Kaizen #200 - Answering Your Questions | Authentication using Zoho CRM Python SDK

Kaizen #200 - Answering Your Questions | Authentication using Zoho CRM Python SDK



We’re incredibly excited to bring you the 200th post in our Kaizen series!

Idea
This journey has been as much about listening as it has been about sharing. And today, we’re making both count. Over the past few weeks, we’ve collected your feedback through the Kaizen feedback form added in our earlier posts. Thank you for the time and thought you’ve put into it.

Starting today, we’ll be actively addressing your most requested topics. 

Overview – OAuth 2.0 and Zoho CRM SDKs

In this Kaizen, we’ll walk you through how OAuth 2.0 authentication is handled using the Zoho CRM Python SDK, and how the SDK simplifies token refresh, storage, and management for multiple users and organizations across multiple data centers.

Introduction:


OAuth2.0 Recap:



Token Management using Zoho CRM SDKs:


Sample Project Overview

We’ve used a fully working sample project to demonstrate the OAuth flow in action.

Frontend

A static interface built using HTML, CSS, and JavaScript.
Files include:
  • index.html – login and data input page
  • script.js – client-side login and record handling
  • redirect.html – used to capture the grant token from Zoho

Backend

A Python server using Zoho CRM SDK to:
  • Authenticate users using OAuth 2.0
  • Store and manage tokens
  • Fetch and manipulate CRM records

Note:

Before running the project, you’ll need to register your client in the Zoho API Console. Once registered, use the generated Client ID and Client Secret in your server code.
If you're planning to support users across multiple Zoho Data Centers (DCs):
  • Be sure to enable Multi-DC for your client.
  • Use the same client credentials (Client ID and Secret) for all the DCs during authentication.

Implementation Demo:

How the SDK Maps Tokens to Users

One of the key challenges in multi-user apps is ensuring that each user's tokens are stored and retrieved correctly. The Zoho CRM Python SDK handles this automatically.
As part of the OAuth flow, the SDK retrieves the user's email and organization info in the background using the scopes ZohoCRM.users.READ and ZohoCRM.org.READ. It then uses this unique user–org combination to:
  • Store access and refresh tokens separately for each user
  • Automatically update tokens when a user logs in again
  • Ensure that all API calls are authorized with the correct tokens
If you're implementing Login with Zoho using the standard OAuth redirect flow, all of this is handled internally by the SDK using the user and org information retrieved during login. There’s no need to manually pass a UserSignature in the token object.
 
If you're not implementing Login with Zoho, or if you’d prefer to explicitly associate a token with a known user, you can pass a UserSignature object during initialization:
  1. from zohocrmsdk.src.com.zoho.api.authenticator import UserSignature

    user = UserSignature(email)
    token = OAuthToken(..., user_signature=user)
    Initializer.initialize(..., user=user)
This ensures the SDK can correctly identify the token's owner and separate tokens for different users or orgs in a multi-user application.

Multi-User & Multi-DC Token Management


Authentication can often be one of the trickiest parts of any integration, especially when you're dealing with multiple users, environments, and token refresh cycles. With the Zoho CRM SDKs, much of that complexity is handled for you, from generating and persisting tokens, to refreshing them silently when they expire, and managing user-org mappings behind the scenes.

We hope this Kaizen gave you a clearer picture of how to use our SDKs confidently in your apps. Try out the project, play around, and see how it all works in real time. 

If you have any queries, let us know the comments below, or send an email to support@zohocrm.com. We'd love to hear from you.


    • Recent Topics

    • Lifecycle Reports

      From data to decisions: A deep dive into ticketing system reports A lifecycle report captures and visualises the sequential states that a ticket undergoes across its lifespan. For instance, when a customer submits a support ticket for a faulty product,

    • Zoho Forms - Print Button on Forms

      Hi Forms team, I'm replicating a form for a client which is currently based on JotForm. I noticed that at the end of the form there is a button to print the completed form. I thought this would be something worth sharing and a nice to have in Zoho Forms.

    • Putting Watermark on Zoho Sheet

      Can this be done?

    • Validation function not preventing candidates under 18 or over 30 from submitting the web form

      Hello everyone, I’m trying to create a validation rule for the Candidate Webform in Zoho Recruit. I added a custom field called “Date of Birth”, and I want to make sure that candidates cannot submit the form unless their age is between 18 and 30 years.

    • Report to know the history of certain Tickets on Desk

      Hi there guys, As the title implies we're wondering if there's any way to get some kind of Report that allows us to check the History of various Tickets at the same time since as of today if we want to know that we have to check them 1 by 1 which is not

    • Advanced Usage Billing: Prepaid with Drawdown

      Picture yourself at your favourite coffee shop, Bean & Brew. You come by every morning for your usual cappuccino, and occasionally you get an extra cold brew and a muffin or two in the afternoon. Interestingly, Bean & Brew has a new idea of offering a

    • Zoho Commerce in multiple languages

      When will you be able to offer Zoho Commerce in more languages? We sell in multiple markets and want to be able to offer a local version of our webshop. What does the roadmap look like?

    • Urgent Zoho Creator down!!!???

      Now my zoho creator faced this issue. Anyone has idea? Urgent!!!

    • The Social Wall: September 2025

      Hello everyone, As we step into the fall season, some major updates are on the horizon. Meanwhile, here are the exciting updates we rolled out this September. Approvals in iOS Managing approvals just got more seamless on mobile. With this update, the

    • Introducing Detailed View for Candidates in Vendor Portal

      We’ve added a new Details sub-tab inside the Vendor Portal to help vendors easily view complete candidate information after submission. With this update, vendors can now access all candidate details, from personal information to associated job openings,

    • Zoho One Down

      Zoho Team, Checking if when the services up - currently Zoho One is down

    • How can I track which zoho users are actively using Zoho CRM

      I have several licenses of Zoho CRM. We now need to add a new user. I could purchase a new license, but before I do, I would like to see if any of our existing users are not actively using the license assigned to them. How can I determine the activity

    • Access to Detail View From HTML Snippet

      Zoho Creator displays a detail view that slides out from the right onClick of a record in a report. Am I able to access that detail view from an html snippet, e.g. click a record in a list and display the detail view? The zc_LoadIn dialog is a bit clunky,

    • Billing Management: #10 Solving Common Mistakes in Billing

      Over the past few weeks, we have explored different facets of billing, from the simplicity of traditional one-time billing to the evolving landscape of subscriptions, retainers, and usage-based models. We've unpacked how billing isn't just about sending

    • 【開催間近 - 10/17】東京 ユーザー交流会 Vol.3 参加登録 受付中！(参加無料)

      ユーザーの皆さま、こんにちは。コミュニティチームの藤澤です。 10/17(金)に、東京・新橋で「東京 ユーザー交流会 Vol.3」を開催します！ ZOHOLICSよりも小規模なイベントですので、「リアル開催はちょっと緊張する…」という方も、安心してご参加いただけます✨ 当日は、初公開の事例を2つご紹介予定です！ なお、セッション映像のアーカイブ配信は予定していないため、会場にお越しいただいた方だけが、登壇者へ直接質問したり、リアルな声を聞いたりできる貴重な機会となっています。 ーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーー

    • Loading CSS Stylesheets into HTML Snippet

      Combining html/css into a single snippet can grow quite large for a UI that has a lot of functionality/styling. To keep things tidy, are we able to pull files into an html snippet using a <link> tag? If so, what are some best practices?

    • Notes Attachments

      Two things it would be nice to have the attachment size the same as the attachments sections and it would be nice to be able to attach links like you can in the attachments section. Thank you

    • Canvas: empty images

      Hello. If I add an image field like contact photo in a Canvas design, and the field is empty, there is an ugly placeholder in its place. This doesn't happen in the standard view. In the standard view, if the contact photo is empty, nothing appears in

    • Google enhanced conversions not working

      Hi guys, I've connected Zoho CRM through Google Ads interface with the goal to setup the enhanced conversion tracking in Google Ads. I have to Zoho related conversion goals which you can see in the images below: For the conversion goal above I've setup

    • Sync Contacts with iPhone

      Is syncing the Zoho Personal Mail contacts with the iPhone (or other mobile devices) in the works?  I just dumped Yahoo & then found out that contacts sync is missing.  Importing is only a stop gap and a step backwards for me.

    • MS Teams Meeting to Zoho CRM

      Has anyone figured out a good way to push MS Teams meeting info on a trigger of "meeting end" to Zoho CRM? We're looking for a way to take attendees of a meeting and meeting duration and push it into Zoho CRM after the meeting has ended. If I can just

    • Font Size 11 - Zoho CRM Email Templates

      Our company communicates with our vendors exclusively using Calibri Font Size 11, as this is the standard formatting for professional emails. Since the CRM only allows for the selection of font sizes 10 & 12, we have been unable to utilize the CRM email

    • Calling Function via REST API with API Key gives 401 using Zoho Developer

      Hi, I created a couple of functions using the one month trial of Enterprise edition, which I was able to call using the API Key method from Postman and from an external site. Now that my trial has expired, I have created the same functions in the Developer

    • How do I move a section or element from one page to another in the NEW Zoho Sites UI

      I have a section on my home page with numerous elements within it and I'd like to move the entire section to a different page on my site so I don't have to recreate it from scratch.  Is there a way for me to do that easily? I could use a quick answer on this please.

    • Zoho Projects app update: Global Web Tabs support

      Hello everyone! In the latest version(v3.10.10) of the Zoho Projects app update, we have brought in support for Global Web Tabs. You can now access the web tabs across all the projects from the Home module of the app. Please update the app to the latest

    • Export as MP4 or GIF

      Hi, Just wondering if there's a way to export/convert a presentation to an MP4 video file or even a GIF. One use case would be to use the animation functionality to create social media graphics/charts/gifs/videos. Thanks for a great tool... Rgds Jon

    • Page Layout- Horizontal Rule

      When editing the layout of, for instance, the Potentials page, is there a way to insert a horizontal rule or white space in between fields?  I'd like to keep a group of fields in the same Section, but would like to create some seperation in order to further group together certain fields within the Section.  If this is not possible, does anybody have any other suggestions on how to create this same effect?   Thank you!

    • Zoho Books will discontinue support for older browser versions soon

      Hello users, Starting from May 15, 2024, Zoho Books will no longer support the following browser versions: Browsers Version Restrictions Firefox Browser Versions older than 100 Google Chrome Versions older than 100 Microsoft Edge Versions older than 100

    • Zoho Projects - Q3 Updates | 2025

      Hello Users, The final quarter of the year 2025 has begun, and we at Zoho Projects are all set with a plan. New targets to achieve and new milestones to reach, influenced by the lasting imprint of the past quarter. 2025's Q3 saw some new features and

    • Zoho Sheet - Printing - Page Breaks and Printing Customization

      I think the title is descriptive enough in that I cannot find help documentation on a simple task of adding in page brakes for separating pages on print. Thanks

    • Issue with Trident exe file

      Hello Team, Exe Setup file It's showing harmful for user pc please check and do needful. this message for developer team. Thanks Bhargav Purohit

    • Different languages for users

      Hello, Do you plan to enable individual users to select their languages for interface? Currently language can be changed for everyone - it looks like a settings for a whole portal, which is not good when you are working internationally. Best regards,

    • Transaction Locking with the dynamic date

      Is it possible to dynamically update dates on transaction locking. We want to lock transaction x days from today

    • Unable to change sales_order status form "not_invoiced" to "invoiced"

      I am automating process of creating of invoice from sales_orders by consolidated sales_orders of each customer and creating a single invoice per customer every month. I am doing this in workflow schedule custom function where i create invoice by getting

    • Apply Vendor Credits Automatically

      We are bulk importing Vendor credits in Zoho Books!!! Is there a way to apply vendor credits automatically to the first UNPAID bill of the Vendor?

    • Apply Vendor Credit Automatically

      Hello!!! Is there a way where in we can apply vendor credits automatically on the FIRST OUTSTANDING BILL of the vendor?? We have lots of VENDOR CREDITS ISSUES mostly!!! Applying it manually is a pain for us. Would be great if we have a way to apply the

    • Need Easy Way to Update Item Prices in Bulk

      Hello Everyone, In Zoho Books, updating selling prices is taking too much time. Right now we have to either edit items one by one or do Excel export/import. It will be very useful if Zoho gives a simple option to: Select multiple items and update prices

    • Creator problem: Edit form View not displaying whole form

      I'm having problems with the form in my database. The edit view is not showing the whole form: This is how it looks in the normal view: As you can see, there is a whole section in the bottom right of the form which is not displaying in the Edit View. This means that I can't change or delete any of these fields... Anybody had a similar problem or know a solution? Any help would be appreciated.   Cheers,

    • Vendor Master Enhancements for Faster Purchase Entry

      I’d like to suggest a few features that will improve accuracy and speed during purchase voucher entry: Automated Item Tax Preference in Vendor Master Add an option to define item tax preference in the vendor master. Once set, this preference should automatically

    • Quick Item Search & Auto-suggestion for Invoices

      Hi Team, I am facing an issue while creating invoices in Zoho Books. Currently, I have to type the full item name in the correct sequence and spelling for it to appear. For example, my item name is: "Distemper Acri Silk Special White 10kg" If I type something

    • Next Page