---
title: "Overview"
url: https://docs.catalyst.zoho.com/en/sdk/javascript/v1/serverless/circuits/overview/
description: "This page describes the method to execute circuits in your application with sample code snippets."
last_updated: 2026-09-09T10:45:38Z
service: Serverless
type: general
related_links:
  - name: "Catalyst Serverless"
    url: /en/serverless/
  - name: "Circuits Help"
    url: /en/serverless/help/circuits/introduction/
  - name: "Basic IO Help"
    url: /en/serverless/help/functions/basic-io/
  - name: "Java SDK"
    url: /en/sdk/java/v1/serverless/circuits/execute-circuit/
  - name: "Python SDK"
    url: /en/sdk/python/v1/serverless/circuits/get-a-component-instance/
  - name: "REST APIs"
    url: /en/api/code-reference/serverless/circuits/execute-circuit/#ExecuteCircuit
repository:
  name: "Repository"
  url: https://github.com/catalystbyzoho/zcatalyst-sdk-js
---

# Circuits JavaScript SDK

# Overview

[Circuits](https://docs.catalyst.zoho.com/en/serverless/help/circuits/introduction/) is a Catalyst Serverless component, that enables you to orchestrate tasks and automate workflows in Catalyst. A circuit is essentially a JSON file that helps you systematically define and organize a sequence of tasks to be carried out automatically. You can code your business logic in [Basic IO functions](https://docs.catalyst.zoho.com/en/serverless/help/functions/basic-io/), and orchestrate their executions in simultaneously or concurrently.

The **Circuits JavaScript SDK** package enables you to execute the required Circuit through code.

> **Notes:**

* Circuits is currently not available to Catalyst users accessing from the EU, AU, IN, JP, SA or CA data centers.

* You will not be able to execute [Job](https://docs.catalyst.zoho.com/en/serverless/help/functions/job-functions/), [Event](https://docs.catalyst.zoho.com/en/serverless/help/functions/event-functions/), or [Advanced I/O functions](https://docs.catalyst.zoho.com/en/serverless/help/functions/advanced-io/) in a Catalyst circuit. This is because Catalyst supports the input and output of a circuit in the JSON format, that is supported by the Basic I/O functions alone.

### Prerequisites

You will need to install the following package to be able to use the Circuits SDK methods.

```sh
npm install @zcatalyst/circuits
```

> **Info:** Ensure that you have applied the [required authentication configuration](https://docs.catalyst.zoho.com/en/sdk/javascript/v1/auth-config/node-consideration/) to use the SDK methods of this component.

### Import Requirement

You will need to import the following modules to use the Circuits SDK methods.

```javascript
const { Circuits } = require('@zcatalyst/circuits');
```

### List of SDK Methods

The following table contains the list of SDK methods that can be used to perform operations with the Circuits component through code.

<table border="1" cellpadding="8" cellspacing="0">
  <thead>
    <tr>
      <th>Category</th>
      <th>SDK Method</th>
      <th>Required Scope</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>General Operations</td>
      <td>[Get Circuit Instance](https://docs.catalyst.zoho.com/en/sdk/javascript/v1/serverless/circuits/get-circuit-instance/)</td>
      <td>**No requirement**</td>
    </tr>
    <tr>
      <td>Circuit Operations</td>
      <td>[Execute Circuits](https://docs.catalyst.zoho.com/en/sdk/javascript/v1/serverless/circuits/execute-circuit/)</td>
      <td>**Admin**</td>
    </tr>
  </tbody>
</table>