Developer Blog

HubSpot Date-based API Versioning Migration Playbook

hseligson@hubspot.com (Hannah Seligson) — Tue, 19 May 2026 14:35:08 GMT

We designed this playbook to serve both developers maintaining source code and builders who manage automations, middleware, Postman collections, or HubSpot configurations. The objective remains the same for both groups: shift HubSpot API versioning from a reactive emergency response to a predictable, low-risk, scheduled maintenance workflow that integrates seamlessly into your existing development cycles!

Introducing hubspot-go: A Community Go SDK for HubSpot Developers

anzekopko2002@gmail.com (Anze Koprivec) — Thu, 14 May 2026 17:03:54 GMT

If you've ever tried to build a production-grade HubSpot integration in Go, you've probably hit the same wall we did: there previously wasn't a first-party Go SDK. The community options that exist tend to cover a slice of the API, are unmaintained, or feel awkward to use from idiomatic Go code.

Building Better, Together: The Role of Mentorship in the HubSpot Ecosystem

jenixon@hubspot.com (Jennifer Nixon) — Tue, 12 May 2026 16:20:47 GMT

An Open Platform is built on more than just an API for everything. And I'm not talking about MCPs, Agents, and other AI tools either.

HubSpot Service Keys: The Right API Credential for Data Integrations

hseligson@hubspot.com (Hannah Seligson) — Mon, 04 May 2026 13:45:56 GMT

If you’ve been building on HubSpot for a while, the last year or two has felt like a lot of things moving at once. The legacy public app creation flow is being sunset. The Developer Platform has shifted towards modern development practices that include defining integrations as code - aka, “projects” and using the CLI. Features you used to access in a few clicks now come with a “spin up a local dev environment” prerequisite.

How to build a Notion database with the HubSpot Dev MCP and Claude Code

njotwani@hubspot.com (Nikita Jotwani) — Fri, 01 May 2026 16:35:55 GMT

Consider what goes into building with a new MCP server. You're not just learning a new tool; you're learning a workflow with its own patterns, edge cases, and best practices. HubSpot's Dev MCP is well-designed (if I do say so myself!) and the docs are thorough, but with 20+ tools across projects, CMS, apps, and documentation; there's a lot of territory to cover. This isn't unique to HubSpot... it's the reality of picking up any MCP server worth building with.

A Developer’s Guide to HubSpot’s Date-Based API Versioning

hseligson@hubspot.com (Hannah Seligson) — Mon, 30 Mar 2026 19:45:57 GMT

If you’ve built against HubSpot’s public APIs, you’ve probably run into some versioning friction: v3 vs v4, legacy vs “next-gen” APIs, and the occasional breaking change that shows up where you didn’t expect it.

Planning Your Migration on the HubSpot Developer Platform

dedson@hubspot.com (Dennis Edson) — Mon, 23 Feb 2026 15:16:34 GMT

NOTE: HubSpot Projects v2025.1 will now be deprecated on August 1, 2026. This blog has been updated to reflect a later deprecation date.

In software development, “stable” can be a double-edged sword. If you have a HubSpot app running today, that’s a good thing—customers are using it, data is flowing and you may not have touched the code in months. But in a platform ecosystem, stability only holds if the ground beneath it stays the same.

Production-Ready OAuth Token Management for HubSpot Integrations

hseligson@hubspot.com (Hannah Seligson) — Tue, 13 Jan 2026 15:28:47 GMT

If you’ve integrated with HubSpot’s APIs, you know the OAuth handshake is relatively straightforward (if you don’t, no worries, we’ll review it below). But here’s the thing: getting that initial token is the easiest part. The real challenges start when you’re managing tokens in production. This is because you’re dealing with token validation across multiple services, updating scopes as your app grows, migrating old integrations in a multi-tenant setup, and keeping permissions consistent as things change. This is the stuff that keeps us up at night.

Introducing Automated Testing for UI Extensions

Patrick Steele-Idem — Tue, 16 Dec 2025 17:49:10 GMT

We're thrilled to announce the launch of comprehensive testing utilities for the HubSpot UI Extensions SDK—a feature that developers have been requesting since we first launched the platform. Today, building reliable, well-tested UI extensions becomes significantly easier with our new testing framework, complete with full TypeScript type safety.

How to CODE: Simplifying the Developer Experience with HubSpot

njotwani@hubspot.com (Nikita Jotwani) — Thu, 13 Nov 2025 17:00:02 GMT

Developers don’t come to HubSpot asking for a tool. They come with a customer problem to solve. In our early days, they would meet documentation that explained how an API works, but not when or why to choose it. This post is about how we simplified HubSpot’s developer onboarding experience with CODE: The Center of Developer Excellence.