HubSpot Developer Changelog | Hannah Seligson (4)

Active Install requirement increase for App Certification

Announced: May 15, 2024

We are announcing an important update to the app certification requirements for app partners in the HubSpot App Marketplace. Effective May 15, 2024, the minimum number of active installs required for achieving app certification will increase from 6...

Legacy v1 Integration Timeline API Update

Live: December 2, 2024

We are making an important update to ensure our platform remains cutting-edge and to facilitate the introduction of new features. Starting December 2, 2024, the legacy v1 Integration Timeline API will no longer support mutations of Timeline Events....

New Integration of Custom Events with Custom Objects

Announced: April 4, 2024

Starting April 4th, 2024, we are introducing an update to our Custom Objects API that enables the creation and association of Custom Events with Custom Objects. This enhancement allows developers to capture unique business actions directly within...

Introducing New App Certification Submission Limits

Announced: March 29, 2024

Starting Friday, March 29, 2024, significant changes will be made to the app certification submission process for app partners. Aimed at ensuring equitable access to certification resources and improving the efficiency of the review process, we're...

Public beta: New DealSplits API

Announced: March 20, 2024

We are excited to announce the release of the new DealSplits Public API for HubSpot customers, which will be live starting May 28, 2024. This API lets customers list and create deal splits for batches of deals directly through HubSpot's CRM. The...

SSL Certificate Migration Notice

Announced: March 15, 2024

Recently, HubSpot’s CDN provider announced the deprecation of SSL certificates issued by DigiCert. To ensure continued secure service for HubSpot customers, we transitioned to an alternative SSL certificate provider for api.hubapi.com for HubSpot to...

Upcoming Sunset: v2 Owners API

Live: August 30, 2024

On August 30, 2024, we will be sunsetting the v2 of the Owners API.

Bugfix: Webhook AssociationChanges

Live: May 14, 2024

We are pleased to announce an update to our webhook subscriptions handling associationChanges that significantly improves how events for associations between the same object types are fired.

January 2024 Rollup

Announced: January 30, 2024

The January 2024 monthly rollup within the developer changelog of HubSpot includes several updates. These updates are a new Webhooks Export Log for Non-Project Based Private Apps with Higher Call Volumes, Managing Email Variables for...

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 for v3 Lists API Beta

Live: April 28, 2025

The v3 Lists API beta currently accepts both integers and strings for the ID of public folders used for list segmentation and returns the ID as an integer. We will be updating the IDs to use only strings in order to conform to the HubSpot...

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...

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: Large Export Partitioning and Association Limits for the CRM Export API

Live: April 28, 2025

On April 28th, 2025, we will be updating the CRM Exports API to bring it closer to feature parity with the in-app export tool as well as improve the overall performance of the API allowing for quicker file delivery. Exports that exceed one million...

Breaking Change for DateTime Properties in Marketing Emails

Live: April 16, 2025

Starting April 16th, 2025, any DateTime properties in your HubSpot CRM used as personalization tokens in Marketing Emails will now include both the date and time stored in the property rather than just the date.

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

Live: April 29, 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...

Public Beta: Automatic Deactivation of Exposed Tokens

Live: April 7, 2025

To enhance the security of our platform and protect our customers, we are introducing an automatic token deactivation public beta feature on October 8th, 2024, for any HubSpot tokens publicly exposed in GitHub repositories. This update is designed...

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: May 30, 2025

What’s changing? The V1 Contact Lists API will sunset on May 30th, 2025. After this date, calls made to the v1 endpoints will no longer function. We're sunsetting the V1 Contact Lists API to focus our development efforts on the improved V3 Lists...

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

Active Install requirement increase for App Certification

Legacy v1 Integration Timeline API Update

New Integration of Custom Events with Custom Objects

Introducing New App Certification Submission Limits

Public beta: New DealSplits API

SSL Certificate Migration Notice

Upcoming Sunset: v2 Owners API

Bugfix: Webhook AssociationChanges

January 2024 Rollup

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 for v3 Lists API Beta

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

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

Breaking Change: Large Export Partitioning and Association Limits for the CRM Export API

Breaking Change for DateTime Properties in Marketing Emails

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

Public Beta: Automatic Deactivation of Exposed Tokens

Update: Legacy CTA Sunset

Upcoming Sunset: V1 Contact Lists API

Legacy CTA Sunset Timeline and Scope Update

Upcoming Sunset: Legacy CTAs