API HubSpot: Complete Guide to New Features and Integrations 2026
The HubSpot API ecosystem in full swing: heading towards 2026
TheAPI HubSpot is at the heart of the integration and customization strategy of the renowned CRM platform. In 2026, HubSpot has taken significant new steps, enriching its API offering to make it more powerful, simple, fast, and unified. Whether you are a developer, partner, or advanced user, understanding these developments is crucial to making the most of HubSpot. This article details major announcements, key improvements, and essential resources to master the HubSpot API.
Major new features of the HubSpot APIs in 2026: the Spring Spotlight in the spotlight
The Spring Spotlight of April 2026 was a key moment, unveiling a range of innovations for the HubSpot APIs. The clear goal is to provide a top-tier development platform.
Revolutionary new APIs
Several new APIs have been launched, opening horizons for extended integration and functionality:
Significant improvements to existing APIs
HubSpot has not only launched new APIs; substantial enhancements have been made to existing APIs to increase their capabilities and performance:
Other major updates and key features of the HubSpot API
Beyond the Spring Spotlight, the year 2026 and late 2024 have been rich in developments for the HubSpot API.
Evolution of the Marketing Events API (January 2026)
The marketing events API has been revised to address previous limitations. It now provides full access to all marketing events via the API, regardless of how they were created, thus improving event management and marketing data analysis.
New public CRM APIs: Orders and Carts objects (May 2024)
These APIs enable reading and writing data related to orders and carts in HubSpot. They open crucial possibilities for e-commerce order synchronization and abandoned cart recovery strategies.
CRM object API for Prospects (June 2024)
This API allows creating and managing prospect records directly in HubSpot and synchronizing this valuable data with other systems, streamlining the sales cycle.
Critical points for developers using the HubSpot API
With these new features come important changes that developers must imperatively consider.
Important change: API Lists V3 and identifiers (April 2026)
A major change concerns theAPI Lists V3 : list identifiers are changing from integers to strings. It is crucial to audit your code to ensure compatibility of your applications and avoid any service interruptions.
Handling sensitive data via OAuth (April 2026)
For any operation (create, read, update, delete) on sensitive data property values, applications must now request and obtain the corresponding scopes via the standard OAuth authorization flow. This enhances personal data protection.
Enhanced datetime property in marketing emails (April 2026)
HubSpot CRM-created `datetime` properties now display both date AND time when used as personalization tokens in emails sent via Marketing Hub, providing greater precision.
File properties in Smart CRM (May 2024)
It is now possible to upload and manage files directly within the CRM via a custom file property, simplifying the centralization of documents related to contacts, companies, etc.
End of life scheduled: Contact Lists API (September 30, 2026)
Please note this date: theAPI Contact Lists (legacy version) will be deprecated and will stop working on September 30, 2026. Plan your migration to the API Lists V3 if not already done.
New tools and resources to optimize your development on HubSpot
HubSpot continues to invest in tooling for its developer community:
To stay up-to-date, regularly check:
Why are these HubSpot API evolutions so important?
HubSpot's ongoing commitment to evolving its API demonstrates its desire to provide a more robust, flexible, and future-oriented platform. These updates enable companies to:
For developers, this means more possibilities, more powerful tools, and a more enjoyable and efficient platform for building solutions that deliver real added value.
Ready to harness the full power of the HubSpot API?
Recent developments in theAPI HubSpot open exciting prospects for optimizing your marketing, sales, and customer service operations. If you want to integrate HubSpot with your existing systems (ERP, specific business tools), develop custom features, or simply ensure your technological ecosystem works in perfect harmony, specialized expertise is often required.
At turnK, we make your data reliable, structured, and connected to make it safe and exploitable. We can help you fully leverage the capabilities of the HubSpot API to transform your business.
Contact us today to discuss your project and discover how we can support you!
the most common questions
The main new APIs include the Conversations API (to unify customer communication and add custom channels), the Commerce API (to create invoices and manage taxes), and new security APIs (for custom user permissions and access verification).
The Marketing Events API has been updated with generic endpoints to retrieve all marketing event data, regardless of their external source. It also allows easier association and dissociation of lists and access to all marketing events regardless of their creation mode (January 2025 update).
Since April 2025, list identifiers in the Lists V3 API have changed from integers to strings. Developers need to audit their code to ensure their applications are compatible.
These developments offer a more powerful, simple, fast, and unified platform. They enable better customization, deeper integrations, increased automation, and pave the way for innovation, both for businesses using HubSpot and for developers building on it.
