HubSpot for Developers

Businesses are increasingly sending a new kind of user into HubSpot: Agents. Those agents need to be able to choose the best path for the task at hand, whether that's completing an action with a human in the loop, or automating repeated tasks in the background. The best agentic platforms will have options.  Today we're introducing the HubSpot Agent CLI as another agent infrastructure. It complements our existing APIs and MCP server, and it's really well-suited for automating bulk tasks you need to perform regularly, like getting a daily scan of the pipeline for deals closing this week. Our job is to make sure HubSpot is the platform that has the best AX (agentic experience) alongside our great UX, as Dharmesh Shah says. That's what building for the agent era actually looks like. Read the full post here: https://lnkd.in/eKWbcBXp

The May HubSpot Developer Newsletter has dropped 🎉 Highlights: Duncan Lennox, HubSpot's CPTO laid out the vision for an open ecosystem in the agent era — full API parity for AI agents and developers with the platform built to serve both. Builder + Dev Events land on June 3 with the virtual Dev Platform Playground in the morning and the in-person Build Mode in NYC for TECH WEEK by a16z that evening. Also in this issue: �� Ecosystem Mentorship Program applications are open for the next mini-cohort, Building with AI, running June 10 – September 5 → Developer MCP Server techniques in seven short clips → New DBV Migration Playbook, Service Keys deep-dive → Two API deprecations announced: v1 OAuth and v4 APIs 👇 Read the full newsletter below 👇

Plot twist for Mini-Cohort 2.0: Building with AI 👀 We’re swapping the knowledge share for a 90-minute AI Hackathon co-hosted with Boris Michel, VP of Growth & Strategy at mpmX and creator of VibeSpot and ClickSpot, which launched today! 👏👏👏 This won’t be the usual “here’s a problem, now go solve it” kind of hackathon. We’re choosing a creative theme and letting participants define the problem, the use case, and how they want to build the solution. Since it's summer, we're thinking maybe “travel companion” as a theme. One person might build an itinerary planner. Another might build a packing assistant. Someone else might build a local food finder, a family trip negotiator, or a “help me not overbook every vacation day” agent. Same theme, different ideas, and endless possibilities! That’s the magic we want to create, drop your best theme ideas below👇

‼️ 😍 Here's a whole WHACK of thrilling HubSpot for Developers builder community updates! Probably too much for one LinkedIn post, but nevertheless... 🗽 🍎 New York, I'm so excited to share the confirmed panelists for our June 3rd NY TECH WEEK by a16z event: Build Mode! 🤖 💻 We're thrilled to be welcoming Lica Wouters 👩💼🌟, Andreas Wernicke and Juli Durante -  three RevOps/Go-to-Market leaders that represent the absolute bleeding edge of AI adoption in their respective domains.  🧠 💡 Our moderator, Chris Riley, will be picking their brains about building with LLM connectors, building with MCP, even building with OpenClaw. And - it's a very sweet in-person follow up to our Dev Platform Playground event that happens earlier on the day of June 3rd (link in comments) - featuring an AI and MCP session led by the amazing Jon McLaren! 👯♀️ 🤝 And of course, your favorite builder community dream team, myself and Jennifer Nixon, will be there to welcome you! We think you're going to walk away with ✨ at least✨ three things you'll want to try after the panel, and we can't wait to hear what they are. 🤯 🧑🏫 As if things weren't serendipitous enough, a week after our jam-packed June 3rd, we're launching the Building with AI Mini-Cohort as part of the Ecosystem Mentorship Program (link in comments). If you've been dabbling in AI and working in the HubSpot ecosystem for a while, we need you to sign up as a mentor and learn alongside eager mentees as we all navigate this new tech together. 💫 🤩 I sure do love it when the stars align. Can't wait to see you both online and in person on June 3rd, AND in our next EMP Mini-Cohort, HubSpot builders! 

For years, we called ourselves 𝘋𝘦𝘷𝘦𝘭𝘰𝘱𝘦𝘳 𝘙𝘦𝘭𝘢𝘵𝘪𝘰𝘯𝘴. It was accurate. Our job was literally to support developers building on HubSpot's platform, and it still is. But the landscape has changed… "developer" just doesn’t describe the full spectrum of people we serve today. That’s a good thing. 😉 Today, we're officially becoming 𝐁𝐮𝐢𝐥𝐝𝐞𝐫 𝐑𝐞𝐥𝐚𝐭𝐢𝐨𝐧𝐬! It's not a rebrand for the sake of it. We've always had builders, deeply technical, creative, and committed people who've shaped what HubSpot can do. That's not changing. What's changing is who gets to be a builder. We see customers enabling Claude and ChatGPT connectors for the first time. Marketers automating workflows. Ops teams customizing CRM views. Partners shipping fully AI-powered solutions. And now agents - 𝘢𝘤𝘵𝘶𝘢𝘭 𝘈𝘐 𝘢𝘨𝘦𝘯𝘵𝘴 - executing tasks and acting on behalf of customers. The community we serve has evolved, and we are evolving right along with it. The hard line between users and builders is blurring. It's a continuum, from the curious user exploring AI tools for the first time, to the seasoned developer shipping production apps, to the partner building a business on our platform. Everyone deserves a team that meets them exactly where they are. That's what Builder Relations is built to do. This shift didn't happen in a vacuum. Duncan Lennox recently laid out HubSpot's vision for an open ecosystem, agents that can run on HubSpot and run HubSpot. We are rallying around this vision with support for the full builder continuum. Some of this is already live. The rest is coming fast. Builder Relations leaders Chris Riley, Sarah Jane (SJ) Morris, Zachary Wolfson, Isaac Takushi, and Caitlin Siegrist are mobilizing their teams for this vision. You’ll see it show up in our programs, our documentation, and the way we support our community. Whether you've been building on HubSpot for years or you're just getting started, this team exists for you. 𝐂𝐨𝐦𝐞 𝐛𝐮𝐢𝐥𝐝 𝐰𝐢𝐭𝐡 𝐮𝐬! #BuilderRelations #DeveloperRelations #DevRel #Builders

HubSpot for Developers legacy v4 #APIs will move to an unsupported state on March 30, 2027. As part of HubSpot’s transition to date-based API versioning, v4 APIs will no longer receive updates, bug fixes, or stability guarantees after that date. If your app or integration still relies on endpoints like /crm/v4/, now is the time to plan your migration to a supported date-based API version (currently 2026-03). What developers should do now: ✔️ Audit applications and integrations using v4 APIs ✔️ Update integrations to a supported date-based version ✔️ Test and deploy changes before March 30, 2027 This change also impacts HubSpot Marketplace certification and recertification. Apps using unsupported API versions may no longer meet Marketplace requirements. HubSpot’s move to date-based versioning is designed to create clearer support timelines, more predictable upgrades, and a more stable developer experience. Learn more in the API documentation, migration playbook, and more in the latest changelog: https://lnkd.in/ePkHJrju

If you build with HubSpot for Developers #APIs, this is an important update that should already be on your radar 👀 HubSpot moved to date-based API versioning in March with the goal of introducing a more predictable, transparent way to manage API updates and breaking changes. Instead of navigating a mix of semantic v1, v3, v4 version, developers will see versions like: ➡️ /2026-03/ ➡️ /2026-09-beta/ The goal is simple: ✅ predictable release cycles ✅ clearer support timelines ✅ fewer unexpected breaking changes ✅ easier migration planning for integrations and apps We put together a migration playbook that breaks down: - how date-based versioning works - what it means for existing integrations - support lifecycle expectations - how to prepare your apps with minimal friction If you’re maintaining HubSpot integrations or building apps on the platform, this guide will help you plan ahead with confidence! 📖 Read the full post here: https://lnkd.in/eGZYypCk Would love to hear how your team approaches API version migrations and long-term integration maintenance. 🚀

Merci merci HubSpot for Developers and Jennifer Nixon for a nice treat following the mini-cohort ”Built Together” award 🤩 👌 Lovely thermos from Fellow that goes well with our coffee grinder from the same brand (I ground by hand for 7 years before we invested in one, not a day too soon). I have successfully rejigged my setup now to Claude Code (I just could not figure out how to pay for proper access to Gemini CLI and couldn’t stand being throttled that much, had to abandon halfway through my last project 🤷♀️) and am super excited for the next mini-cohort kicking off in June. Oh, and go. Sign up. Be mentored. Be a mentor. It is awesome 🙌 https://lnkd.in/dcyivrs3 #HubSpot #Mentorship

Anze Koprivec and the Scopious Digital team ported HubSpot's official Node.js SDK to idiomatic Go and released it under MIT. The port covers the full CRM (18+ object types), CMS, marketing, automation, OAuth, webhooks and files APIs. From his post: 🟢 Why Go fits HubSpot workloads (concurrency, type safety, deployment) 🟢 What's in the box (CRM, CMS, marketing, automation, OAuth, webhooks) 🟢 A five-minute create → search → update walkthrough Community work like hubspot-go makes the HubSpot ecosystem stronger. Anze maintains the port in the open and real usage from developers shapes what comes next. Read Anze's walkthrough → https://bit.ly/4wuY7ic #HubSpotDevelopers #Golang