HubSpot Developer Changelog (38)

Complete: Engagements API Maintenance

Announced: August 29, 2019

Update: maintenance is complete! The Engagements API will be undergoing maintenance between 5:00 PM and 6:00 PM Eastern Time Sunday, September 15. During this maintenance period, there will be a brief period where the Engagements API will be...

August 28th Roundup: A developer tools redesign and APIs exiting developer preview

Announced: August 28, 2019

For this week’s round up we rolled 3 updates together with an improved experience in the developer tools and 2 APIs moving from developer preview to general availability.

August 22nd Roundup: 3 New Updates

Announced: August 22, 2019

Now Live: Webhooks now support privacy-compliant contact deletions.

Announced: August 14, 2019

Data privacy is a top priority at HubSpot, and helping our developer community stay on top of data compliance is important to us. HubSpot users have the ability to permanently delete a contact record to comply with privacy laws. You can see more...

August 7th Roundup: 5 New Updates

Announced: August 7, 2019

For this post we rolled 5 updates into one with a new header to help with Webhook validation, a new callback for embedded forms, added flexibility for content developers, a number of documentation updates, and a small update to the Developer’s Terms...

Announcing new limits for Developer Accounts and Applications

Announced: August 6, 2019

What’s happening?

Complete: Timeline API Maintenance

Announced: August 5, 2019

Update: Maintenance is complete! The Timeline API will be undergoing maintenance between 5:00 PM and 6:00 PM Eastern Time Sunday, August 11. During this maintenance period, there will be a brief period where the Timeline API will be unavailable, and...

Changes to the public API demo account

Announced: July 11, 2019

Update: These changes are now live, and the demo API key will only be allowed to make GET requests. When HubSpot launched our first public APIs in 2010, we created our public API demo account so that developers would have an account that could be...

Now Live: Developer Accounts Updates - New home screen and added security

Announced: June 25, 2019

Today we are announcing three new updates to Developer Accounts. A new home screen for Developer Accounts, masking the client secret, and adding an option to specify a redirect URL for your applications.

Sunset: FTP Folders and Workflow Log Events

Announced: June 19, 2019

We’re experimenting with batching sunset updates every other week. We hope this will improve your experience as a developer community. Please let us know what you think using the community links below.

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...

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Latest Posts

Complete: Engagements API Maintenance

August 28th Roundup: A developer tools redesign and APIs exiting developer preview

August 22nd Roundup: 3 New Updates

Now Live: Webhooks now support privacy-compliant contact deletions.

August 7th Roundup: 5 New Updates

Announcing new limits for Developer Accounts and Applications

Complete: Timeline API Maintenance

Changes to the public API demo account

Now Live: Developer Accounts Updates - New home screen and added security

Sunset: FTP Folders and Workflow Log Events

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