_SPEC](./authentication-jwt.security_scheme_spec.md)

## Type Aliases

Type Alias	Description
[Credentials](./authentication-jwt.credentials.md)	A pre-defined type for user credentials. It assumes a user logs in using the email and password. You can modify it if your app has different credential fields
[RefereshTokenWithRelations](./authentication-jwt.refereshtokenwithrelations.md)
[SecuritySchemeObjects](./authentication-jwt.securityschemeobjects.md)
[TokenObject](./authentication-jwt.tokenobject.md)	Describes the token object that returned by the refresh token service functions.
[UserCredentialsWithRelations](./authentication-jwt.usercredentialswithrelations.md)
[UserWithRelations](./authentication-jwt.userwithrelations.md)