Hello!! We're happy to announce the beginning of a new series called "Building Extensions," which aims to help guide developers in creating and developing extensions for Zoho Projects. The goal of this series is to assist developers with the extension creation process, as well as to explore the features and functionalities that are available in the developer platform to build extensions for Zoho Projects.
Extensions are essentially plugins or add-ons that extend a Zoho product's existing functionality by either enhancing itsexisting features or integrating with other applications and performing third-party actions from within the Zoho product itself. Zoho offers a developer platform named Sigma, which is intended exclusively for building extensions for various Zoho products.
In our first post of this new series, we'll look at how to create, test, and edit a Zoho Projects extension. Let's take a look at each of these topics individually.
Creating an extension using the Sigma cloud editor
- Go to Sigma and access your workspace.
- Once you enter your workspace in Sigma, you will be taken to the Extensions section in Sigma.
- You may either build a new extension entirely from scratch, or use one of Sigma's current templates to begin your extension development process.
- To begin creating an extension using a template, simply select the Extensions Gallery option in your workspace.
- Choose an extension from the options available in Zoho Projects to begin creating one with a template. When you select an extension, you will be taken to the Sigma cloud editor, where you will find a template for that extension.
- Alternatively, you can also start building an extension entirely on your own. To do this, click the New Extension button to start creating and building an extension.
- Enter a Name and Description for the extension. Choose the service as Zoho Projects.
- There are two ways you can create an extension for Zoho Projects:
➤ Using the cloud editor
➤ Using the command line interface (CLI)
- Toggle Upload Existing File to YES to build your extension using CLI, and NO to develop it using the cloud editor.
- In this post, we'll look at how to create an extension with the cloud editor. So toggle to NO, accept the terms and conditions, then click Create.
Note: We'll be exploring building extensions using CLI in our next post.
- You'll be redirected to the cloud editor for the extension you've created, where an app folder and a plugin-manifest.json file will be available by default.
- The app folder will have a defined directory structure populated automatically for the sample Zoho Projects extension. This app folder can be used to manage all of the important resources that are required for your extension.
- The plugin-manifest.json will help with the configuration of your extension. It contains a set of keys and values that determine your extension's settings.
Note: We'll go over most of these keys in detail when we get into the related feature and functionality in upcoming posts.
- When you examine the default plugin-manifest json file populated in the cloud editor, you'll find the widgets key being configured with these details for a default sample widget:
➤ A name key mapped with the sample widget name as "Projects Extension."
➤ A location key mapped with the default location as "task_tab." This key determines the location to load thewidget. Zoho Projects supports multiple locations where you can load widgets. You can select the location based on your requirements; however, the default location is the task details tab.
➤ An URL key that holds the path or location of the HTML file that will be loaded as the widget UI. By default, the path is defined as: /app/index.html.
- The cloud editor also includes a pre-populated index.html file in the app folder that will be loaded as the widget UI in the task details tab.
Now that we've looked at the folders and files that are created by default when an extension is created, let's now explore how you can test this extension in a testing environment.
Testing an extension using the cloud editor
- The Sigma cloud editor allows you to test your extension functionalities in a testing environment before publishing the extensions and installing them in a Zoho Projects portal.
- To test the extension, click Run in the cloud editor.
- You'll be taken directly to a specific portal in your Zoho Projects account. If you only have one portal, you'll be landing directly in that portal. If you have multiple portals, you'll be prompted to select the portal where you wish to test your extension.
Note: The extension's components (for example, widgets) can be tested in the portal by selecting the Run option; however, no instance of the component will be reflected on the portal until the extension is published and installed in that portal.
- Once you've entered the testing environment, click on a task to enter the task details page, because the extension you've created has a sample widget named Projects Extension in the task details tab.
- On the task details page, you can view the widget named Projects Extensions as an individual task tab. Click on the Projects Extensions tab.
- The widget will be loaded with the UI as available in the index.html file.
- Once you are done with testing your extension functionalities, switch to the cloud editor tab and click Stop.
- In what situations can we use the Run option?
➤ To run the extension for the first time in the testing environment.
➤ Whenever the plugin-manifest.json file is modified, you have to use the Run option again.
Note: If you make modifications to any other files, simply refresh the extension to see the changes; there's no need to use Stop and Run again.
➤ When you use the Stop option to end a test and then want to retest the extension, the Run option has to be used.
Editing an extension using cloud editor
- Whenever you want to make changes to your extension code, choose the Extensions section in the left panel of your Sigma workspace.
- Hover over the extension to which you want to make changes. Click on Edit Builder icon.
- You'll be taken to the cloud editor of that particular extension, then you can go ahead and make your edits.
- Alternatively, you can also click on the Extension Details icon.
- Then, click Edit Extension.
- This method will also take you to the cloud editor of the extension where you can make necessary changes.
In this post, we've covered creating an extension, testing it, and making changes to it. We hope you found this information useful. Keep following us for more information!

Sign up for a
Zoho Developer account ans start developing extensions for Zoho products using Sigma.
Recent Topics
JS SDK 8.0 – TypeError: Cannot read properties of undefined (reading 'getCacheStore') with sample code
Hello Zoho Support Team, I’m integrating the Zoho CRM JavaScript SDK v8.0 and I’m getting the error below when running your official sample. I tested directly from: https://github.com/zoho/zohocrm-javascript-sdk-8.0/blob/main/samples/create_records_sample/create_records.js
Function #55: Convert multiple quotes to single SO using Custom Button
Hello everyone, and welcome back to our series! In Zoho Books, after a quote is accepted by your customer, it can be converted into a sales order or an invoice. Often, a customer might have multiple quotes, and for easier billing or upon the customer's
Zoho One - Syncing Merchants and Vendors Between Zoho Expense and Zoho Books
Hi, I'm exploring the features of Zoho One under the trial subscription and have encountered an issue with syncing Merchant information between Zoho Expense and Zoho Books. While utilizing Zoho Expense to capture receipts, I noticed that when I submit
Rich Text For Notes in Zoho CRM
Hello everyone, As you know, notes are essential for recording information and ensuring smooth communication across your records. With our latest update, you can now use Rich Text formatting to organize and structure your notes more efficiently. By using
Time based workflow without edit/action
Hello I need help solving this problem if possible. We have Deals come into the CRM via Live Transfer which have the field properties: Stage = New Channel = Inbound Some of them don't get answered so we want these to automatically go into our Outbound
What's New - August 2025 | Zoho Backstage
Every month, Zoho Backstage grows with you. These updates aren't just features and fixes, they're about making your workday smoother, your events more impactful, and your attendees happier. We’ve listened, learned, and shaped this release to keep things
prevent selling expired items
Hello. I need to make a constraint on expired batch items not to be sold. Is it possible in Zoho Inventory? if so, then how? Thanks for further help.
Product details removed during update from other system
We maintain our product details in an other system. These details are synchronized with Zoho at the end of each day, through an API. This has worked perfectly sofar. But last Monday, all product codes and some other product data have been wiped during
Client Customer
I purchased a customer user license, but we cannot see the project I added in the customer account. I would like to ask for support on what we should do.
Add Ability to Use Zoho Finance Tags
For Zoho Finance (Books and Inventory), the current actions do not allow us to affect the tags associated with the entities in question (customers, vendors, items, etc.). Please consider adding this functionality into the actions.
Embeded Signing doesn't work on Safari Browser
We have implemented Zoho Sign in our website by using embeded signing, It works perfectly on Chrome. But it fails on Safari, We get stuck on Zoho Sign Page during redirection from Zoho Sign to our website after signing the document, Please let us know
Dataprep Webhook Limits and Cannot update column with Dataprep
I have two problems : 1 - I am using Airflow to trigger my pipeline, and when I tested it, it worked fine a couple of times. However, after that, I received an error: {"code":429,"message":"Request rate limited"}. I didn’t send too many requests — maybe
Power of Automation :: Automatic removal of project users once the project status is changed.
A custom function is a software code that can be used to automate a process and this allows you to automate a notification, call a webhook, or perform logic immediately after a workflow rule is triggered. This feature helps to automate complex tasks and
New in Zoho Forms: Google reCAPTCHA v3 for smarter spam protection
Hello form builders, Spam submissions are one of the biggest challenges when you share your forms online. They not only clutter your data but can also waste valuable time. To help you combat this without making life harder for genuine respondents, we’re
Project Management Bulletin: August, 2025
We’ve touched a grand 19 years since we started pioneering project management solutions with Zoho Projects. What started as a simple one-page interface is now a suite of products with Zoho BugTracker, Zoho Sprints, and our new debut Zoho Projects Plus,
Zoho Sign and Zoho Workdrive Integration
Hello, there. I want to know if it's possible to save a signed document from Zoho Sign in an specific folder for each signer in Zoho Workdrive. For example: If John Doe signs the document in Zoho Sign I want to save it automatically in a folder named
Office 365 and CRM mail integration: permission required
Has anyone run into this weird problem? My email server is Office 365. When I try to configure Zoho CRM to use this server, a Microsoft popup window opens requesting user and password. After entering that, I get a message in the Microsoft window saying
Empowered Custom Views: Cross-Module Criteria Now Supported in Zoho CRM
Hello everyone, We’re excited to introduce cross-module criteria support in custom views! Custom views provide personalized perspectives on your data and that you can save for future use. You can share these views with all users or specific individuals
How do you list multiple contacts for a lead?
My sales team wants to be able to add additional contacts for leads, how do we do that? Is there a different way we should be using the lead / contact functionality? Moderation update (9th September 2025): Our developers have built an extension to achieve
Modifying Three Dot Menu Options
Is there a way to modify the three dot menu options that display in a Report header? They currently display: Show As (List, Calendar, Timeline), Print, Import, Export. I'd like to remove the Show As and Print options, since they aren't applicable for
Field Not Updating in FSM Script - Service and Parts module.
Dear Team, I am reaching out regarding a script I have implemented in Zoho FSM to automate the calculation of the End of Service date based on the End of Sale date in the Service and Parts module. Overview of the script: Fetches the End_of_Sale__C and
Zadarma + Zoho CRM Integration – Missed Calls Saved as Contacts Instead of Leads
Hello everyone, I’m looking for input from anyone with experience using the Zadarma + Zoho CRM integration. Currently, I’m seeing that missed calls are automatically being created as Contacts instead of Leads. From a CRM perspective, this doesn’t make
Zoho Books | Product updates | September 2025
Hello users, We’ve rolled out new features and enhancements in Zoho Books. From PayNow payment method to applying journal credits to invoices and bills in other locations, explore the updates designed to enhance your bookkeeping experience. Integrate
How to update Multiple Users field in Quote Module from Deal Module
Scenario : Deal Module having Multiple User Field (Presales Engineer) which having more than 1 User and through Deluge Script I need to get that Users Details and need to put into Multiple User Field (Presales Engineer) of Quote Module. Note: Both Module
Auto-sync field of lookup value
This feature has been requested many times in the discussion Field of Lookup Announcement and this post aims to track it separately. At the moment the value of a 'field of lookup' is a snapshot but once the parent lookup field is updated the values diverge.
Clone a Module??
I am giong to repurpose the Vendors module but would like to have a separate but very similar module for another group of contacts called Buyers. I have already repurposed Contacts to Sellers. Is it possible to clone (make a duplicate) module of Vendors
Advance PDF creation from CRM data
I'm trying to create a PDF export of data in the CRM. My problem is I want a pretty complicated format for the data. I'm trying to export multiple modules worth of data, with nested one-to-many relationships between the modules. Along with that, I want
how to disable staff selection Zoho Booking integrated to SalesIQ?
currently there is only one Consultant in my Zoho Bookings like this I integrate Zoho Bookings into Zoho SalesIQ to create a chatbot. Unfortunately, even though I only have one consultant for a consultation, the user have to pick the consultant. It will
How to change the text in WhatsApp Zobot integrated to Zoho Booking?
I have integrated Zoho Bookings into Zoho SalesIQ, I want to change the text in WhatsApp when creating a booking in Zobot how to change those text?
Updating Subform Record from other Form
Just wanted to ask how to properly approach this. I have 2 forms and would like to trigger an auto update on the subform once record submitted. block below only updates 1 row for each recordRow in input.AV_System { AssetRecord = Site_Asset_Services[SOR_No
when I email a invoice how can i see it was sent and also were i can go to see all emails sent
when I email a invoice how can i see it was sent and also were i can go to see all emails sent?
Zoho Books - Hide Convert to Sales Order if it can't be used.
Hi Books team, I noticed that it is not possible to convert a Quote to a Sales Order when a Quote is not yet marked as accepted. My idea is to not show the Convert to Sales Order button when it is not possible to use it, or show it in a grey inactive
How do I bulk archive my projects in ZOHO projects
Hi, I want to archive 50 Projects in one go. Can you please help me out , How can I do this? Thanks kapil
Cross-Data Center Collaboration and / Or allowing users to choose DC
Dear Zoho Cliq Support Team, We are writing to request a significant enhancement to Zoho Cliq that would greatly benefit our geographically dispersed development team. Current Challenge: Currently, Zoho Cliq automatically routes users to specific data
Zoho Flow - Update record in Trackvia
Hello, I have a Flow that executes correctly but I only want it to execute once when a particular field on a record is updated in TrackVia. I have the trigger filters setup correctly and I want to add an "update record" action at the end of the flow to
New Mandatory One-Click Unsubscribe Link Overshadowing Custom Unsubscribe Link
I was recently informed by Zoho CRM Support that they are now mandated by the large email service providers like Google and Yahoo to provide a one-click unsubscribe option in the header (not the body) of all mass emails. I have a custom unsubscribe link
Send / Send & Close keyboard shortcuts
Hello! My team is so close to using Zoho Desk with just the keyboard. Keyboard shortcuts really help us to be more efficient -- saving a second or two over thousands of tickets adds up quickly. It seems like the keyboard shortcuts in Desk are only for
Is it possible to register webhooks in Zoho CRM using API?
Hello, I am trying to register a webhook in Zoho CRM programmatically (using the API). Specifically, I want to register a webhook that is fired when new Contacts are created in the CRM. I was able to setup a webhook using the UI, by creating a rule that
Calls where the local audio is shared, have echo
When another user is sharing their screen with audio, I get echo from my own voice. We tested this with multiple users, with different audio setups, and there's no obvious way to fix it. Is this a bug you could look into, or are we missing something?
Systematic SPF alignment issues with Zoho subdomains
Analysis Period: August 19 - September 1, 2025 PROBLEM SUMMARY Multiple Zoho services are causing systematic SPF authentication failures in DMARC reports from major email providers (Google, Microsoft, Zoho). While emails are successfully delivered due
Next Page