Kaizen 200 - OAuth and Token Management using Zoho CRM Python SDK

Kaizen 200 - OAuth and Token Management 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.


    • 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

    Nederlandse Hulpbronnen


      • Recent Topics

      • Debugging `try` blocks : Tip

        I find it annoying that if one line inside a `try` block has an error, the Deluge arser points the beginning of the block to the location of the error. BUT, if you temporarily comment out the initial `try {`  The parser goes through the whole block and
      • [Product Update] TimeSheets module is now renamed as Time Logs in Zoho Projects.

        Dear Zoho Analytics customers, As part of the ongoing enhancements in Zoho Projects, the Timesheets module has been renamed to Time Logs. However, the module name will continue to be displayed as Timesheets in Zoho Analytics until the relevant APIs are
      • Use approval workflow comments in record scripts

        Greetings, i'm running an approval workflow for my records, during approval/rejection there is a step where comments are entered. i want to add there comments to the record and to use them in various deluge scripts like sending emails and so on.  how
      • ZOHO Store

        Not able to make a payment We are using Zoho One, and we are from India. The payment currency, which shows for us, is in USD. But the system says we can choose Country/Region India if it shows INR only. Attaching screenshots for more info.
      • Support Migration into Aliases in Zoho Mail

        Hello Zoho Mail Team, How are you? We are in the process of migrating some of our users from Google Workspace (Gmail and Google Drive) to Zoho. During this process, we noticed that Zoho Mail currently only supports migration into a primary mailbox and
      • API for Z Workdrive Flow Make-Integromat ?

        We are zoho workdrive fans Also we would like to have an api to work with Zoho Flow or with Make better known by its old name INTEGROMAT Is it planned and when? 3 months -6 months or more?
      • Apps Pane no longer visible

        I have read all the info and help and nothing works, I do not have a "show apps" anywhere and I can no longer see my Apps pane in the left hand side of mail, please advise how to get this back
      • Canvas View - Print

        What is the best way to accomplish a print to PDF of the canvas view?
      • 5名限定 課題解決型ワークショップイベント Zoho ワークアウト開催のお知らせ(8/21)

        ユーザーの皆さま、こんにちは。Zoho ユーザーコミュニティチームの藤澤です。 8月開催のZoho ワークアウトについてお知らせします。 今回はZoomにてオンライン開催します。 ▷▷参加登録はこちら:https://us02web.zoom.us/meeting/register/eVOEnBsSQ2uvX4WN5Z5DeQ ━━━━━━━━━━━━━━━━━━━━━━━━ Zoho ワークアウトとは? Zoho ユーザー同士で交流しながら、サービスに関する疑問や不明点の解消を目的とした「Zoho
      • New in Zoho Forms: Inline OTP Verification

        Hello form builders, We are excited to announce the launch of Inline OTP Verification in Zoho Forms, a smarter way to ensure the authenticity of the contact details you collect. Until now, OTP Verification in Zoho Forms worked as a pre-access step: respondents
      • Zoho Mail : Associate emails with Meeting records and allow multiple emails to be assocaited at once

        Is there a workaround that would allow either of these? I want to associate emails with Meeting records. I also would like to be able to select multiple emails at once for association with a record.
      • Create task from email

        Is there a way on mobile to create a task from an email? I use this feature a lot and when traveling now I read email on mobile. By the time I get to my office I forget about them since I didn't add it to a task. Is this feature missing on moble?
      • Zoho Socials - Unable to view Channels and SmartQ

        Hi, The channel Facebook has been added by the admin, however, it is not visible on the User level (employee). Other channels are visible. Also, we have the premium account, and SmartQ is not working. Can anyone help? Regards, Priyanka
      • Eliminating Manual Consolidation: Automating Currency Field Sync from Task to Project

        Hello Everyone, A Custom function is a user-written set of code to achieve a specific requirement. Set the required conditions needed as when to trigger using the Workflow rules (be it Tasks / Project) and associate the custom function to it. Requirement:
      • We want to set the "Converted from Lead" value in Deals using a Workflow or via a Deluge script. How?

        For use in Zoho Analytics, we need the field "Converted from Lead" filled in our deal records. This field is empty everywhere, because we do not create deals directly when converting a lead to a contact. We want to do that using the API or a workflow
      • Sales Orders: Quoted_Items + items in another subform -> into Ordered_Items ?

        hello, When creating Sales Orders, is it posible to inherit/fill the Ordered_Items with all the items from Quoted_Items + all the items from a customized subform with similar fields? Since you can create a sales order in different ways (convert, new -
      • How to cancel the GSTR1 pushed to GSTN

        How to cancel the GSTR1 Pushed to GSTN, some rectifications to be done in HSN & SAC code
      • Zoho Books API — Invalid Operation Type / Scope does not exist

        Hello Team, We are unable to use the Zoho Books API from our registered application. We’ve already: Created a client in Zoho API Console using (Admin in Books) Generated the OAuth code and token successfully Used the correct scopes: ZohoBooks.fullaccess,ZohoOauth.userinfo.READ
      • Enhancements in Canvas

        Dear All, Greetings! Canvas lets you design the record details page to suit your brand or business preferences. We are glad to introduce the following enhancements to uplift your design experience. Reusable Components Style Presets Let's go! Reusable
      • Minimum order quantity

        Is there a way to enforce a minimum order quantity - ie has to have a minimum of 250?
      • 【Zoho CRM】ポータル機能のアップデート:UIとポータルの作成フローの変更

        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。 今回は「Zoho CRM アップデート情報」の中から、ポータル機能のアップデートをご紹介します。 目次 概要 ユーザーグループの作成フローの変更 ユーザーグループ詳細画面内のタブについて 「タブと権限」タブについて 「設定」タブについて 概要 UIとポータルの作成フローが変更されました。ポータルの新機能に先立ち、UIを一部変更しました。タブやオプションの配置を見直し、機能へよりアクセスしやすくなっています。 また、「ポータルユーザーの種類」は今後、「ユーザーグループ」と呼称され、ページ上のボタンも「ユーザーグループを作成する」に変更されます。
      • Tax on Imported goods charged by Shipping Company

        Hi Folks, I imported goods from outside Canada, for better understanding I will give an example data. imported goods value: 2000$ The shipping company sent me an invoice containing the following information: Custom duty on imported goods: 400$ Administration
      • Prefilled Date fields auto-changed and then locked when using “Edit as new”

        If a document out for signature has date fields (not SignedDate fields) that were pre-filled before sending, and then you use “Edit as new” to create a new version of the same document, the value of those date fields gets automatically changed to today
      • Zoho Webinar via Social Media

        Hello, is it possible to stream a Zoho Webinar via Social Media like Linkedin or Facebook?
      • Add Hebrew & RTL Support to Feedback Widget

        Hello Zoho Desk Team, How are you? We are using Zoho Desk and would like to utilize the Feedback Widget. While Zoho Desk itself supports Hebrew and RTL, the Feedback Widget unfortunately does not. We kindly request that Hebrew and full RTL support be
      • OAUTH2 isn't working with Power Automate and N8N (Zoho Desk)

        Hello, I am trying to set up an OAuth2 connection to the Zoho Desk API, but the authentication flow fails immediately. I am experiencing this issue in two separate platforms: Microsoft Power Automate (using a Custom Connector) and n8n. Instead of being
      • Kit Items Breaking Automations - "Provide mapped components for all kit items"

        This has been brought up in other threads, but I believe this issue warrants its own topic. Whenever a sales document (Estimate, Sales Order, Invoice) is created or manipulated programmatically, trying to include a Kit as an Item throws this error: "Provide
      • Show item Cost value on Item screen

        The Item screen shows Accounting Stock and Physical Stock. It would be very helpful if value information could be displayed here as well, for instance Cost Price. Currently, to find the Cost Price (as used for inventory valuations) from inside the item
      • Mark shipment as delivered via api

        Hellloooo again Zoho guys !! More help required if you would be so kind, pleeeezz..... var options =        {         'method' : 'post',         'contentType' : 'application/json',         'muteHttpExceptions' : true       }; var myPackNo  = encodeURIComponent('###################');
      • Setting Alternative units for an item.

        Hello Team, How to create alternate units for an item. We are placing orders for stocks in boxes. One box contain 24 items. At the time of selling we have two categories of buyers wholesalers and retailers. So the sales will be in PCS and in boxes also.
      • Zoho Inventory search when adding items to SO/PO, etc.

        I do not see that Zoho Inventory searches within the item name for an item lookup. We have many products with variants. So when I search for a product, say a lighting system, and it comes in different sizes and colors, I can only get those products where
      • Item Group Attributes

        Hello, I would like to see more attributes under grouped items. We sell car parts, there are several suppliers for the same part but under different brands. We want to group them together but the attributes under groups are lacking. For example, the products
      • Remove HTML Format - Deluge

        Hello @all if you want to delete the HTML format from the text please follow the script. Data = "Text"; info Data..replaceAll("<(.|\n)*?>" , "").replaceAll("&nbsp;" , " "); Apart from this if you require anything please let me know Thanks & Regards Piyush
      • Using multiple languages in template

        I wanted to add the company name in the template in arabic. I found a way through the header and footer option, except when i print the quotation the arabic disappears both in the top and bottom of the page. I have attached pictures of the before and
      • ADDING 5% VAT TO PURCHASE ORDERS GENERATED ON ZOHO BOOKS UAE

        Please guide on how to add 5% VAT to Purchase Orders generated on ZOHO Books UAE edition.
      • Import from /csv file, some items fail with the error "Specify Tax Or Tax Exemption".

        Hello! I am trying to import a csv file of all of my expenses for a complete financial year. I get errors for some items with the error message "Specifiy Tax or Tax Exemption". These errors only occur on lines where I have "Postage" as the expense account.
      • About maximum number of requests per minute

        Hi, Our company has integrated Zoho inventory and we're using the shipping order creation and update functions and so on. Currently we're receiving "For security reasons you have been blocked for some time as you have exceeded the maximum number of requests
      • Approval - Report/Views

        Hi, On Zoho Desk - Is there a way to report on pending approvals, or a view or similar?
      • "Zoho CRM Integration" option is missing in Zoho Social Settings

        I am trying to integrate my Zoho Social account with my Zoho CRM account. I am on the Professional Trial plan and my user role is "Brand Admin". However, I cannot find the "Zoho CRM Integration" or "Lead Generation" option anywhere in my Zoho Social settings.
      • Zoho CRM still doesn't let you manage timezones (yearly reminder)

        This is something I have asked repeatedly. I'll ask once again. Suppose that you work in France. Next month you have a trip to Guatemala. You call a contact there, close a meeting, record that meeting in CRM. On the phone, your contact said: "meet me
      • Next Page