Creating and configuring custom service connections in Bigin Toppings

Creating and configuring custom service connections in Bigin Toppings

Hello Biginners,

Integrating Bigin with external applications extends its capabilities and enables customized functionalities. In our last post, we saw how to create a default service connection. Today, we'll see how to create a custom service connection when the application you need to integrate with isn't listed in the default services.

Consider a scenario where a team uses Bigin to manage its tasks and handles project tracking and collaboration in Trello. Keeping both the applications synchronized can be a challenging task and often requires manual data entry, which increases the risk of errors. To solve this challenge, we can create a Bigin topping with a custom service connection established with the Trello application. Using this custom service connection, we can automate the process by creating a new card inside Trello each time a new task is created in Bigin.

Let's learn how to do this.

Setting up the topping

A topping needs to be created using the Bigin Developer Center; for detailed instructions on creating a topping, refer to this post.

Once you've created the topping and accessed the Bigin Developer Console, the next steps are creating the custom service connection and configuring the topping's functionality.
  1. Navigate to the Connections section in the left panel and click the Get Started button.
  1. Under the Services section, select Custom Services, then click Create Service.
  1. Fill in the required details for the custom service in the configuration screen.
  1. Enter a name for the custom service connection under Service Name; this will automatically generate the service link name.
  2. Select the appropriate authentication type supported by the third-party application from the available options: API key, Basic Authentication, OAuth 1, OAuth 2, or AWS signature.
Notes
Note:

Refer to the official API documentation of the third-party application to determine the authentication type.
  1. Each authentication type has its own set of parameters to ensure secure integration with the third-party app. For detailed instructions on configuring each authentication type and field, refer to this guide.
  2. For integrating with Trello, we'll choose API Key, which is the authentication type supported by the Trello app. For more information on getting your API key and token, refer to the Trello API documentation. Trello requires an API key and token to authenticate with another app. They have to be configured as query parameters, so set the parameter type to Query String.
  3. In the Parameter Key fields, enter the key and token, and set their corresponding Parameter Display Names to Trello API Key and Trello Token respectively.
Notes
Note:

Providing both the key and token is essential because Trello requires these two credentials for secure API access.
The key is the unique identifier for your application, and the token is a user-specific credential that authorizes our application to access and modify Trello data.
  1. Once all the required parameters are configured, click Create Service.

After successfully creating the custom service, the next step is to establish the connection with the Trello service by clicking the Create Connection button.

  1. On the following screen, provide a connection name for your Trello integration; this name will automatically generate the Connection Link Name.
  2. Once you've entered the necessary details, click the Create And Connect button to start the connection process.
  1. You'll be prompted to authenticate your Trello account using the API key and token you got from the Trello API documentation.
  2. After entering these credentials, click Connect to authenticate and integrate your Trello account with the custom service you have created.
  1. Once the connection is established, you'll be redirected back to the Bigin Developer Console. Here, you can view the details of your custom service connection, including the connection link name, confirming that the integration with Trello is active and ready for use.

This connection link name serves as a unique identifier for your integration and will be referenced in the Deluge code.

You'll also need to create a default service connection with Bigin with the scope ZohoBigin.modules.tasks.ALL to access Task details from your Bigin account.



The next step is to set up a workflow rule to automate the card creation process. This workflow will trigger whenever a new task is created in Bigin to create a corresponding card in Trello. To do this, a custom function needs to be associated with the workflow.

To configure the workflow, navigate to the Automate section in the left panel of the Bigin Developer Console and select Workflow. Create a new workflow rule within the Tasks module, setting the trigger to activate whenever a new task is created in Bigin. For the trigger condition, choose to apply the workflow to All tasks to ensure every new task initiates the automation.

Next, associate the workflow rule with a function by selecting the Function option from the Instant Actions menu.


After providing the required function details, you'll be redirected to the Deluge editor, where you can implement the logic for creating a new Trello Card.



In the Deluge code:
  1. Retrieve the details of the newly created task from Bigin using its Task ID.
  2. Extract relevant task data such as the subject (used as the task name) and description.
  3. Identify the target Trello board and the specific list where the card should be created.
  4. Fetch all lists from the Trello board and locate the list ID that matches the desired list name. For our use case, we'll be creating the task as a card in the Trello list named "Today" so that the task created on that specific day will fall under the Today list. Later, it can be moved across other lists in Trello as its status updates.
  5. Prepare the card details using the extracted task information and the identified list ID.
  6. Create a new card in Trello using the prepared details.
The code below implements the logic for automatically creating a Trello card whenever a new task is created in Bigin.
  1. // Step 1: Get task details from Bigin
  2. taskDetails = zoho.bigin.getRecordById("Tasks",task.get("Tasks.ID"),Map(),"biginandtrello__biginconnection");
  3. // Step 2: Extract task data
  4. taskData = taskDetails.get("data").get(0);
  5. taskName = taskData.get("Subject");
  6. taskDescription = taskData.get("Description");
  7. // Step 3: Trello board and target list name
  8. boardId = "KQMtdnPX";
  9. targetListName = "Today";
  10. // Step 4: Get all lists on Trello board
  11. listsResponse = invokeurl
  12. [
  13. url :"https://api.trello.com/1/boards/" + boardId + "/lists"
  14. type :GET
  15. connection:"biginandtrello__trello"
  16. ];
  17. // Step 5: Find the list ID by name
  18. listId = "";
  19. for each listItem in listsResponse
  20. {
  21. if(listItem.get("name") == targetListName)
  22. {
  23. listId = listItem.get("id");
  24. break;
  25. }
  26. }
  27. // Step 6: Check if list exists
  28. if(listId == "")
  29. {
  30. info "List with name '" + targetListName + "' not found.";
  31. return;
  32. }
  33. // Step 7: Prepare Trello card details
  34. cardDetails = Map();
  35. cardDetails.put("name",taskName + " - From Bigin");
  36. cardDetails.put("desc",taskDescription);
  37. cardDetails.put("idList",listId);
  38. // Step 8: Create Trello card
  39. createCardResponse = invokeurl
  40. [
  41. url :"https://api.trello.com/1/cards"
  42. type :POST
  43. parameters:cardDetails
  44. connection:"biginandtrello__trello"
  45. ];
  46. // Step 9: Log Trello response
  47. info "Trello card creation response: " + createCardResponse;

For details about the API endpoints and request formats used in this code, refer to the Bigin Deluge reference library and Trello API documentation.
Now, let's test whether the topping is functioning as expected. To test the topping, click Test your Topping on the top right of the Bigin Developer Console.


You can test the topping by creating a new Task in your Bigin Sandbox account and then checking your Trello account to see if a new card is created in the specified list.



In this post, We've successfully created a custom service connection between Bigin and Trello!

By using custom service connections, you can securely integrate third-party applications with Bigin and achieve your business's use cases.

Stay tuned for more posts where we'll dive deeper into additional features and best practices for developing powerful toppings in Bigin.

      • Recent Topics

      • Quick Copy Column Name

        Please add the ability to quickly copy the name of a column in a Table or Query View. When you right-click the column there should be an option to copy the name, or if you left-click the column and use the Ctrl+C keyboard shortcut it should copy the
      • Ability to Edit YouTube Video Title, Description & Thumbnail After Publishing

        Hi Zoho Social Team, How are you? We would like to request an enhancement to Zoho Social that enables users to edit YouTube video details after the video has already been published. Your team confirmed that while Zoho Social currently allows editing the
      • How do I remove a data source from Zoho Analytics?

        I am unable to find a delte option on a datasource that i put in the system as an error. On teh web it refers to a setup icon but I do not see that on my interface?
      • Add Employee Availability Functionality to Zoho People Shift Module

        Hello Zoho People Product Team, Greetings and hope you are doing well. We would like to submit a feature request to enhance the Zoho People Shift module by adding employee availability management, similar to the functionality available in Zoho Shifts.
      • Bigin, more powerful than ever on iOS 26, iPadOS 26, macOS Tahoe, and watchOS 26.

        Hot on the heels of Apple’s latest OS updates, we’ve rolled out several enhancements and features designed to help you get the most from your Apple devices. Enjoy a refined user experience with smoother navigation and a more content-focused Liquid Glass
      • Delay in rendering Zoho Recruit - Careers in the ZappyWorks

        I click on the Careers link (https://zappyworks.zohorecruit.com/jobs/Careers) on the ZappyWorks website expecting to see the job openings. The site redirects me to Zoho Recruit, but after the redirect, the page just stays blank for several seconds. I'm
      • Is Desk Down?

        Across department - always an error. [Status Mode] - error [Table View and the rest] - working
      • Zoho Mail 505 error I can not send email

        Hi, I’m having issues sending emails from my custom domain email address. When I send emails to Outlook addresses, I receive an “Undeliverable 505” error. However, emails send and receive correctly when I use Gmail. This is important for my business,
      • How do I change the wording of the tile of SignForm?

        When my user opens a SignForm url, the title that is presented is always "SignForm signer Information" and a form is displayed asking for the username and email address. This can be confusing to the end user. How can I change the title at least (Or at
      • How to link tickets to a Vendor/Vendor Contact (not Customer) for Accounting Department?

        Hi all, We’re configuring our Accounting department to handle tickets from both customers and vendors (our independent contractors). Right now, ticket association seems to be built around linking a ticket to a Customer / Customer Contact, but for vendor-originated
      • Problem with CRM Connection not Refreshing Token

        I've setup a connection with Zoom in the CRM. I'm using this connection to automate some registrations, so my team doesn't have to manually create them in both the CRM and Zoom. Connection works great in my function until the token expires. It does not refresh and I have to manually revoke the connection and connect it again. I've chatted with Zoho about this and after emailing me that it couldn't be done I asked for specifics on why and they responded. "The connection is CRM is not a feature to
      • 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
      • Unify Overlapping Functionalities Across Zoho Products

        Hi Zoho One Team, We would like to raise a concern about the current overlap of core functionalities across various Zoho applications. While Zoho offers a rich suite of tools, many applications include similar or identical features—such as shift management,
      • Automation #7 - Auto-update Email Content to a Ticket

        This is a monthly series where we pick some common use cases that have been either discussed or most asked about in our community and explain how they can be achieved using one of the automation capabilities in Zoho Desk. Email is one of the most commonly
      • Ticket to article and Ticket to template

        Hello! I would like to know if it is possible (and how) to do the following actions: 1. To generate an article from a ticket (reply + original message) 2. Easy convert an answer to an email template
      • Is there API Doc for Zoho Survey?

        Hi everyone, Is there API doc for Zoho Survey? Currently evaluating a solution - use case to automate survey administration especially for internal use. But after a brief search, I couldn't find API doc for this. So I thought I should ask here. Than
      • Kaizen #225 - Making Query-based Custom Related Lists Actionable with Lookups and Links

        Hello everyone! Welcome back to another post in the Kaizen series! This week, we will discuss an exciting enhancement in Queries in Zoho CRM. In Kaizen #190, we discussed how Queries bridge gaps where native related lists fall short and power custom related
      • WebDAV / FTP / SFTP protocols for syncing

        I believe the Zoho for Desktop app is built using a proprietary protocol. For the growing number of people using services such as odrive to sync multiple accounts from various providers (Google, Dropbox, Box, OneDrive, etc.) it would be really helpful
      • Change the "from" field

        Hello, I used some random word to create the account ID to later host the domain based emails. That username shows up in the "from" field on test emails. How do I change that to a custom one, like first name/last name or business name? I tried to create second user and "named" it the way I want and it worked to a degree, although the "from" field shows all lower case letters, while original had some capital letters. So the "all-low-case" is another issue I am having... Thank you
      • [Free Webinar] Learning Table Series - AI-Enhanced Logistics Management in Zoho Creator

        Hello Everyone! We’re excited to invite you to another edition of Learning Table Series, where we showcase how Zoho Creator empowers industries with innovative and automated solutions. About Learning Table Series Learning Table Series is a free, 45-60
      • How to use Rollup Summary in a Formula Field?

        I created a Rollup Summary (Decimal) field in my module, and it shows values correctly. When I try to reference it in a Formula Field (e.g. ${Deals.Partners_Requested} - ${Deals.Partners_Paid}), I get the error that the field can’t be found. Is it possible
      • Zoho Creator to Zoho CRM Images

        Right now, I am trying to setup a Notes form within Zoho Creator. This Notes will note the Note section under Accounts > Selected Account. Right now, I use Zoho Flow to push the notes and it works just fine, with text only. Images do not get sent (there
      • Error Logs / Failure logs for Client Scripts Functions

        Hi Team, While we are implementing client scripts for the automation, it is working fine in few accounts but not working for others. So, it would be great if we can have error Logs for client scripts also just like custom functions. Is there any way that
      • Zoho Books blocks invoicing without VeriFactu even though it is not mandatory until 2027

        I would like to highlight a very serious issue in Zoho Books for Spain. 1. The Spanish government has postponed the mandatory start of VeriFactu to January 1st, 2027. This means that during all of 2026 businesses are NOT required to transmit invoices
      • Problem : Auto redirect from zoho flow to zoho creator

        Hi there, I've been waiting for zoho team to get back on this for last couple of days. Anyone else have the problem to access zoho flow? everytime I click on zoho flow it redirects me to zoho creator. I tried incognito mode but it still direct me to zoho
      • Why am I seeing deleted records in Zoho Analytics syncing with Zoho CRM?

        I have done a data sync between Zoho CRM and Zoho Analytics, and the recycle bin is empty. Why do I see deleted leads/deals/contacts in Zoho Analytics if it doesn't exist in Zoho CRM? How can I solve this problem? Thanks
      • Peppol: Accept Bill (Belgium)

        Hi, This topic might help you if you're facing the same in Belgium. We are facing an issue while accepting a supplier bill received by Peppol in Zoho Books. There is a popup with an error message: This bill acceptance could not be completed, so it was
      • bouncing emails

        My recurring invoices have bounced back
      • Zoho Books is now integrated with Zoho Checkout

        Hello everyone,   We're glad to be announcing that Zoho Books is now integrated with Zoho Checkout. With this integration, you can now handle taxes and accounting on your payment pages with ease.   An organization you create in Zoho Checkout can be added to Zoho Books and vice-versa. Some of the key features and benefits you will receive are:   Seamless sync of customer and invoice data With the end-to-end integration, the customer and invoice details recorded via the payment pages from Zoho Checkout
      • Sync Issue

        My Current plan only allows me with 10,000 rows and it is getting sync failure how to control it without upgrading my plan
      • Add Zoho PDF to Zoho One Tool Applications

        It should be easy to add from here without the hassle of creating a web tab:
      • JOB WISE INVOICE PROCESS

        I WANT TO ENABLE JOB WISE TRACKING OF ALL SALES AND PURCHASE
      • PDF Template have QTY as first column

        I want to have the QTY of an item on the sales orders and invoices to be the first column, then description, then pricing. Is there a way to change the order? I went to the Items tab in settings but don't see how to change the order of the columns on
      • RAG (Retrieval Augmented Generation) Type Q+A Environment with Zoho Learn

        Hi All, Given the ability of Zoho Learn to function as a knowledge base / document repository type solution and given the rapid advancements that Zoho is making with Zia LLM, agentic capabilities etc. (not to mention the rapid progress in the broader
      • In App Auto Refresh/Update Features

        Hi,    I am trying to use Zoho Creator for Restaurant management. While using the android apps, I reliased the apps would not auto refresh if there is new entries i.e new kitchen order ticket (KOT) from other users.   The apps does received notification but would not auto refresh, users required to refresh the apps manually in order to see the new KOT in the apps.    I am wondering why this features is not implemented? Or is this feature being considered to be implemented in the future? With the
      • IMAP mail after specify date

        Hi My customer's mail server is on premise and mail storage is very huge. So It never finish sync. and finally stop sync. Cloud CRM have a option like zoho mail sync mail after some date.
      • Claude + MCP Server + Zoho CRM Integration – AI-Powered Sales Automation

        Hello Zoho Community 👋 I’m excited to share a recent integration we’ve worked on at OfficehubTech: ✅ Claude + MCP Server + Zoho CRM This integration connects Zoho CRM with Claude AI through our custom MCP Server, enabling intelligent AI-driven responses
      • Search Bar positioning

        Why is the Search bar on the far right when everything is oriented towards the left?
      • Import Error: Empty values for mandatory fields - Closing Date

        Hello, I've tried multiple times to import a CVS Potential list from another Zoho account. But the error message I get is: Empty values for mandatory fields - Closing Date There are valid dates in this field, so I don't understand why this error messages
      • Feature Requests - Contact Coloured Picklist Visibility & Field Visibility During Ticket Creation

        Hi Desk Team, I have 2 feature requests for you. Since Coloured Picklists are now available in Desk, It would be great if the colours were visible on the Related Details (Contact Information) when creating a ticket. In the screenshot below, I have 2 fields
      • Next Page