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What's New

Enhanced Developer Tools & Resources

Ship faster on HubSpot. Modern API infrastructure, versioned documentation, and AI tools to connect HubSpot with wherever customers work.

Whether you're building an integration for the Marketplace or customizing the CRM, these tools will enable you to build more reliably and with greater technical precision. From our purpose-built SDKs to our versioned APIs, we're standardizing a more predictable and high-quality experience for the way you build on the HubSpot Developer Platform.

Screenshots of the versioned developer documentation

LIVE

Versioning for APIs & Docs

Date-based Versioned APIs

The first date-based API version, 2026-03, is now available. Breaking changes for supported APIs happen twice a year (March and September), each version is supported for 18 months, and immutable API versions mean your integrations won't break unexpectedly within a support window, so you can migrate to newer versions on your own timeline.

Versioned Developer Documentation

As part of our commitment to quality and platform stability, we’re introducing versioned docs for both our APIs and Developer Platform and will use a YYYY-MM format to clearly indicate the year and month they went live.

Learn more
A screenshot of account service keys

BETA

Secure, Self-Service Integrations with Service Keys

Need to connect your HubSpot account to third-party tools? Now, admins you can create Service Keys directly in HubSpot without a developer. Service Keys provide a simplified authentication solution for customers who need API access without the complexity of full app development. This feature replaces "legacy private apps" by rebuilding them on the modern Developer Platform infrastructure.

Service Keys provide a simplified, secure way to connect HubSpot to external tools, allowing you to:

  • Connect to third-party tools like Tableau, Power BI, and data warehouses in minutes
  • Maintain secure, scoped access to only the data your integrations need
  • Keep integrations running smoothly with keys that don't expire when employees leave
  • Stay in control with built-in activity logging and easy key rotation
Learn more
Screenshots of CRM definition docs.

BETA

Searchable CRM Object Definition Docs

Now in beta for Contacts, Companies, Deals, and Tickets, the developer docs include a corresponding “Object Definition” page so you can easily find and define object properties. Check out an example for the Contacts Object here.

Get a list of primary and secondary display properties for each object, search for object properties quickly to see their data type and name, and filter through properties to find the specific one you need.

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AI-Assisted Development

Build HubSpot apps faster with AI coding tools like Cursor, Claude Code, and Codex. Connect HubSpot data to third-party AI tools your customers love. 

remote mcp auth apps - spring spotlight 2026

HubSpot MCP Server (remote)

Unlock HubSpot data with a secure connection through the HubSpot MCP Server. With the hosted endpoint (mcp.hubspot.com), you can connect any compatible MCP client to create custom workflows and integrations with read and write access to CRM objects. Manage these connections via MCP Auth Apps (Beta) in the Developer Platform.

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local mcp - spring spotlight 2026

Developer MCP Server (local)

The Developer MCP Server gives you the power to create HubSpot apps using natural language. Download it through your CLI and start chatting with it in your preferred AI-powered code editor, like Claude Code, Cursor, and Codex.

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From the Changelog

Can't Miss Updates to the Developer Platform

We’re doubling down on creating a reliable and extendable HubSpot Developer Platform. We’ve streamlined our platform with serverless functions for built-in backend logic and date-based versioned APIs to help your team plan upgrades with confidence and less headaches. Explore every update in our full Spotlight Developer Changelog.

  • HubSpot Projects v2026.03

    The latest version of our unified framework for apps and is now live, including serverless functions compatible with UI extensions, and app migration support from Projects 2025.1 and 2023.2 to 2026.03.

  • Serverless Functions

    Serverless functions are back with expanded support for UI extensions, including app settings and app pages, and can be executed in test accounts.

  • App Pages with UI Extensions

    Build custom, full-page experiences for your app directly within HubSpot using React, and powered by UI extensions.

  • Code Sharing for UI Extensions

    Use npm workspaces to share UI extension code between app cards, pages, and settings.

  • Date-based Versioned APIs

    We're introducing date-based versioning APIs which brings clearer expectations around timing of change with consistent windows for updates and support.

  • Webhooks Journal API Updates

    We've made updates to the Webhooks Journal API, including batched reads, CRM object filtering, list membership subscriptions, and a snapshot status polling endpoint.
Coming Soon

Developer Platform Roadmap

Get a first look at the Developer Platform Roadmap for H1 2026.

Dev Platform H1 26 Roadmap

Click image to enlarge.

Craft seamless experiences with the latest features on the HubSpot Developer Platform

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Bring Data into HubSpot to Fuel Your Applications

Efficiently integrate the data your solutions need so you can automate workflows and scale with confidence.
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Surface Insights and Bring Data to Life

Add dashboards, app cards, app pages, and more to your solutions with HubSpot's APIs and UI extensions, giving users clear, actionable views.
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Act on Data to Keep Work Moving

Use workflows, webhooks, and custom actions to execute the next step the moment data updates to keep users in flow and out of tool-hopping.

Start Building with Value