HighLevel Update

HighLevel Public API v3 Is Officially Released

By Kenneth Villar··5 min read

HighLevel has officially released v3 of its Public APIs, announced by co-founder Shaun Clark. v3 builds on the existing API versioning foundation with a more consistent endpoint architecture, better performance, and advanced capabilities for complex workflows, while your existing integrations keep running exactly as they do today.

What's new in HighLevel API v3?

  • v3 API endpoints: a new generation of endpoints designed for performance, long-term scalability, and richer data functionality.
  • Unified structure: a more predictable, standardized endpoint and payload schema that simplifies building advanced, data-heavy workflows.
  • Dedicated v3 documentation: full schemas, reference guides, and a v3-specific changelog are live.
  • Seamless version switcher: select v3 directly from the version dropdown in the developer portal to view the updated documentation.

Is v3 backward compatible?

Yes. HighLevel emphasizes zero disruption to live apps: your existing date-based API configurations remain fully functional, completely accessible, and fully documented. Nothing changes for current implementations, so your team can explore and adopt v3 on its own timeline.

How to use HighLevel API v3

  1. Open the Public API Documentation.
  2. Locate the Version Switcher dropdown at the top of the interface.
  3. Select v3 to view the new endpoints, schemas, and technical references.
  4. Build, test, and deploy.

What this means going forward

HighLevel says all new feature endpoints and non-breaking API enhancements will be added exclusively to the v3 framework as it expands core coverage. If you build or maintain GHL integrations, plan new work against v3, while existing date-based apps need no immediate change.

Frequently asked questions

Does HighLevel API v3 break existing integrations?
No. HighLevel states there is zero disruption to live apps. Existing date-based API configurations stay fully functional, accessible, and documented, so current integrations keep working and you can move to v3 on your own schedule.
How do I switch to HighLevel API v3?
Open the Public API Documentation, find the Version Switcher dropdown at the top of the interface, and select v3. That reveals the new v3 endpoints, schemas, and technical reference guides for building and testing.
Where will new HighLevel endpoints be added?
Going forward, all new feature endpoints and non-breaking API enhancements will be added exclusively to the v3 framework as HighLevel expands its core coverage. The earlier date-based versions remain supported for existing apps.
Is there documentation for API v3?
Yes. HighLevel shipped dedicated v3 documentation with full schemas, reference guides, and a v3-specific changelog, accessible by selecting v3 in the developer portal version switcher.

Sources

  1. Shaun Clark, HighLevel Official Community - Introduction to v3 for our public APIs
  2. HighLevel Public API Documentation (developer marketplace)