HubSpot Developer Changelog

New Campaign API Updates

Live: July 9, 2025

We’re rolling out several significant enhancements to the Campaigns API today on July 9th, 2025, to bring it closer to feature parity with the HubSpot platform, providing greater flexibility and control for developers. These updates include expanded...

Changes to Serverless Function Error Responses

Announced: July 3, 2025

We are updating the error responses for Serverless Functions to provide more accurate status codes when issues originate from your Serverless Function code. Previously, some Serverless Functions that contained errors in their code were incorrectly...

June 2025 Rollup

Announced: June 30, 2025

And just like that, the first half of 2025 is officially over. This month's updates include an update to the Commerce Hub Payments API for full CRUD operations for payments endpoints, a new unified app card configuration tab within the Connected...

Campaigns API Update: Scope Enhancement & Property Deprecation

Live: July 9, 2025

On July 9th, 2025, we will introduce two updates to the Campaigns Public API. These updates include all modification endpoints for the Campaigns API—including create, update, delete, and asset management, and any new API endpoints introduced in the...

CMS Dev Server: Security update for version 1.0.33 and ending support for previous versions 1.0.32

Announced: June 23, 2025

We have released a security update to our cms-dev-server - version 1.0.33. Due to this update, we will also be sunsetting older versions of the cms-dev-server from 1.0.32 and below starting today (June 23rd, 2025). To see a full list of versions...

Public Beta: New API for uninstalling a public app from a HubSpot account

Announced: June 23, 2025

Today we're releasing a new API endpoint that allows app builders to uninstall their public app from a HubSpot account: DELETE /appinstalls/v3/external-install

Introducing the HubSpot deep research connector

Live: June 4, 2025

HubSpot is the first CRM to launch a deep research connector with ChatGPT. The new HubSpot deep research connector lets you apply powerful, in-depth research capabilities to your own customer data in HubSpot without the support of an analyst or data...

New HubSpot Flows Workspace on Postman

Live: June 3, 2025

Today, the HubSpot Developer Relations team is introducing a new public Postman workspace. This workspace offers visual, ready-to-run API workflows designed to simplify and accelerate HubSpot development with Postman Flows.

May 2025 Rollup

Announced: May 29, 2025

This month's updates include the deprecation of old data management modules in favor of the new Data Privacy Request page, the ability to create order records directly within HubSpot, and new validation and auto-formatting features for phone number...

Updates to Next Activity and Last Activity Property Groups

Announced: May 27, 2025

edit 5/28/25 -- We have paused this change and will resubmit a notice at a later date From May 27 to May 30, we will be rolling out an update to the Next Activity and Last Activity groups of properties to provide a more accurate reflection of sales...

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

New Campaign API Updates

Changes to Serverless Function Error Responses

June 2025 Rollup

Campaigns API Update: Scope Enhancement & Property Deprecation

CMS Dev Server: Security update for version 1.0.33 and ending support for previous versions 1.0.32

Public Beta: New API for uninstalling a public app from a HubSpot account

Introducing the HubSpot deep research connector

New HubSpot Flows Workspace on Postman

May 2025 Rollup

Updates to Next Activity and Last Activity Property Groups

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