Kaizen 202 - Answering Your Questions | Testing and Using REST APIs in Widgets

Kaizen 202 - Answering Your Questions | Testing and Using REST APIs in Widgets



Hello Developers!

Welcome back to a fresh week of Kaizen! 

Thank you for your active participation in sharing feedback and queries for the 200th milestone. This week, we will look at the following queries related to widget:
  • Widget Testing 
  • Using REST API in Canvas Widgets: Make HTTP calls in widgets (e.g., to external tax or product APIs)
Here are the queries that we have already answered for you from this milestone:
  1. Kaizen #200 - Answering Your Questions | Token generation using the Python SDK
  2. Kaizen #201 - Answering Your Questions | Webhooks, Functions, and Schedules

Widget Testing

One of the queries we received was simply stated
Quote
Widget Testing
 without any specific context. Since the user has not provided detailed input, we are assuming this is about how to test a widget during development.

You can test your Zoho CRM widget locally using the Zoho CLI. Run the following command from the root directory of your widget project:

zet run

This launches the widget on a local server where you can validate the UI and functionality before pushing it live.


Since the localhost connection opens in a new tab and is not private, you will need to manually authorize it. 

Click Advanced, then choose Proceed to 127.0.0.1 (unsafe) to continue. 

Notes
Note

If your widget needs to access data from your Zoho CRM organization, such as fetching or updating records, it must be deployed within a Zoho CRM iframe. To do this, you should upload the widget through the Zoho CRM Widgets setup page.

We recommend using the sandbox environment in such cases before deploying the widget to your production environment.

Making HTTP Calls from Widget

Following is a query we received from a user:
Quote
Using REST API in Canvas Widgets: Make HTTP calls in widgets (e.g., to external tax or product APIs)
Yes. You can make HTTP requests to external services from any type of Zoho CRM widget using the ZOHO.CRM.HTTP object from the Widget JS SDK.

Canvas Widget - What's Supported? 

Though full widget support within Canvas is on our roadmap, currently, you can invoke widgets from a Canvas view using Client Script. This lets you render widgets inside fly-outs or pop-ups. Here is a quick start guide on how you can achieve it:

Create a Widget

1. Create a widget project and code your logic using Zoho CLI as explained in our widget help page.

2. In Zoho CRM Developer Hub, create a new widget and set the type as Button.



Create a Client Script

3. Navigate to Client Scripts in Developer Hub and click New Script.

4. You can create your script either in the Modules or Commands category based on your use case. 

For assistance, refer to the step-by-step guide on Creating Client Script and Commands.



In the Category Details section, ensure to select Canvas as the page type. Canvas views are supported in the following page contexts: List, Detail, Create, and Clone. 

Choose the one that aligns with where your widget needs to appear.


5. Here is the sample script to render widget in a pop-up. 

ZDK.Client.openPopup({
api_name: 'Canvas_Widget',
type: 'widget',
animation_type: 4, 
height: '450px',
width: '450px',
},
{
data: 'sample data to be passed to "PageLoad" event of widget'
}); 

Here is the sample script to render widget in a fly-out. 

ZDK.Client.createFlyout('myFlyout', { 
animation_type: 4, 
height: '600px', 
width: '500px'
}
);
ZDK.Client.getFlyout('myFlyout').open({ api_name: 'Canvas_Widget', type: 'widget' });

For detailed guidance, check out our Client API documentation on Pop-up and Fly-out.

You can also check out the Kaizen #99 on Rendering Widgets using Client Script for a detailed guide based on a real-time use case. 

Using REST APIs from External Applications

The ZOHO.CRM.HTTP object enables you to make secure API calls directly from the Zoho CRM widget. It acts as a proxy, routing requests through Zoho servers, which eliminates the need for external applications to support CORS.

While this SDK is primarily used for integrating third-party services, it also supports Zoho CRM API calls. This provides you with greater flexibility to:
  • Customize header and parameter structures
  • Maintain a consistent calling pattern for both internal and external APIs within the widget.
Here is a basic syntax of the SDK:

ZOHO.CRM.HTTP.<method>({
  url: "<request-url>",
  headers: {
       // Request headers as Key-value pairs
    "Authorization": "Bearer <token>" // example
  },
  params: {
    // Request params as Key-value pairs

   "ids": "1234567890" // example
  },
  body: "<stringified JSON>", // Required for POST, PUT and PATCH
})
.then(function(response) {
  console.log("Response:", response);
});

Supported Methods
  • ZOHO.CRM.HTTP.get({ ... })
  • ZOHO.CRM.HTTP.post({ ... })
  • ZOHO.CRM.HTTP.put({ ... })
  • ZOHO.CRM.HTTP.patch({ ... })
  • ZOHO.CRM.HTTP.delete({ ... })
For more detail check out the HTTP method section of JS SDK help page.

Samples using Zoho CRM Contact Roles API

Let us explore a complete CRUD (Create, Read, Update, Delete) example using Zoho CRM’s Contact Roles API.

These structures have to be used within the JS function where you are executing your code logic. 

POST Contact Roles


// Prepare the API request
        var request = {
          url: "https://www.zohoapis.com/crm/v8/Contacts/roles",
          headers: {
            Authorization: "Zoho-oauthtoken 1000.XXXXXXXXXXXXXXXXXXX265bcf20e4"
          },
          body: {
            "contact_roles": [
              {
                "name": "Sales Lead",
                "sequence_number": 1
              }
            ]
          }
        };
         // Make API call 
        ZOHO.CRM.HTTP.post(request).then(function(data) {
          console.log(data);
 })

GET Contact Roles


// Prepare the API request
var request = {
          url: "https://www.zohoapis.com/crm/v8/Contacts/roles",
          headers: {
            Authorization: "Zoho-oauthtoken 1000.XXXXXXXXXXXXXXXXXXX265bcf20e4"
          }
        };
        // Make API call 
        ZOHO.CRM.HTTP.get(request)
          .then(function(response) {
 console.log(response);
})

UPDATE Contact Roles

// Prepare the API request
        var request = {
          headers: {
            Authorization: "Zoho-oauthtoken 1000.XXXXXXXXXXXXXXXXXXX265bcf20e4"
          },
          body: {
            "contact_roles": [
              {
                "name": "Evaluator",
                "id": "5545974000000006871"
              }
            ]
          }
        };
        // Make API call 
        ZOHO.CRM.HTTP.put(request).then(function(data) {
          console.log(data);
 })

DELETE Contact Roles


// Prepare the API request
        var request = {
          params: {
            ids: "5545974000002617002"
          },
          headers: {
            Authorization: "Zoho-oauthtoken 1000.XXXXXXXXXXXXXXXXXXX265bcf20e4"
          }
        };
        // Make API call 
        ZOHO.CRM.HTTP.delete(request).then(function(data) {
          console.log(data);
 })

We hope you found this post useful. 

Let us know if you have any questions in the comments or drop us an email at support@zohocrm.com.

Cheers!

------------------------------------------------------------------------------------------------------------------------

Related Reading


------------------------------------------------------------------------------------------------------------------------

    • Sticky Posts

    • Kaizen #197: Frequently Asked Questions on GraphQL APIs

      🎊 Nearing 200th Kaizen Post – We want to hear from you! Do you have any questions, suggestions, or topics you would like us to cover in future posts? Your insights and suggestions help us shape future content and make this series better for everyone.

    • Kaizen #198: Using Client Script for Custom Validation in Blueprint

      Nearing 200th Kaizen Post – 1 More to the Big Two-Oh-Oh! Do you have any questions, suggestions, or topics you would like us to cover in future posts? Your insights and suggestions help us shape future content and make this series better for everyone.

    • Celebrating 200 posts of Kaizen! Share your ideas for the milestone post

      Hello Developers, We launched the Kaizen series in 2019 to share helpful content to support your Zoho CRM development journey. Staying true to its spirit—Kaizen Series: Continuous Improvement for Developer Experience—we've shared everything from FAQs

    • Kaizen #193: Creating different fields in Zoho CRM through API

      🎊 Nearing 200th Kaizen Post – We want to hear from you! Do you have any questions, suggestions, or topics you would like us to cover in future posts? Your insights and suggestions help us shape future content and make this series better for everyone.

    • Client Script | Update - Introducing Commands in Client Script!

      Have you ever wished you could trigger Client Script from contexts other than just the supported pages and events? Have you ever wanted to leverage the advantage of Client Script at your finger tip? Discover the power of Client Script - Commands! Commands

    • Recent Topics

    • Scriptを埋め込みたくてOn User Inputを探しているのですが・・・

      編集モードで、Scriptを埋め込みたい項目を選択し、「項目のプロパティ」パネルで、その下のほうに「フィールドアクション（Field Actions）」という見出しがあると聞いたのですが、そもそも、それが見つかりません。そのために、On User Inputなどのイベントが選べません。 画面の英語を日本語に訳しているためにわけわからん状態になっているのかも知れませんが、わかる方、いらっしゃいますか？

    • Problem with cloud query exceeded

      When making a call I get this error, It is associated with a function in node that calls external APIs This is the code //tokenConsultar = thisapp.ObtenerToken(); //input.token = tokenConsultar.get("output").toMap().get("token");

    • Showing Total of Funnel Chart Legend (With Values) Items

      Hi, We are using the funnel type chart for displaying our zCRM sales pipeline stages and associated sum of deals in each stage.  We have configured the legend to show the associated value (Deal Amount (Sum)) for each stage adjacent to the legend items (Stages). Is there a way to display the total of the values in the same chart?  For example, at the bottom of the legend or maybe as a #merge placeholder in the legend title?

    • How to Convert VCF Contacts to CSV using Excel

      Many users switch from traditional address books to digital formats like vCard and CSV. These formats allow users to easily manage their contacts. However, a difficulty comes when you need to transfer your contact information to another application or

    • Field authorization for Linking module in Zoho CRM portal

      Hi guys! Currently building a customer portal for one of my clients, and I ran into a bit of a roadblock while using a multi-select lookup field. The issue is that there is no way to hide or define access in the linking module created by this multi-select

    • Kaizen #63 - Layout Rules in Zoho CRM

      Hello and welcome to another week of Kaizen! This week, we will be discussing Layout Rules in Zoho CRM. If you need to modify the layout of a module based on user inputs, or to show or hide sections based on the value of a specific field, we have got

    • Zoho CRM Portals - allow access per account

      Hello all, I am trying to set up a portal for our customer but I seem to be hitting an obstacle and I am not sure if it is my problem or a limitation in the software. So basically the way I understand the portal Contact Email > Each Record or Related

    • Android - Writer não acentua em Português com teclado bluetooth

      Gosto muito do Zoho, tanto o Note quando o Writer. Infelizmente, o Writer sofre de um problema sério: ao usar um teclado bluetooth, forma mais cômoda de lidar com um processador de texto, os acentos (todos!) da Língua Portuguesa não são aceitos. Todos

    • Set File Upload fields as mandatory

      Currently the CRM for some reason lacks the ability to set a file upload field as mandatory So we have an issue We have a requirement that before a Deal stage is set as Deal is Won the member needs to upload a file Now for some weird reason in Zoho I

    • Editing HTML in Zoho CRM Email Template

      I am trying to create a template within the CRM email option, but need to be able to use custom HTML. There does not seem to be a way to do so.

    • Ability to CC on a mass email

      Ability to CC someone on a mass email.

    • How to make attachments mandatory

      I want the user to be unable to mark an opportunity as Closed – Won if it doesn’t have any attachments. I’ve already tried client scripts and functions, but nothing worked.

    • SLA ticket report

      From data to decisions: A deep dive into ticketing system reports Service level agreement (SLA) ticket reports in a help desk system are crucial for ensuring that services are delivered according to established commitments. They help maintain accountability

    • Zoho Backstage - PCI Compliance / Web Security

      I have a couple of questions related to Backstage and payment processing.... 1. my purchasing division is not giving approval to use Backstage yet because of some security issues. In order for us to take payments via a payment gateway like Authorize.net

    • Zoho Tables August 2025 Update: Faster and Smoother

      We’ve been working behind the scenes to make Zoho Tables faster, lighter, and more reliable. Here are the highlights: Faster Response Times Optimised the way responses are generated. Reduced memory consumption by 20–25%, leading to smoother performance

    • Video Upload from app says "unsupported aspect ratio" but is verified to be correct.

      I and my social media person are experiencing a problem where Social will not accept video uploads to Instagram. The error we receive is "unsupported aspect ratio" but looking directly at the file in question we see that the width and ratio both match

    • Disposable Email Addresses

      Dear zMail Team, Can you also bring out a few disposable email addresses for each accounts? That way occasional registrations and imminent spam from them can be largely solved right? ---- Deepak Vasudevan http://thamizhththendral.blogspot.com/

    • Zoho sheet - Zoho expense

      I want to schedule to create an expense using Zoho Sheet and flow. That is the EMI that I pay on a particular date to the bank and should be itemised, like principal and interest on the loan. Can someone help me in this regard??

    • Ability to configure a schedule/shift for each user and/or crew in Zoho FSM

      Hello, In our team of Field Agents, we have different shifts. Some field agent always work from 7:00 AM to 4:00 PM while others work the evening shift like 4:00 PM to 11:00 PM. Sometime shift are on weekdays only or on weekend. It would be great to be

    • Free webinar: Streamlining customer service paperwork with the Zoho Sign extension for Zoho Desk

      Hello Everyone! Have you been wondering about bridging the gap between digitised customer service and business paperwork? Join our free webinar to learn how you can do this by connecting Zoho Sign, our digital signature app, with Zoho Desk, our online

    • Zoho Books | Product updates | July 2025

      Hello users, We’ve rolled out new features and enhancements in Zoho Books. From plan-based trials to the option to mark PDF templates as inactive, explore the updates designed to enhance your bookkeeping experience. Introducing Plan Based Trials in Zoho

    • Mail Search should allow grouping by conversation like Gmail.

      Having switched from gmail I have found the search function hard to use. Mostly because mail is not grouped by conversation in search. If I search for a word when looking for a conversation had with someone then sometimes 10 emails will come up from the

    • Improve Zoho Learn updated article notifications

      I noticed today while updating an article, that the notification users get says "[User Name] has published article [Article Name]..." My feedback to the product team is that it would be really helpful for an end user, if the system notification differentiated

    • Safari Support

      Safari, the world's second largest browser, zoho desk does not officially or fully support. That needs to change.

    • Can I get images from an "Image Upload" field in a webhook?

      I want to send images from 2 "image upload" fields via a webhook. Is this possible?

    • Ticket closure notification - all contacts cc'd on email thread

      Hello, If a client sends an email to our service desk and cc's in other people that work at the same company - so that they are in the loop of the service request. When the we close the ticket, only the ticket owner (person who emailed us - which created

    • Inactive account cleanup policy for Zoho Sign

      Zoho Sign reserves the right to delete accounts that are license free and inactive for more than 120 days. The account deletion will be initiated only after the user receives prior email notice about possible data deletion and how to backup the data.

    • Missde API documentation for Sales Receipt

      Hi! I noticed that the Sales Receipt endpoint is not currently listed in your API documentation (https://www.zoho.com/books/api/v3/introduction/). Could you please provide any available temporary documentation for this endpoint, along with a detailed

    • Multi-currency in Zoho CRM Forecast and Reports

      As a company we have branches in 4 different countries with as many different currencies. Our Sales Teams would like to work with their local currency as much as possible. The Forecast module using only 1 currency is practically usable only by the sales

    • How to select from pricebook when creating a salesorder or quote

      I am creating a sales order and when selecting the Products I do not see any where to select from pricebooks. How do i associate this to my orders?

    • Proposal for Creating a Unique "Address" Entity in Zoho FSM

      The "Address" entity is one of the most critical components for a service-oriented company. While homeowners may change and servicing companies may vary, the address itself remains constant. This constancy is essential for subsequent services, as it provides

    • Automatic Matching from Bank Statements / Feeds

      Is it possible to have transactions from a feed or bank statement automatically match when certain criteria are met? My use case, which is pretty broadly applicable, is e-commerce transactions for merchant services accounts (clearing accounts). In these

    • I cannot find my older documents from 2024 and 2023

      I cannot find my older documents from 2024 and 2023.

    • System default SLA descriptions can't be modified

      The system default SLAs have identical descriptions for all SLA levels, but their settings differ. However, I am facing an issue where I cannot modify these descriptions and save the changes. The content of the description box can be edited but the changes

    • Customising Help Center

      Hi I don't think it is possible to add custom pages to help center? We'd like to use this as a customer portal with support tickets, FAQ/Guides, Billing and contracts. Is there any plans to add a feature like this or an alternative way to do it other

    • Replies sometimes creating separate ticket

      Sometimes when a customer responds to an email coming from Zoho Desk, instead of adding a reply to the original ticket, a separate ticket is created. This happens even though the response subject line contained the ticket number, and the person responding

    • Ticket Approvals - External Users

      The ticket approval option - we need to be able to select external users (Contacts) for approvals. Sometimes we are working with an end user and their boss needs to approve a purchase. For example, working with a cashier on a broken cash register and

    • Force Users to Ask Answer Bot a question... First

      End users will always skip talking to a bot. It would be nice if Zoho adopted the standard and forced users to first ask a question to answer bot (or zia in some fashion) and then pass to the agent if it wasn't answered. Options to force the user to speak

    • View Answer Bot conversations?

      We are trialing Zia and are experimenting with Answer Bot on our knowledge base. So far so good! Management asks me if it is possible to view Answer Bot conversations, the purpose being to look over its shoulder and confirm that it is working as des

    • Mass Email an Account

      It would be nice to mass email an account stating there is an outage at their business or something specific to an account is needed to be mass communicated. Even if it makes a ticket for every Email Out to every contact in the Account. Think: the customer

    • Next Page