---
title: "Register the Client"
url: https://docs.catalyst.zoho.com/en/tutorials/leadmanager-appsail/springboot/register-client/
description: "Build a Lead Manager application and host it on AppSail. The app connects to your Zoho CRM account using Catalyst connectors, and enables you to view, create, update, or delete leads from the Leads module in your CRM."
last_updated: 2026-08-17T12:16:04Z
service: All Services
type: tutorial
related_links:
  - name: "Catalyst Authentication"
    url: /en/cloud-scale/help/authentication/introduction/
  - name: "Social Logins"
    url: /en/cloud-scale/help/authentication/social-logins/introduction/
---

# Register the Client

We must now register the client application in the [Zoho API console](https://api-console.zoho.com/) to generate the following credentials:

- `Client ID`: The unique key generated for a registered client
- `Client Secret`: The secret value generated for a registered client’s `Client ID`

The `Client ID` and `Client Secret` are added to the backend and frontend code in several places. These values are necessary to generate the `Access Token` and `Refresh Token` initially, and later to refresh the `Access Token` using the `Refresh Token`.

To register the client application in the Zoho API console:

1. Visit the [Zoho API Console](https://api-console.zoho.com/) and click **Get Started**.
    ![catalyst_tutorials_lead_manager_appsail_api_console_start](https://catalyst-docs-development.zohostratus.in/images/tutorials/leadmanager-appsail/catalyst_tutorials_lead_manager_appsail_api_console_start.webp)

2. Select **Server-based Applications** as the client type.
    ![catalyst_tutorials_leadmnager_appsail_appsail_api_console_client_sel](https://catalyst-docs-development.zohostratus.in/images/tutorials/leadmanager-appsail/catalyst_tutorials_leadmnager_appsail_appsail_api_console_client_sel.webp)

3. Enter "`LeadManagerApp"` as the **Client Name**.
    ![catalyst_tutorials_leadmanager_appsail_api_console_client_nme](https://catalyst-docs-development.zohostratus.in/images/tutorials/leadmanager-appsail/catalyst_tutorials_leadmanager_appsail_api_console_client_nme.webp)

4. Provide the other details in the following format:
    - Homepage URL: **AppSail application URL**
    - Authorized Redirect URIs: **AppSail applicationURL/generateToken**
    ![catalyst_tutorials_leadmanager_appsail_adding_first_api_console_uri](https://catalyst-docs-development.zohostratus.in/images/tutorials/leadmanager-appsail/catalyst_tutorials_leadmanager_appsail_adding_first_api_console_uri.webp)

    Replace {**AppSail applicationURL**} with the application URL you acquired when you deployed your project earlier in this [step](https://docs.catalyst.zoho.com/en/tutorials/leadmanager-appsail/springboot/init-project/#deploy-the-application).

5. You will need to add another **Authorized Redirect URI** for the client. We will serve the app through a **localhost** to test it after configuring the code. Because this will be redirected to a local domain, we must add that as another authorized redirect URI.
    ![catalyst_tutorials_leadmanager_appsail_apiconsole_register_client_uris](https://catalyst-docs-development.zohostratus.in/images/tutorials/leadmanager-appsail/catalyst_tutorials_leadmanager_appsail_apiconsole_register_client_uris.webp)

> **Info:** When you serve an application locally from the CLI, it is hosted from `port 3000` by default, unless the port is otherwise occupied. So ensure you are adding the domain accordingly.

6. Click **Create**.
    ![catalyst_tutorials_leadmanager_appsail_client_id_client_scrt](https://catalyst-docs-development.zohostratus.in/images/tutorials/leadmanager-appsail/catalyst_tutorials_leadmanager_appsail_client_id_client_scrt.webp)

The API console will generate and display the `Client ID` and `Client Secret` values for the registered client.

You will need to copy these values and paste them into the frontend and backend code of your application. We will discuss this in the following sections.