HubSpot Developer Changelog

Reminder: Upcoming Validation Change to the Forms API Submission Endpoints on March 21st, 2022

Live: March 21, 2022

This is a reminder for our developer community that from March 21st, 2022 we will be rejecting any form submissions that submit fields that aren’t present on a form. Plus any submissions that are missing fields that are required on a form. Any forms...

Upcoming Validation Change to the Forms API Submission Endpoints

Live: March 21, 2022

Update: We recently released an amendment to this validation, please see this amendment here: Amendment to Forms API Submission Validation. From March 21st 2022 we will be rejecting any form submissions that submit fields that aren’t present on the...

Sunsetting the ‘archived’ query parameter for the v3 CRM Pipeline API and introducing two new audit endpoints into public beta

Live: March 14, 2022

We will be sunsetting the ‘archived’ query parameter for the v3 CRM Pipeline API and also introducing two new endpoints into public beta for auditing changes to CRM pipelines and pipeline stages.

Announcing the addition of a new fieldLevelPermission field to the v1 CRM Properties APIs

Announced: November 3, 2021

We are introducing a new field called fieldLevelPermission to the v1 CRM Properties API.

Change to behaviour between GET and POST Contacts V1 endpoints

Announced: October 29, 2021

We are making a change to the current inconsistent behaviour between the GET and POST Contacts V1 endpoints.

New property limits for the Custom Behavioural Events API

Live: September 20, 2021

We are introducing new property and value limits for the Custom Behavioural Events API which is currently in beta.

Public beta: Introducing new GDPR deletion endpoints for the CRM Contact Object API

Live: August 27, 2021

Update: This post has been updated to more accurately reflect the current GDPR functionality as of September 2022. See our GDPR resources for integrations for full details. Good news! We've enhanced the HubSpot platform to enable easier compliance...

Deprecating the “skipValidation” optional parameter for the v3 form submission endpoints

Live: August 26, 2021

The “skipValidation” optional parameter for the v3 form submission endpoint will be deprecated today, August 26th 2021.

Reminder: New Rate Limits for the Existing Form Submission Endpoints will be introduced on July 13th 2021

Live: July 13, 2021

New Rate Limits for the Existing Form Submission Endpoints will be introduced on July 13th 2021.

Announcing the removal of the imports field from the v1 Deals API

Live: September 27, 2021

Sunset: the "imports" field will no longer be provided by the v1 Deals API.

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

Reminder: Upcoming Validation Change to the Forms API Submission Endpoints on March 21st, 2022

Upcoming Validation Change to the Forms API Submission Endpoints

Sunsetting the ‘archived’ query parameter for the v3 CRM Pipeline API and introducing two new audit endpoints into public beta

Announcing the addition of a new fieldLevelPermission field to the v1 CRM Properties APIs

Change to behaviour between GET and POST Contacts V1 endpoints

New property limits for the Custom Behavioural Events API

Public beta: Introducing new GDPR deletion endpoints for the CRM Contact Object API

Deprecating the “skipValidation” optional parameter for the v3 form submission endpoints

Reminder: New Rate Limits for the Existing Form Submission Endpoints will be introduced on July 13th 2021

Announcing the removal of the imports field from the v1 Deals API

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