HubSpot Developer Changelog

March 2024 Rollup

Announced: April 1, 2024

March brings new HubL features for the HubSpot CMS, pinning engagements using the CRM API, new reporting for associations, expanded limits for CRM exports, and a new component for custom UI extensions.

Restricting the inboxId query parameter in the Beta Conversations API

Live: January 31, 2024

We'll be limiting requests to the GET /conversations/v3/conversations/threads endpoint to allow only a single inboxId query parameter.

Changes to primary labels for HubSpot-defined association labels

Announced: December 15, 2023

We're changing the labels for some of the HubSpot-defined associations between companies and other CRM objects.

Updated recommendations for storing OAuth access tokens

Announced: December 15, 2023

We're updating our recommendation for storing access tokens to allow tokens to be at least 512 characters in length.

Update to Forms API v3 and the lifecycle stage

Announced: December 12, 2023

This post serves as an update to the previous post on the lifecycle stage in forms. This post covers the details for the Forms API v3, which were missing from the previous post.

Increasing the size of contact record IDs

Announced: December 7, 2023

Beginning in March 2024, we'll be updating the system that generates contact record IDs. This will affect the id for the v3 Contacts API, the vid for the legacy Contacts API, and the hs_object_id property returned with either API.

October 2023 Rollup

Announced: October 31, 2023

October brings us webhooks for private apps, multiple updates to the HubSpot CMS, and updates for UI Extensions using React.

New permission requirements for installing public apps

Announced: October 4, 2023

What's changing? Beginning on Monday, October 16th, the App Marketplace Access permission will be required for the first install of any public app. This change will affect any HubSpot user installing any public app, when the app has not been...

Changes to the lifecycle stage in forms

Live: March 19, 2024

Note: This post has been updated to reflect the new date that the changes will go live. The changes to the legacy v2 Forms API will now go into effect on March 19, 2024. For the changes to the beta v3 Forms API, please see this separate post. We're...

Deprecation of Node v14 in all serverless functions

Announced: August 28, 2023

Node.js v14 reached end of life on April 30th 2023. To make sure HubSpot systems stay up to date on security and reliability, we will be ending support for Node.js v14 on November 27 2023. After this date, any existing functions using v14 will...

Additional details returned when generating OAuth access tokens

Live: August 18, 2025

What's changing? We're adding two additional fields to the response when generating an access token using the POST /oauth/v1/token endpoint:

Ending Support for HubSpot CLI Versions Below 6.0.0

Live: October 1, 2025

We will be officially ending support for all HubSpot CLI versions below 6.0.0. This will improve security, reliability, and compatibility with our developer platform and other developer tooling for our developer community.

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.

Deprecation of Node v18 in all serverless functions and CLI

Live: October 1, 2025

Node.js v18 will reach end of life on April 30th, 2025. To make sure HubSpot systems stay up to date on security and reliability, we will be ending support for Node.js v18 on Oct 1, 2025. After this date, any existing functions using v18 will...

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...

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...

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...

Developer References

Developer Community

App Ecosystem New

Template Marketplace

App Partner Program

Latest Posts

March 2024 Rollup

Restricting the inboxId query parameter in the Beta Conversations API

Changes to primary labels for HubSpot-defined association labels

Updated recommendations for storing OAuth access tokens

Update to Forms API v3 and the lifecycle stage

Increasing the size of contact record IDs

October 2023 Rollup

New permission requirements for installing public apps

Changes to the lifecycle stage in forms

Deprecation of Node v14 in all serverless functions

Additional details returned when generating OAuth access tokens

Ending Support for HubSpot CLI Versions Below 6.0.0

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

Deprecation of Node v18 in all serverless functions and CLI

Update for Legacy CTA Editor Sunset

Upcoming Sunset of Clearbit’s Free Logo API

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

Update: Legacy CTA Sunset

Upcoming Sunset: V1 Contact Lists API

Legacy CTA Sunset Timeline and Scope Update

Upcoming Sunset: Legacy CTAs