HubSpot Developer Changelog

Introducing the HubSpot Developer Platform

We've been working on a lot of big changes for developers, and couldn't be more excited to share them with you. We typically start changelog posts with a summary of everything, but this time it's too much to summarize, forgive us but "we did a thing" is going to have to do.

Here's the most succinct list of the changes we could put together:

    • We added a Developer Role and seat - ensuring developers get the permissions they need.
    • Developer Projects are even more powerful and serve as the basis for everything you build on HubSpot.
    • Developer Projects are the basis for unified apps - one way to build apps regardless of if it's just for one HubSpot account or many.

      New developer project components you can build

      • Custom Workflow Actions - Now built right into your project.
      • Agent Tools - built on the Custom Actions framework powering workflow actions, you can enable Breeze Agents to interact with your app.
      • App Objects - Custom Objects that your app owns and can connect to HubSpot's other CRM objects.
      • App Events - the next evolution of HubSpot's timeline events.
      • Webhooks using the new Webhooks Journal

      UI Extensions are even more powerful

      • Your app's settings screen is now powered by UI Extensions enabling you to provide thoughtful UI's and controls to admins connecting your app to their account.
      • Your UI extension is no longer confined to individual record pages, your app can have it's own dedicated App Home page that you can use to display dashboards, and other interfaces that need more screen real-estate

New ways to interact with HubSpot and the developer documentation.

    • Ask the docs questions powered by AI.
    • Ask Breeze Copilot questions about building on HubSpot.
    • Our docs are AI optimized.
    • New organization of the developer documentation
    • New design.
    • Use ChatGpt, Claude, Gemini, and our remote MCP server to directly interact with HubSpot.

Updated the developer experience for Developer Projects and Apps.

  • Log tracing improvements
  • Local development UI overview
  • Sandbox UI improvements
  • CI/CD Pipeline improvements
  • Build and deploy logs
  • Domain Verification
  • Telemetry integration supporting Sentry and Honeycomb
  • New tool testing agent to help you improve your agent tools.

Updated CLI

  • New hs get-started command.
  • New app migration commands to help you get your app ready.
  • Your Agentic IDEs can now do more, smarter, and more efficiently with the new CLI based Developer MCP server - Now in Public Beta.

As we said, it was a bit too much for a simple summary, clearly… "we did a thing" and we hope you're as excited as we are. There has never been a better time to be a HubSpot Developer. For a deeper understanding of the changes check out our developer blog post.