HubSpot Developer Changelog

September 2023 Rollup

Announced: October 3, 2023

At Inbound 2023 we announced a lot of changes across the HubSpot product. For an overview of our roadmap and to see what was announced see Hubspot.com/new. While we announced a lot at INBOUND there's more updates this September from hiding default...

HubSpot CLI v5

Live: August 16, 2023

Today we're releasing the latest version of the HubSpot CLI, this update does require Node v16 at a minimum. If you are still running an older version of Node you will need to update, or pin your CLI version. What's changing?

New member_email field for contacts used for CMS Membership emails

Live: May 8, 2023

We've added a new member_email property to contacts which dictates where membership emails (password reset, password confirmation, and registration) are sent. The following users should be aware of this new property:

April 2023 Rollup

Live: May 1, 2023

April showers bring new HubSpot powers. Better validation for multi-currency accounts, GraphQL available in more Hubs, new phone property type, improved and consolidated UIs, session timeout control for private content, and import tool improvements.

Bug fix: Contact Properties updated to indicate they do not force uniqueness

Live: April 12, 2023

We discovered that it was possible using the API to include hasUniqueValue=true in a Contact property's definition. Currently HubSpot doesn't support unique properties in Contacts. So despite the value showing as true, it was ignored and not...

Deprecating previousCategories in the Cookie Banner API

Live: April 3, 2023

We've discovered that in some situations the previousCategories field within the cookie banner's consent object has incorrect values. The Cookie Banner API provides consent listeners so that developers can properly handle cookies based on the user's...

Changes to Actors and Delivery Identifiers in the Conversations API

Live: April 10, 2023

The Conversations API (currently in beta) is used to read and send HubSpot conversations inbox messages. We're making 2 changes to the message recipient portion of the API response, and one of the changes may require you to make changes if your...

Deprecation of Node v12 in all serverless functions

Live: March 24, 2023

HubSpot has 3 areas where developers can build serverless functions. CMS Hub Serverless Functions, Workflow Custom Coded Actions, and Developer Projects, which is part of the CRM Development Tools beta. Node.js v12 reached it's end of life Apr 30,...

New versions of default CMS Site Search Input and Search Results modules

Live: January 10, 2023

CMS Hub has default modules that can be used when building pages and templates in the CMS. New accounts created after January 10th will have an updated version of two of these modules, Search Input, and Search Results. Existing accounts created...

GraphQL for CMS Developers is live for CMS Hub Pro and Enterprise

Live: November 18, 2022

Developers building on CMS Hub Pro or Enterprise can take advantage of GraphQL to query for, and display, their HubSpot CRM object and HubDB data on CMS pages or emails using HubL. GraphQL can also be used to power external content or integrations...

Marketing Email API: v3 released to general availability and upcoming sunset for v1

Live: October 1, 2025

Today we're announcing changes for the two versions of the Marketing Emails API.

Update for Legacy CTA Editor Sunset

Live: November 30, 2025

We have an essential update on the scope and timeline of a previously announced Legacy CTA sunset. Starting September 1st, 2025, all new CTAs must be created using the new CTA editor. Existing Legacy CTAs that have already been created will continue...

Upcoming Sunset of Clearbit’s Free Logo API

Live: December 1, 2025

In December 2023, Clearbit was acquired by HubSpot, marking the beginning of an exciting new chapter for both companies. Since then, the Clearbit team has fully integrated into HubSpot, combining our expertise with HubSpot’s resources to better...

Upcoming Sunset: HubSpot Academy CMS for Developers Certification

Live: May 30, 2025

What’s changing Starting on May 30, 2025, the HubSpot CMS for Developers Certification will no longer be available. The content of this course has been updated over the years but has hit a point that significant revisions are needed to to keep up...

Breaking Change: HubL Function Limits for Marketing Emails

Live: May 28, 2025

Beginning on May 28, 2025, we are enforcing the CMS HubL function limits for all customers using the following functions in their Marketing Emails, per our Software Products, Packaging, and Limits policies.

Breaking Change: Enhanced Validations for Non-String Properties in HubSpot's CRMObject APIs

Live: November 10, 2025

Starting November 10th, 2025, HubSpot will implement enhanced validations for non-string property values, including enumeration and multi-value enumeration property values submitted via the CRMObject APIs. This change aims to improve data integrity...

Upcoming Sunset: Growth default theme for the HubSpot CMS

Live: May 14, 2025

Note: This post has been updated to reflect an updated sunset date of March 28. The original date for this was March 15. What’s changing Starting on May 14, 2025, the default CMS Growth theme will no longer be available for new HubSpot portals....

Reminder: Breaking Change for Enhanced Validations for Non-String Properties in HubSpot's CRMObject APIs

Live: November 10, 2025

Starting November 10, 2025, HubSpot will introduce enhanced validation rules for non-string property values, including enumeration and multi-value enumeration submitted via the CRMObject APIs. This change aims to improve data integrity and user...

Breaking Change: Removed Support for Referencing Custom Object Types by Base Name

Live: June 4, 2025

We are removing the undocumented support for requesting custom object types by their base name (GET/crm/v3/objects/{baseName}) in HubSpot public APIs. All custom object types must be referenced by their unique identifier (object type ID, fully...

Update: Legacy CTA Sunset

Live: November 30, 2025

Attention: We've recently revised our timeline on March 25th, 2025. For the most current details regarding this change, please check the latest updates in our changelog. Based on community feedback, we have updated our approach to transitioning from...

Upcoming Sunset: V1 Contact Lists API

Live: September 30, 2025

Edit: we have extended the sunset date from May 30, 2025 to September 30, 2025 to allow more time for migrations. The below has been updated to reflect this change. What’s changing? The V1 Contact Lists API will sunset on September 30, 2025. After...

Legacy CTA Sunset Timeline and Scope Update

Live: November 30, 2025

Attention: We've recently revised our timeline on March 25th, 2025. For the most current details regarding this change, please check the latest updates in our changelog.

Upcoming Sunset: Legacy CTAs

Live: November 30, 2025

Attention: We've recently revised our timeline on March 25th, 2025. For the most current details regarding this change, please check the latest updates in our changelog. We are sunsetting the Legacy CTAs (Call-To-Action) app and migrating it into a...

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Latest Posts

September 2023 Rollup

HubSpot CLI v5

New member_email field for contacts used for CMS Membership emails

April 2023 Rollup

Bug fix: Contact Properties updated to indicate they do not force uniqueness

Deprecating previousCategories in the Cookie Banner API

Changes to Actors and Delivery Identifiers in the Conversations API

Deprecation of Node v12 in all serverless functions

New versions of default CMS Site Search Input and Search Results modules

GraphQL for CMS Developers is live for CMS Hub Pro and Enterprise

Marketing Email API: v3 released to general availability and upcoming sunset for v1

Update for Legacy CTA Editor Sunset

Upcoming Sunset of Clearbit’s Free Logo API

Upcoming Sunset: HubSpot Academy CMS for Developers Certification

Breaking Change: HubL Function Limits for Marketing Emails

Breaking Change: Enhanced Validations for Non-String Properties in HubSpot's CRMObject APIs

Upcoming Sunset: Growth default theme for the HubSpot CMS

Reminder: Breaking Change for Enhanced Validations for Non-String Properties in HubSpot's CRMObject APIs

Breaking Change: Removed Support for Referencing Custom Object Types by Base Name

Update: Legacy CTA Sunset

Upcoming Sunset: V1 Contact Lists API

Legacy CTA Sunset Timeline and Scope Update

Upcoming Sunset: Legacy CTAs