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HubSpot Developer Changelog

21 Posts in Contacts 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Note: This changelog has been superseded by an updated version published on October 2, 2024.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...
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Increasing the size of contact record IDs

Announced: December 7, 2023

Beginning in March 2024, we'll be updating the system that generates contact record IDs. This will affect the id for the v3 Contacts API, the vid for the legacy Contacts API, and the hs_object_id property returned with either API.
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Upcoming - Increased validation for contact updates made through APIs

Live: May 22, 2023

Beginning on May 22nd, 2023, we will be updating our APIs to use more strict validation for updates made to contact records.
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New rate limits for the legacy Contacts API batch create or update endpoint

Announced: December 6, 2021

In an effort to increase the security and performance of the HubSpot platform, we will be introducing new limits for the legacy endpoint for creating or updating a group of contact records.
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Upcoming: Customized lifecycle stages for contacts and companies

Live: September 30, 2022

On September 30th, 2022, users will be able to customize the lifecycle stages for their contacts and companies.
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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.
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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...
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Contacts API v1 - 415 Unsupported Media Type errors for requests missing the Content-Type header

Announced: June 2, 2020

What happened? Last week, we made some infrastructure upgrades to the Contacts API. While this upgrade was mostly transparent, and didn't change the functionality of the API, this did change how the Content-Type request header is handled.
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Announcement: Secondary Email API now in Developer Preview

Announced: December 4, 2019

What’s Happening
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Announcement: Enhanced field validation

Announced: November 26, 2019

EDIT: This change has started to take effect. We'll be rolling this out gradually over the next week What’s Changing? HubSpot is changing how validation works on some commonly used fields for contacts, including the first and last name. This change...
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