HubSpot Developer Changelog

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.

Bugfix: Update for Webhook Association Events Containing Internal CRM Objects

Announced: April 23, 2025

We've updated our Webhooks execution flow to enhance security by ensuring that association events containing non-public CRM objects are no longer sent to external integrators. This change shouldn’t require immediate action from customers, but it may...

New Global Configuration

Announced: April 15, 2025

We are introducing a new global configuration system to streamline account management for developers using the HubSpot CLI v7.4.0. This change addresses issues related to using multiple account configuration files, often leading to conflicts and...

Custom Channels API Is Now Live

Announced: April 10, 2025

We are excited to announce important updates to the Custom Channels API to enhance flexibility, functionality, and integration capabilities now that it's live. The updates prioritize improvements in webhook functionality, message threading, channel...

March 2025 Rollup

Announced: March 31, 2025

HubSpot's March 2025 update introduces significant developer updates. Providers can now create marketplace listings in any language to enhance global reach, and Custom Workflow Actions now support 14 languages. The Calling Extensions SDK includes...

New Size Limits for App Events and App Event Properties

Announced: March 18, 2025

We have revised the size restrictions for App Events, also referred to as Timeline Events or Integration Events, to ensure seamless integration within the UnifiedEvents ecosystem.

Breaking Change: HubL Function Limits for Marketing Emails

Live: May 28, 2025

Beginning on May 28, 2025, we are enforcing the CMS HubL function limits for all customers using the following functions in their Marketing Emails, per our Software Products, Packaging, and Limits policies.

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:

Deprecating Support for Classic/Legacy CRM Cards

Live: June 16, 2025

Starting June 16th, 2025, Classic CRM cards will no longer be supported due to the upcoming sunset of Classic CRM Cards, which will occur on October 31st, 2026. The CRM card feature has been a cornerstone of our CRM system for over a decade. As part...

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

New HubSpot Flows Workspace on Postman

Bugfix: Update for Webhook Association Events Containing Internal CRM Objects

New Global Configuration

Custom Channels API Is Now Live

March 2025 Rollup

New Size Limits for App Events and App Event Properties

Breaking Change: HubL Function Limits for Marketing Emails

Additional details returned when generating OAuth access tokens

Deprecating Support for Classic/Legacy CRM Cards

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