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

        • desbloquear cuenta

          Buenos dias  Cordial saludo Tengo una cuenta libre en zoho mail asociado a un dominio, pero uno de los usuarios se bloquea el correo porque dice que ha excedido el límite de correo, por favor podrian desbloquearla y como hago para que esta persona debe enviar sus correos sin ningun probleama. Gracias de antemano
        • Not Receiving Incoming Mail

          I can send emails from my account but I do not receive any. I originally set up forwarding and it worked for a while and then stopped. I turned off forwarding and now do not receive any emails. Could you please check what is causing this issue? Thank you
        • Making preview pane "stick"

          Hello, Is it possible to fix/dock the preview pane so that it's always there? The modern monitors are all very wide so there's plenty of space horizontally. Having the preview pane disappearing and appearing again when you click on an email message in
        • Reason:554 5.1.8 Email Outgoing Blocked

          I have been struggling to set up my email address for some time now; it's difficult to locate what I need. Additionally, I cannot send or receive any emails. I keep receiving the "Reason: 554 5.1.8 Email Outgoing Blocked" error. There doesn't seem to
        • Trouble Connecting Zoho Mail via IMAP in n8n – Need Help

          Hi everyone 👋, I'm trying to connect my Zoho Mail account to n8n using the IMAP Email Trigger node, but I'm facing issues getting it to work fully. ✅ Here's what I’ve done so far: ✅ IMAP access is enabled in my Zoho Mail settings ✅ I’m using the correct
        • Unable to send message; Reason:554 5.1.8 Email Outgoing Blocked

          Hi, I sent few emails and got this: Unable to send message; Reason:554 5.1.8 Email Outgoing Blocked And now I have few days since I cant send any email. Is there something wrong I did? Also can someone fix this please
        • Changes to the send mail Deluge task in Zoho CRM

          Hello everyone, At Zoho, we continuously enhance our security measures to ensure a safer experience for all users. As part of our ongoing security enhancements, we're making an important update on using the send mail Deluge task in Zoho CRM. What's changing?
        • Page Rules in Forms

          🚀 Dynamic Page Navigation Implementation I successfully implemented dynamic page navigation based on a user's radio button selection. The goal was to direct users to a specific, corresponding page while ensuring they only interact with the flow determined
        • Cancellation of written-off invoice

          Hi, Can I know when we cancel the write off (write back), in which FY, the reversal is recorded. It doesn't ask as to when the write off should be cancelled to reflect!. It shouldn't reflect in the year in which the invoice was written off since the Year
        • Create Invoice automated with Package

          Does anyone knows how to create an invoice from a SO when we have created the package? We do these manually. and validate that the product packed is the product invoiced (if the order is partially packed) Regards, JS
        • I want to create a mailing list, NOT a group.

          Can I create a mailing list in Zoho mail? I just want to be able to make a list of email addresses and give the list a name. Then when I type the list name, the list of email addresses will be automatically listed. When I create a group it sends an email
        • ERROR CODE :554 - Your access to this mail system has been rejected due to poor reputation of a domain used in message transfer

          This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. *****, ERROR CODE :554 - Your access to this mail system has been rejected due
        • no me llegan los correos a Zoho mail

          No puedo recibir correos pero sí enviarlos, ya hice la modificación de MX y la verificación de teléfonos, qué es lo que ocurre? gracias
        • Group Calendar as Default for adding new events, etc?

          Hi, I want to make the group calendar (that I created, if that makes a difference) the default for anything new I add to the calendar. How can I do that? thanks.
        • Bookmark Loading is Buffering

          Hi, i clicked on the bookmark tab, around yesterday and since then it's been constantly buffering and doesn't allow me to access the mail's i have tried login in and out but of no help also trying to share a screenshot of the issue around 232 kb size,
        • Zoho Webinar custom registration fields into Zoho CRM

          I am pushing webinar registrations into zoho crm as leads and this is working fine. I have added a few custom fields to my webinar registration and I wish for these fields values to get mapped into the resulting CRM lead record. I am not seeing anywhere
        • GitLab Extension for Zoho Desk: Connecting support and development for faster resolutions

          Hello everyone! We’re excited to introduce the GitLab Extension for Zoho Desk, an integration that bridges the gap between support and development teams. This allows tickets to be converted into actionable GitLab issues for faster resolutions, better
        • Download Google Drive Shared Image/File Using Deluge – Complete Guide

          Download Google Drive Shared Image/File Using Deluge – Complete Guide When working with Google Drive share links inside Deluge, many developers face a common challenge: 👉 How can we download a Google Drive file directly using Deluge? This article explains
        • How to update Acuity appointment fields from Zoho Flow?

          Hi, I need help with Zoho Flow → Acuity Scheduling integration. What I’m doing Appointment created in Acuity Zoho Flow creates a Zoho Calendar event I want to send the Zoho Calendar Event UID back into Acuity (into a custom form field) This is so that
        • No horizontal scroll bar in reports

          Hi support team, I created a pivot table report which contains many columns (in my application about 15). The problem is that there is no bottom scroll bar to display colums that does not fit within the browser page. I saw that it was possible to resize colums, but colums sizes are not saved within the session. So could you add scroll bar, and eventually make colums sizes stored in the user session ? Best regards,
        • Zoho Map integration tasks have changed - you need to "Locate all instances of Zoho Map integration tasks in your Deluge scripts by searching for the v1 marker... before 16 January 2026"

          Details of an issue specific to Zoho CRM + Deluge Functions (originally posted in this forum) can be found here: https://help.zoho.com/portal/en/community/topic/zoho-map-integration-tasks-have-changed-you-need-to-locate-all-instances-of-zoho-map-integration-tasks-in-your-deluge-scripts-by-searching-for-the-v1-marker
        • filter broke my data

          I uploaded a file recently from Sheets and it has top 2 rows frozen, with table headers in second row and each one is filterable. somehow my first 2 columns became unfiltered and no matter what I do I cannot reapply the filter?? also didn't realize they
        • Request to remove domain "greentechcoatings.vn" from previous Zoho account

          Hello Zoho Support, I would like to register the domain "greentechcoatings.vn" in my new Zoho Mail account, but I receive the message "This domain is already associated with another account". Please remove the domain from any previous/unknown account
        • Trigger actions in third-party apps using Zoho Flow

          Greetings, I hope you're all doing well. We're excited to share an enhancement to Bigin's workflow capabilities. Zoho Flow Actions are now available in Bigin, enabling you to automate tasks across third-party applications directly from your workflow and
        • Enroll, Script, Win: Hackathon 2025!

          Hello CRM Developers! Are you ready to create some magic with Client Script, Widgets and Functions in Zoho CRM? Let’s make Hackathon 2025 an unforgettable adventure! The Zoho Developer Community Hackathon 2025 is here, and it’s your time to shine! REGISTER
        • Zoho Help Desk - Not receiving emails

          Hello… I am on your trial version of help desk… and I am having trouble getting emails from Zoho Help Desk to my MS Outlook Exchange Server… So when a customer sends ticket request I am not getting an email with a notification? I have read your articles
        • Almost all Flows are being queued

          A few days ago I saw one of my Flows status was Queued. This was the first time this had ever happened. Now, almost every Flow that triggers is Queued for at least a few minutes. If I re-trigger the Flow (which causes separate problems) they sometimes
        • Employment Contract / HRMS Documents - Zoho People

          How do I create customized HR documents for disbursal from Zoho People ? Example, say offer letters ? appointment letters ? Memos ? We want to be able to preset these in one or ther other form and issue them to employees who are in Zoho People.
        • Live webinar: Craft and deliver impactful slides with Show’s desktop apps

          If you love the comfort of working on your desktop and want a setup that keeps you focused and uninterrupted, this session is made for you. We’re excited to invite you to our upcoming live webinar: "Craft and deliver impactful slides with Show's desktop
        • Enhancements to Bigin's forms

          Greetings, I hope all of you are doing well. We're happy to announce a few recent enhancements we've made to Bigin's forms. We'll go over each one in detail. Merge field support in auto-filled forms The auto-fill option in Bigin's forms lets you predefine
        • Table dimensions

          I try changing the dimensions of the table on my computer but it doesn't change. Do I have to be a premium member or does it only work on the app?
        • Direct link to Record Summary

          Hi everyone, In one of my reports, I have built a Record Summary template to display the details of one record. I would like to be able to link directly to this Record Summary once I submit a new record, without having to go to the list of records first and click on View. Is there a possibility to do so ?  Should I use the URL by passing some parameters ? Thank you very much for your help ! Guillaume
        • Amendment effective date

          Hi everyone, I noticed that the amendment effective date mentionned in my amendment is not right. Indeed, when a contract is amended several times, it states the previous amendment and their effective date. However, the effective date stated is always
        • Show both Vendor and Customers in contact statement

          Dear Sir, some companies like us working with companies as Vendor and Customers too !!! it mean we send invoice and also receive bill from them , so we need our all amount in one place , but in contact statement , is separate it as Vendor and Customer, 
        • STOCK history in zohosheets

          is it possible to get historical stock value using stock function in zoho sheets? i could not see from and to period in the helper document.
        • Auto sync Photo storage

          Hello I am new to Zoho Workdrive and was wondering if the is a way of automatically syncing photos on my Android phone to my workdrive as want to move away from Google? Thanks
        • Agent password reset

          Hi Zoho support, I would like to ask if there is a way the admin can reset a password of an agent? Regards
        • Can receive but not send messages in Zoho Mail

          Hello! I was able to configure my email client successfully in that I can receive messages just fine. However, when I send messages out, they seem to go out fine (I don't receive any errors or anything), but the recipient does NOT receive those messages.
        • Mail is sent twice!

          Been using Zoho for a while now. Installed Zoho for someone else and some weird things are happening. Mails are being sent twice. He is using Thunderbird as an email client. I already read about email being duplicated in the sent folder. But in my case
        • Can't login IMAP suddenly

          Since this evening I'm getting the error: You are yet to enable IMAP for your account. Please contact your administrator... IMAP always been enabled in my account and was workign fine for the past 7 years. Already tried turning IMAP off and on again.
        • Next Page