---
schema_version: "1"
id: 537bc7f5c705c642aab0b98b3bd494f75fce7383536ed5862dedc8fe8fff62f3
title: Work with a Slack App Client
collection: developer
version: current
locale: en-us
portal_url: https://docs.salesforce.com/developer/current/en-us/salesforce-slack-sdk/apex-slack-sdk/guides/apex_ref/apex_ref_client.md
canonical_url: https://developer.salesforce.com/docs/platform/salesforce-slack-sdk/guide/apex_ref_client.html
source_site: developer.salesforce.com
content_type: documentation
content_hash: ba7e7a57a847a75a30b7bbd0c52664737cdd6d2c888273ef1e5e4ea0ed6db867
products:
  - Apex SDK for Slack (Beta)
---
# Work with a Slack App Client

Use these Apex classes to work with a Slack app client.

## AppClient Class

The `Slack.AppClient` class enables you to work with the Slack App client.

**Usage**

Before you can work with an app client, [get access to a Slack context](https://developer.salesforce.com/docs/platform/salesforce-slack-sdk/build/actions_register.md). To get access to a Slack client, use the [`Slack.App` class](https://developer.salesforce.com/docs/platform/salesforce-slack-sdk/guide/apex_ref_client_access.md).

### AppClient Methods

The following are methods for `AppClient`.

#### appsEventAuthorizationsList(req)

**Signature**

```java
public Slack.AppsEventAuthorizationsListResponse
appsEventAuthorizationsList(
  Slack.AppsEventAuthorizationsListRequest req
)
```

**Parameters**

_req_

Type: [Slack.AppsEventAuthorizationsListResponse](https://developer.salesforce.com/docs/platform/salesforce-slack-sdk/guide/apex_ref_apps.md#appseventauthorizationslistresponse-class)

**Return Value**

Type: [Slack.AppsEventAuthorizationsListResponse](https://developer.salesforce.com/docs/platform/salesforce-slack-sdk/guide/apex_ref_apps.md#appseventauthorizationslistresponse-class)

#### authTest(req)

**Signature**

```java
public Slack.AuthTestResponse authTest(Slack.AuthTestRequest req)
```

**Parameters**

_req_

Type: Slack.AuthTestRequest

**Return Value**

Type: Slack.AuthTestResponse