November 2025 API Rollup on Postman

[hseligson]

As we close out 2025, HubSpot is delivering a wide-ranging set of platform and API improvements designed to strengthen data consistency, improve developer tooling, expand CRM object capabilities, and increase visibility into system behavior. This month’s rollup highlights several major enhancements—from expanded API surfaces and higher scalability limits to richer documentation and more powerful event instrumentation. Developers will find new ways to validate and govern data, streamline build workflows, model complex relationships, and integrate more deeply with CRM objects through recently launched APIs. Together, these updates continue our ongoing investment in a more flexible, transparent, and developer-friendly HubSpot ecosystem.

Sunsetting Contact Lists API

The v1 Contacts List API is slated for sunset on April 30th, 2026. Please refer to this announcement for more details on the sunset and migration options.

Create Property Validations via Public API

You can now create, update, and retrieve property validation rules through the public CRM API. This allows developers to enforce data consistency and integrity programmatically—for example, requiring specific formats, minimum lengths, or character types for property values. Use the new endpoint crm/v3/property-validations/{objectTypeId}/{propertyName}/rule-type/{ruleType} to define or fetch validation configurations. Learn more in the Property Validations API documentation.

HubSpot CLI 7.10.0 Now Supports Dependency Updates, Beta Platform Versions & Enhanced MCP Tooling

HubSpot CLI 7.10.0 delivers a substantial upgrade to the developer experience with the introduction of hs project update-deps, a new command that streamlines updating npm dependencies across project components. This provides a clearer, safer workflow for keeping project libraries current without reinstalling from scratch. The release also adds support for beta platform versions, enabling developers to experiment with upcoming HubSpot platform capabilities before they reach general availability.

This version includes notable improvements to MCP tooling, including codex integration for setup, message and profile support for MCP project uploads, and enriched debugging output that now surfaces network request context to make troubleshooting smoother. File handling has also been refined—particularly around markdown file collisions—to ensure documentation remains intact during renames.

On top of these enhancements, developers will find numerous quality-of-life and reliability fixes, from resolving require.resolve() issues in CMS theme previews to improving dependency-related error messages, flag handling, and package-installation utilities. These updates maintain complete backward compatibility while meaningfully modernizing core workflows.

Watch the new test account creation walkthrough video and check out the full set of changes on GitHub.

Association Limits Increased to 250,000 per Object Type

HubSpot has raised association limits for all paid accounts, allowing individual records to be linked with up to 250,000 records of a given object type (for example, 250,000 contacts with a single company). This fivefold increase expands your ability to model large and complex data relationships directly in HubSpot, including via API and imports. Some object-specific limits still apply—for instance, 10,000 associated deals per contact and 1,000 associated records per engagement. Learn more in the Associations API documentation and review the HubSpot Product & Services Catalog for full details on technical limits.

Projects API

The Projects API is now available in support of HubSpot's new recently launched project object. With thi...See the documentation for more details.

Documentation Enhancements: Required Scopes, Data Definitions, and Searchable Changelog Entries

There are several documentation improvements to streamline how you discover and use information in HubSpot's developer documentation:

Required Scopes in API Reference Docs: A new, dedicated component now lists the application scopes needed for each API endpoint. This helps you quickly confirm permissions and avoid authentication issues when building or updating integrations.

[In beta] Object definition pages for key CRM objects: Selected APIs now include "Object definition" pages to make it easier to understand object structure, find available default properties, and troubleshoot data sync issues. Highlights include:

• Object attributes: object IDs and fully qualified names, required and searchable properties, and feature support listings.
• Default properties: searchable lists of default properties per object, which includes the property name and label, data type information, definition, and expandable JSON code for full reference.

Object definition pages will be rolled out over the next month, starting with the contact, company, deal, and ticket objects.

Changelog Entries Shown in Docs Assistant: You can now see recent developer changelog entries directly in documentation assistant results. This means you'll instantly spot any updates affecting the endpoint you're exploring, helping you adapt to changes faster and with greater confidence.

Collectively, these enhancements are designed to reduce friction—helping you identify needed scopes, understand object models, and monitor relevant updates with less guesswork.

Third-Party Call Events: Call Started and Call Ended

HubSpot now enables publishing Call Started and Call Ended events for third-party calls. These events are not only logged but can also be leveraged in Journey Analytics and Workflows, making call data actionable across the platform.

To ensure these events are published correctly, integrators need to send the following SDK events: incomingCall, callEnded, and finalizeEngagement. For full implementation details, refer to the API documentation.

Please be sure to leave a comment or watch our HubSpot Public API Workspace for updates like these or subscribe to the HubSpot Developer Changelog!