HubSpot's March 2025 update introduces significant developer updates. Providers can now create marketplace listings in any language to enhance global reach, and Custom Workflow Actions now support 14 languages. The Calling Extensions SDK includes inbound calling integration and a redesigned development server interface, streamlining workflows. New app install processes mandate consistent user experience with feature discovery cards, while separate permissions for app installation and uninstallation give admins greater control. A public API for property validation aids in maintaining data accuracy, and a public beta will automatically deactivate exposed tokens by April 2025. The Subscriptions API facilitates creating and managing subscriptions and automates invoicing and payments. Additionally, an interactive guide in the Design Manager helps developers get started quickly.
For additional details, please see below.
We've eliminated the language restriction in the marketplace listing flow, allowing providers to create listing pages in any language regardless of their app's officially supported languages. Providers now have the flexibility to tailor marketplace pages for specific regional markets without technical limitations, expanding their global reach. The update is effective immediately, and no additional implementation is required.
We've expanded language support for the Custom Workflow Actions, adding seven new languages, bringing our total to 14 supported languages: English, French, German, Japanese, Spanish, Brazilian Portuguese, Dutch, Polish, Swedish, Italian, Danish, Finnish, Norwegian, and Traditional Chinese (Taiwan).
The expansion helps global teams navigate and implement automation more effectively by improving accessibility for non-English speakers. It also makes it easier for developers to build and use various labels to provide a seamless localized experience for end-users. Developers can use these new language labels immediately in their custom workflow actions.
We've expanded the Calling Extensions SDK to include inbound calling support. This update allows developers to integrate third-party calling applications (Aircall, RingCentral, etc.) with HubSpot, enabling users to receive inbound calls from any page within the CRM.
Key Functionality:
Reminder: This is for general CRM calling, not Help Desk channels.
Developer Resources:
The local development server now features a modern, unified interface that simplifies your preview workflow across all HubSpot development approaches: CMS React projects, HubL projects, and legacy HubL themes.
Benefits:
Functionality:
When you start your local development server, you'll now see:
The server automatically detects your project type and provides the appropriate preview environment, eliminating the need to manually configure or select between React and HubL servers.
Check out this recent Developer HUG event featuring the new UI to see a walkthrough.
Learn more about the local development server.
We've updated the process for listing apps in the app marketplace to provide a unified experience for customers. These changes currently only affect developer accounts created after March 5th, 2025. Accounts and apps created prior to this date will still have the previous functionality for the listing process.
Apps in these accounts will no longer be able to set a custom URL for the app's install button, and will instead select a redirect URL from the redirect URLs configured in the app settings.
Additionally, the listing for these apps must include at least one feature discovery card. We recommend creating a card for any major function or action performed by your app.
Before this change, the "Install" button for any app listed in the marketplace could have one of several different types of pages that users could encounter after clicking the button. These new requirements ensure a consistent and predictable install experience across all apps available on the marketplace, and make it easier for customers to find and successfully use the features of the apps they install.
The existing App Marketplace permission has been split into two separate permissions, giving HubSpot admins more granular control over whether certain users can install and/or uninstall apps:
Super admin users will continue to have full control over installing or uninstalling apps in their account.
You can now use a public API to access HubSpot's property validation rules.
Use Case:
This API allows you to understand and adhere to the validations set on properties within HubSpot. By providing access to these rules, it helps you ensure that data sent to HubSpot is consistent and accurate, reducing the likelihood of API call failures and errors.
Functionality:
The API offers two main endpoints:
GET crm/v3/property-validations/{objectTypeId}propertyName: The name of the property with validation rules.propertyValidationRules: An array containing the rules set for the property, with details like ruleType (the rule category) and ruleArguments (specific rule requirements).GET crm/v3/property-validations/0-1.Get Validation Rules for a Specific Property:
GET crm/v3/property-validations/{objectTypeId}/{propertyName}ruleType and ruleArguments for each rule.order_id" deal property, use GET crm/v3/property-validations/0-3/order_id.Learn more in the developer documentation.
We know getting started with HubSpot development can be challenging when you have to jump between multiple documentation pages. You can now access an interactive getting started guide directly in the Design Manager that walks you through HubSpot development fundamentals - from setting up local development to building with React and HubL. The guide helps you:
Functionality
You'll find the guide in two places:
A new chart has been added to the Listing Analytics tab within the App Partner Dashboard. This new chart is “Pageviews by Domain” and displays the domain name and number of times users from that domain have visited your app listing.
Anyone with a listing on the HubSpot App Marketplace has automatic access to this information in their app partner portal.
On October 8th, 2024, HubSpot launched the public beta of an automatic deactivation feature for any tokens exposed in public GitHub repositories, aimed at enhancing platform security by mitigating the risks associated with leaked tokens. The feature, which will become fully enforced on April 7th, 2025, deactivates exposed Developer API Keys, Personal Access Keys, Private App Tokens, and SMTP Tokens, notifying affected customers and technical contacts while providing a remediation guide. Developers should ensure tokens are secure and generate new ones if needed before the enforcement date to prevent service disruptions.
With the added functionality of the Subscription API, you can now use it to create and manage subscriptions within HubSpot. This update introduces the ability to:
Use Cases:
Functionality (New Create Functionality):
This update focuses on the ability to create subscriptions. Here's how it works:
Functionality (Invoicing & Payments):
You can also leverage subscriptions to automate invoicing and payment collection:
For more details, please refer to the Subscription API documentation.
Questions or comments? Please refer to our peer-to-peer developer community forum.