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.
- Navigate to the Connections section in the left panel and click the Get Started button.
- Under the Services section, select Custom Services, then click Create Service.
- Fill in the required details for the custom service in the configuration screen.
- Enter a name for the custom service connection under Service Name; this will automatically generate the service link name.
- 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.
Note:
Refer to the official API documentation of the third-party application to determine the authentication type.
- 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.
- 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.
- 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.
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.
- 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.
- On the following screen, provide a connection name for your Trello integration; this name will automatically generate the Connection Link Name.
- Once you've entered the necessary details, click the Create And Connect button to start the connection process.
- You'll be prompted to authenticate your Trello account using the API key and token you got from the Trello API documentation.
- After entering these credentials, click Connect to authenticate and integrate your Trello account with the custom service you have created.
- 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:
- Retrieve the details of the newly created task from Bigin using its Task ID.
- Extract relevant task data such as the subject (used as the task name) and description.
- Identify the target Trello board and the specific list where the card should be created.
- 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.
- Prepare the card details using the extracted task information and the identified list ID.
- 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.
- // Step 1: Get task details from Bigin
- taskDetails = zoho.bigin.getRecordById("Tasks",task.get("Tasks.ID"),Map(),"biginandtrello__biginconnection");
- // Step 2: Extract task data
- taskData = taskDetails.get("data").get(0);
- taskName = taskData.get("Subject");
- taskDescription = taskData.get("Description");
- // Step 3: Trello board and target list name
- boardId = "KQMtdnPX";
- targetListName = "Today";
- // Step 4: Get all lists on Trello board
- listsResponse = invokeurl
- [
- url :"https://api.trello.com/1/boards/" + boardId + "/lists"
- type :GET
- connection:"biginandtrello__trello"
- ];
- // Step 5: Find the list ID by name
- listId = "";
- for each listItem in listsResponse
- {
- if(listItem.get("name") == targetListName)
- {
- listId = listItem.get("id");
- break;
- }
- }
- // Step 6: Check if list exists
- if(listId == "")
- {
- info "List with name '" + targetListName + "' not found.";
- return;
- }
- // Step 7: Prepare Trello card details
- cardDetails = Map();
- cardDetails.put("name",taskName + " - From Bigin");
- cardDetails.put("desc",taskDescription);
- cardDetails.put("idList",listId);
- // Step 8: Create Trello card
- createCardResponse = invokeurl
- [
- url :"https://api.trello.com/1/cards"
- type :POST
- parameters:cardDetails
- connection:"biginandtrello__trello"
- ];
- // Step 9: Log Trello response
- info "Trello card creation response: " + createCardResponse;
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
Repeat Column merge in ZOHO writer columns doesn't allow to set max columns per row
I'm using ZOHO writer to merge data from a ZOHO CRM subform and I want it to make a table. We're using Insert Table for Column Repeat, because this is what we need. (Name of column (Teamname) and underneath that a list of names of teammembers). It works
Persisting email signals to contact timeline?
Hello there. Regarding the email signals that are logged when a contact opens an email, am I correct that these signals are not logged to a contact's timeline? Ideally, I would like to have this context available for future follow-ups, if the contact
Trouble with using Apostrophe in Name of Customers and Vendors
We have had an ongoing issue with how the system recognizes an apostrophe in the name of customers and vendors. The search will not return any results for a name that includes the mark; ie one of our vendors names is "L'Heritage" and when entering the
Really want the field "Company" in the activities module!
Hi team! Something we are really missing is able to see the field Company when working in the activities module. We have a lot of tasks and need to see what company it's related to. It's really annoying to not be able to see it.🙈 Thx!
Upcoming update to Google Drive integration in Zoho Creator
Hello everyone, We're writing to inform you about an upcoming update to how Zoho Creator integrates with Google Drive. In Zoho Creator, during actions like importing files to create an app or attaching files to fields, you can choose files directly from
Changing Account Type in Chart of Accounts
Does anyone know how to change/edit the account type for an Account name in Chart of Accounts. Zoho will not let me do this for some reason
Managing Scheduled Replies
Communication is most effective when the intended message reaches the right person at the right time. However, this can be challenging when communication occurs across different time zones. By scheduling replies, businesses can ensure that responses reach
Show price book list price
When using price books, once you add products to the price book in the Products related list you can display the Unit price which is the default list price; however, there is no option to show the price book list price. To see the price book list price
Allow Attaching Quartz Recordings to Existing Zoho Support Tickets
Hi Zoho Team, We would like to request an enhancement to how Zoho Quartz recordings integrate with Zoho Support tickets. Current Behavior: At the moment, each Quartz recording automatically creates a new support ticket. However, in many real-world scenarios:
Issue with open-rate reporting in Zoho Campaigns
Hello, Since yesterday I’ve been experiencing an issue with the open-rate reports in Zoho Campaigns. The campaigns I send appear in the reports as if none of the emails have been opened, even though I know they have. To verify this, I replicated the campaign
Can I hide empty Contact fields from view?
Some contacts have a lot of empty fields, others are mostly filled. Is there a way I can hide/show empty fields without changing the actual Layout? I would like to de-clutter my view, and also be able to add information later as I am able. I would be
Manage user roles and profiles from the Bigin app (iOS and macOS)
Hello everyone! We're happy to announce that you can manage user roles and profiles from the Bigin mobile app. The Users & Controls section has three subsections: Users, Profiles, and Roles. Users Employees who belong to your Bigin organization are called
Support Bots and Automations in External Channels
Hello Zoho Cliq Team, How are you? We actively use Zoho Cliq for collaboration, including with our external developers. For this purpose, external channels are a key tool since they work seamlessly within the same interface as all of our other channels
Zoho Books Sandbox environment
Hello. Is there a free sandbox environment for the developers using Zoho Books API? I am working on the Zoho Books add-on and currently not ready to buy a premium service - maybe later when my add-on will start to bring money. Right now I just need a
Form to PDF template
I am looking to create a Form and when information is inputted, it will merge it into a PDF template we already have. There could be multiple lines in the form and each line inputs information into a new page of a PDF template.
Writing SQL Queries - After Comma Auto Suggesting Column
When writing SQL Queries, does anyone else get super annoyed that after you type a comma and try to return to a new line it is automatically suggest a new column, so hitting return just inputs this suggested column instead of going to a new line? Anyone
Please verify my account
Hi, We have just launched our website and received media coverage in our country. Hundreds of users are signing up for our platform every day. We would like to send them a welcome email, but we are unable to do so because our ZeptoMail account has not
Subject character limit increase
We have an occasional user case where subject lines exceed 500 characters which is the ZeptoMail imposed limit. While I understand long subject lines are not "best practice", these are particular notification emails with specific information for client
Account blocked
Yesterday I got my Zeptomail account blocked due to too many hard bounces. My account is used exclusively for sending transactional emails (eg. your order has been shipped, a form has been filled, etc) and the sudden blocking impacted hundreds of websites
Nested notebooks
Dear Sir/Madam, I would like to know if it is possible to nest notebooks. It would be very helpful when there are too many, as it would improve organization. Thank you for your response. Best regards.
Cannot see correct DNS config for mail after moving domain to another provider
I have moved my domain from one provider to another and after that zoho mail stopped working (expected). Problem is, zoho mail admin panel still shows (10 hours after move) that all records are correct while I haven't changed anything in my domain DNS
Proactive Alert for Existing Open Tickets per Contact / Account
Hello Zoho Desk Team, Greetings, and hope you’re doing well. We would like to submit a feature request aimed at improving agent awareness and efficiency when handling tickets in Zoho Desk. Use case When an agent opens a ticket (new or existing), it is
Add the ability to Hide Pages in Page Rules
Hi, We have Field Rules to show and hide fields and we have page Rules, but we can't hide a page in Page Rules so it isn't completed before the previous page (And then have the Deny Rules to prevent submitting without both pages completed), we can only
Ticket resolution field - can you add links, video, and images?
Seems like the ticket resolution fields is just a text field. Any plans to add the ability to add links, images...the same functionality in the problem description box? I would like to send the customer a link to a KB article, a link to our Wiki, embed
Ticket Resolution - Add rich formatting, screenshots and attachments
The resolution field only allows plain text at the moment. Many of our resolutions involve posting screenshots as evidence, it would be great for us to be able to have rich text formatting, be able to paste screenshots and add attachments in the solution
Deprecation Notice: OpenAI Assistants API will be shut down on August 26, 2026
I recieved this email from openAI what does it means for us that are using the integration and what should we do? Earlier this year, we shared our plan to deprecate the Assistants API once the Responses API reached feature parity. With the launch of Conversations,
Deleting a memorized email address
How can I delete a memorized email address? Even though the address has been deleted from Contacts, Zoho mail still auto suggests the address when typing it into the TO field. Thanks!
CRUD actions for Resources via API
Hello, is it possible to perform CRUD actions through the API for Resources? We want to create a sync from Zoho CRM Car record to Bookings resources to create availabilities for Car bookings. For Test drives, not only the sales person needs to be available,
Kaizen #140 - Integrating Blog feed scraping service into Zoho CRM Dashboard
Howdy Tech Wizards! Welcome to a fresh week of kaizen. This week, we will look at how to create a dashboard widget that displays the most recent blog post of your preferred products/services, updated daily at a specific time. We will leverage the potential
Convert Lead Automation Trigger
Currently, there is only a convert lead action available in workflow rules and blueprints. Also, there is a Convert Lead button available but it doesn't trigger any automations. Once the lead is converted to a Contact/Account the dataset that can be fetched
I'm getting this error when I try to link an email to a deal inside the Zohomail Zoho CRM extension.
When I click "Yes, associate," the system displays an "Oops!! Something went wrong" error message. I have attached a screenshot of the issue for reference.
Zoho Sheet - Desktop App or Offline
Since Zoho Docs is now available as a desktop app and offline, when is a realistic ETA for Sheet to have the same functionality?I am surprised this was not laucned at the same time as Docs.
ZOHO add-in issue
I cannot connect ZOHO from my Outlook. I am getting this error.
Marketing Automation
L.S. Marketing Automation is and has always been part of the Zoho One bundle - according to the information provided on the Zoho Website. Why when I open Marketing Automation do I get the following message?: "Your trial has expired. We hope you enjoyed
What's New in Zoho Analytics - January 2026
Hello Users! We are starting the year with a strong lineup of updates, marking the beginning of many improvements planned to enhance your analytics experience. Explore the latest improvements built to boost performance, simplify analysis, and help you
Translation from Chinese (Simplified) to Chinese (Traditional) is not working. It randomly translated. Google Translate accurately but zoho translate is not working at all
Hi friends, The newly added language for translation. https://www.zoho.com/deluge/help/ai-tasks/translate.html "zh" - Chinese "zh-CN" - Chinese (Simplified) "zh-TW" - Chinese (Traditional) my original text: 郑这钻 (and it is zh-CN) translated traditional
The Social Playbook - January edition: Getting started with content creation
Social media isn’t just about posting some random content. It’s about why certain content works, how brands stand out, and what makes people pause mid-scroll. The Social Playbook is a monthly community series where we break all of that down. Through real
Support for Custom Fonts in Zoho Recruit Career Site and Candidate Portal
Dear Zoho Recruit Team, I hope you're doing well. We would like to request the ability to use custom fonts in the Zoho Recruit Career Site and Candidate Portal. Currently only the default fonts (Roboto, Lato, and Montserrat) are available. While these
Adding bank details to the contact through API
How to add bank-related information to the contact while creating it using API? The account number needs to be encrypted before sending it through API but not sure how to encrypt and get those values. Please guide me in this.
Font breakage in Zoho Mail Desktop Lite application for Mac
Dear Zoho Mail and Workplace Community, With the latest update of macOS Sequoia and macOS Tahoe, there has been font breakages in the email preview of Zoho Mail Desktop Lite application for Mac. This breakage is due to the corruption of the System fonts
Next Page