HubSpot Developer Changelog

Announcement: Enhanced field validation

Announced: November 26, 2019

EDIT: This change has started to take effect. We'll be rolling this out gradually over the next week What’s Changing? HubSpot is changing how validation works on some commonly used fields for contacts, including the first and last name. This change...

Announcement: Deals now support merging

Announced: November 25, 2019

What’s happening Deals are central to a CRM. Businesses need to be sure of what the state of their pipeline and closed business is. Deals hold information about completed sales and potential future ones. Because mistakes happen, we are releasing the...

Announcement: New API focused academy modules for Developers

Announced: November 20, 2019

You spoke and we listened. We’re excited to announce a new academy course for working with HubSpot’s APIs. If you’re new to APIs or more specifically new to HubSpot’s APIs this will help you get started.

Announced: Form element ID attribute is being changed to be more unique

Announced: November 18, 2019

HubSpot forms render a element with a unique id attribute for each page on which the form is used. However, when multiple instances of the same form are added to the same page, the id for each form may not be unique. To resolve this, the id...

October 9th Round up: API Best Practice and JS Minifier updates

Announced: October 9, 2019

This update features information about a new JS minifier and about API Key rotation best practices and tools to help you remember to rotate those key. New javascript minifier for CMS pages We’re upgrading our javascript minification to use terser....

New feature: New List Operations

Announced: September 18, 2019

What's happening? We've released a set of new functions for manipulating lists in HubL. These functions enable you to work with lists more easily.

CDN path for static assets (CSS & JavaScript) changing

Live: February 12, 2025

We're updating the paths for design manager assets, including CSS and JS files. The paths will change from hs-fs/hub/* to hs-fs/hubfs/*.

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...

Bug Fix: Batch Read Limit for HubSpot Associations API

Live: February 10, 2025

HubSpot is introducing a new limit on the number of IDs that can be supplied to the Batch Read endpoint for (/{fromObjectType}/{toObjectType}/batch/read) both the v3 and v4 public Associations API.

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

Live: April 7, 2025

Starting April 7th, 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 and...

Update: Legacy CTA Sunset

Live: March 31, 2025

Based on community feedback, we have updated our approach to transitioning from Legacy CTAs to the new CTA editor in HubSpot. In Q1 2025, new CTAs cannot be created by the Legacy CTA editor. Below are more details explaining the plan and changes to...

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...