# UiPath.Studio.Activities.Api.Licensing

> In this section you can find more information on how to build activities using **UiPath.Studio.Activities.Api.Licensing**.

In this section you can find more information on how to build activities using **UiPath.Studio.Activities.Api.Licensing**.

## ILicenseApiService
:::note
This feature was introduced in UiPath.Studio.Activities.Api v21.10.
:::

Service used to retrieve license and user sign-in information.

### Methods

#### string GetLicenseEdition()

Retrieves license information as defined in [LicenseEdition](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioactivitiesapilicensing#licenseedition).

#### UserInfo GetUserInfo()

Retrieves sign-in information for the current user as defined in [UserInfoState](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioactivitiesapilicensing#userinfostate).

#### void RegisterUserInfoHandler(Action<UserInfo> userInfoStateHandler)

Registers a function to be invoked when the user state changes.

| Parameter Type | Parameter Name | Remarks |
| --- | --- | --- |
| Action<UserInfo> | userInfoStateHandler | A function that accepts a user's info as parameter which reflects the new user info state. |

## LicenseEdition
:::note
This feature was introduced in UiPath.Studio.Activities.Api v21.10.
:::

A list of license states for the current product.

### Constants

| Type | Name | Description |
| --- | --- | --- |
| string | Undefined | License not yet initialized. |
| string | Basic | License associated with the Free SKU offering. |
| string | Community | Community license. |
| string | Academic | The license offered for educational purposes. |
| string | Trial | Trial license. |
| string | Enterprise | Enterprise license. |
| string | UiPathers | License used by UiPath employees. |

## UserInfo
:::note
This feature was introduced in UiPath.Studio.Activities.Api v21.10.
:::

Information about a user's sign-in state.

### Properties

| Type | Name | Description |
| --- | --- | --- |
| string | UserInfoState | The state of the current user as defined in [UserInfoState](https://docs.uipath.com/sdk/other/latest/developer-guide/uipathstudioactivitiesapilicensing#userinfostate). |
| string | UserId | The encrypted user ID. |

## UserInfoState
:::note
This feature was introduced in UiPath.Studio.Activities.Api v21.10.
:::

A list of sign-in states for a given user.

### Constants

| Type | Name | Description |
| --- | --- | --- |
| string | SignInUnavailable | User status when the user is signed out and sign-in is unavailable. |
| string | SignedOut | User status when the user is signed out. |
| string | SignedInUnconfirmed | User status when the user is signed in but sign-in not completed. |
| string | SignedInConfirmed | User status when the user is signed in. |