---
title: "Catalyst Publishers"
url: https://docs.catalyst.zoho.com/en/signals/help/publishers/supported-events/catalyst-publishers/
description: "Publishers in Catalyst Signals are the primary source of generating and emitting events in which the targets are interested. "
last_updated: 2026-08-06T05:54:02Z
service: Signals
type: general
---

# Catalyst Publishers

Following are the default events supported for various Catalyst Publishers:

### Cloud Scale Authentication

<table class="content-table">
	<thead>
		<tr>
            <th class="w5p">No.</th>
			<th class="w20p">Display Name</th>
            <th class="w25p">API Name</th>
			<th class="w55p">Description</th>
		</tr>
	</thead>
	<tbody>
		<tr>
            <td>1</td>
			<td>User Signup</td>
			<td>`user_signedup`</td>
			<td>An event is generated when a user signs up to the app using Catalyst Authentication.</td>
        </tr>
		<tr>
            <td>2</td>
			<td>User Confirmation</td>
			<td>`user_confirmed`</td>
			<td>An event is generated when a user successfully verifies their account using Catalyst Authentication.</td>
        </tr>
		<tr>
            <td>3</td>
			<td>User Delete</td>
			<td>`user_deleted`</td>
			<td>An event is generated when a user is removed using Catalyst Authentication.</td>
        </tr>
	</tbody>
</table>

### Cloud Scale Cache

<table class="content-table">
	<thead>
		<tr>
            <th class="w5p">No.</th>
			<th class="w20p">Display Name</th>
            <th class="w25p">API Name</th>
			<th class="w55p">Description</th>
		</tr>
	</thead>
	<tbody>
		<tr>
            <td>1</td>
			<td>Item Create</td>
			<td>`cache_item_created`</td>
			<td>An event is generated when an item is created in Cache Segment.</td>
        </tr>
		<tr>
            <td>2</td>
			<td>Item Update</td>
			<td>`cache_item_updated`</td>
			<td>An event is generated when a cached item is updated in Cache Segment.</td>
        </tr>
	</tbody>
</table>

### Cloud Scale Data Store

<table class="content-table">
	<thead>
		<tr>
            <th class="w5p">No.</th>
			<th class="w20p">Display Name</th>
            <th class="w25p">API Name</th>
			<th class="w55p">Description</th>
		</tr>
	</thead>
	<tbody>
		<tr>
            <td>1</td>
			<td>Row Insert</td>
			<td>`row_inserted`</td>
			<td>An event is generated when a new row is inserted to the table in Catalyst Data Store.</td>
        </tr>
		<tr>
            <td>2</td>
			<td>Row Delete</td>
			<td>`row_deleted`</td>
			<td>An event is generated when a row is deleted in the table in Catalyst Data Store.</td>
        </tr>
		<tr>
            <td>3</td>
			<td>Row Update</td>
			<td>`row_updated`</td>
			<td>An event is generated when a row is updated in the table in Catalyst Data Store.</td>
        </tr>
	</tbody>
</table>

### Cloud Scale Stratus 

<table class="content-table">
	<thead>
		<tr>
            <th class="w5p">No.</th>
			<th class="w20p">Display Name</th>
            <th class="w25p">API Name</th>
			<th class="w55p">Description</th>
		</tr>
	</thead>
	<tbody>
		<tr>
            <td>1</td>
			<td>Object Download</td>
			<td>`ustratus_object_downloaded`</td>
			<td>An event is generated when an object is downloaded from a bucket in Stratus.</td>
        </tr>
		<tr>
            <td>2</td>
			<td>Object Upload</td>
			<td>`stratus_object_uploaded`</td>
			<td>An event is generated when an object is uploaded to a bucket in Stratus.</td>
        </tr>
		<tr>
            <td>3</td>
			<td>Object Delete</td>
			<td>`stratus_object_deleted`</td>
			<td>An event is generated when an object is deleted from a bucket in Stratus.</td>
        </tr>
        <tr>
            <td>4</td>
			<td>Object Update</td>
			<td>`stratus_object_updated`</td>
			<td>An event is generated when an object is updated in a bucket in Stratus.</td>
        </tr>
	</tbody>
</table>

<!-- ### Cloud Scale Web Client Hosting

<table class="content-table">
	<thead>
		<tr>
            <th class="w5p">No.</th>
			<th class="w20p">Display Name</th>
            <th class="w25p">API Name</th>
			<th class="w55p">Description</th>
		</tr>
	</thead>
	<tbody>
		<tr>
            <td>1</td>
			<td>Webapp Deploy</td>
			<td>`webapp_deployed`</td>
			<td>An event is generated when you deploy your application in Cloud Scale's Web Client Hosting.</td>
        </tr>
	</tbody>
</table> -->