HubSpot Developer Changelog

[Heads Up] Associations Improvement Rolling Out to All New Customers

Announced: February 1, 2022

What is it? In September 2021 we announced some exciting updates to associations in HubSpot. With these improvements, you can now associate multiple companies to a contact, deal, or ticket record. Additionally, Professional and Enterprise customers...

New v3 Engagement APIs in beta and Contacts GDPR delete endpoint moves to General Availability

Announced: January 12, 2022

HubSpot API consistency and completeness has been a major point in feedback from our developer community for some time now. You spoke, and we listened! We are excited to announce the launch of a refreshed Engagements API available today in developer...

Introducing version 3 of Webhook signatures

Announced: October 25, 2021

In order to help protect our partners and customers, HubSpot signs outgoing requests (such as those for webhooks or CRM cards) so that you can verify that the request did actually come from HubSpot. Following the latest security best-practices, we...

List Filters Are Changing Formats But Will Be Backwards Compatible

Live: July 26, 2021

What’s Happening

Let us know what you think about our beta APIs

Announced: April 2, 2021

As HubSpot CEO, Brian Halligan, is fond of saying “Feedback is the breakfast of champions” so it’s important for us to hear exactly what you think about about our APIs, especially while they are in beta.

Burst limits are increasing for API key authenticated calls

Announced: March 1, 2021

We have rate limits in place to help make sure we offer reliable services to all our customers. Without them, customers could accidentally or maliciously slow down or take down HubSpot services. As we make improvements to our infrastructure we want...

CRM property change source will show user ID instead of owner email

Live: April 26, 2021

CRM properties tell you the current state of a given object, like a contact, what their first name is, what their address is and so on. One thing they can also tell you is what those values used to be. Maybe they moved so you changed their address....

Timeline API IDs must be globally unique

Live: April 21, 2021

The Timeline API allows you to embed information from other applications directly into the HubSpot Timeline. It also enables marketers to create lists based on contacts that interacted with those Timeline Events.

Rate limit headers will now appear for OAuth authenticated calls

Announced: January 13, 2021

What’s happening

Digest: Calendar task limits and date format addition in CRM Imports

Live: November 16, 2020

This changelog digest has two updates, limiting how many calendar tasks can be created and adding a new format for dates when importing crm records.

Sunset of JWT SSO Setup for Private Content

Live: January 29, 2025

What's Changing? On January 29th, 2025 we are deprecating the ability to set up Single Sign-On (SSO) for JWT-based applications. Moving forward, we will be replacing this functionality with the OpenID Connect (OIDC) standard1. If you are already...

Breaking Change: Upcoming Change to Scope Requirements for App Cards in Private Apps

Live: December 1, 2024

As part of our ongoing efforts to enhance security within the HubSpot ecosystem, we will update the scope requirements for app cards in private apps on December 1st, 2024.

Breaking Change: Removed Support for Referencing Custom Object Types by Base Name

Live: April 29, 2025

We are removing the undocumented support for requesting custom object types by their base name (GET/crm/v3/objects/{baseName}) in HubSpot public APIs. All custom object types must be referenced by their unique identifier (object type ID, fully...

Public Beta: Automatic Deactivation of Exposed Tokens

Live: April 7, 2025

To enhance the security of our platform and protect our customers, we are introducing an automatic token deactivation public beta feature on October 8th, 2024, for any HubSpot tokens publicly exposed in GitHub repositories. This update is designed...

Updated Merge Functionality for CRM Objects (including Contacts and Companies)

Live: January 14, 2025

Note: This changelog supersedes a prior version published on July 22, 2024. Due to customer feedback and confusion regarding the scope of changes, we have updated and clarified the details in this new changelog. Please review the updated information...

Bug Fix: Batch Read Limit for HubSpot Associations API

Live: January 6, 2025

HubSpot is introducing a new limit on the number of IDs that can be supplied to the Batch Read endpoint for (/{fromObjectType}/{toObjectType}/batch/read) both the v3 and v4 public Associations API.

Updated merge functionality for contacts and companies

Live: January 14, 2025

Note: This changelog has been superseded by an updated version published on October 2, 2024. Please refer to the new changelog for the most accurate and up-to-date information regarding merge functionality for contacts, companies, and other CRM...

Breaking Change: Enhanced Validations for Non-String Properties in HubSpot's CRMObject APIs

Live: January 6, 2025

Starting January 6, 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 and...

Update: Legacy CTA Sunset

Live: March 31, 2025

Based on community feedback, we have updated our approach to transitioning from Legacy CTAs to the new CTA editor in HubSpot. In Q1 2025, new CTAs cannot be created by the Legacy CTA editor. Below are more details explaining the plan and changes to...

Upcoming Sunset: V1 Contact Lists API

Live: May 30, 2025

What’s changing? The V1 Contact Lists API will sunset on May 30th, 2025. After this date, calls made to the v1 endpoints will no longer function. We're sunsetting the V1 Contact Lists API to focus our development efforts on the improved V3 Lists...

Legacy v1 Integration Timeline API Update

Live: December 2, 2024

We are making an important update to ensure our platform remains cutting-edge and to facilitate the introduction of new features. Starting December 2, 2024, the legacy v1 Integration Timeline API will no longer support mutations of Timeline Events....

Legacy CTA Sunset Timeline and Scope Update

Live: December 31, 2024

Previous Sunset Start: April 30, 2024