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HubSpot Developer Changelog

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HubSpot Developer Changelog Web

Sunsetting design manager serverless functions and older Node.js runtimes for custom code actions

HubSpot is sunsetting serverless functions built in the design manager, and Node.js 20 and earlier for workflow custom code actions. All of these run on runtime versions that no longer receive security updates. To keep your website features and workflows working, move your design manager serverless functions to developer projects, and update your custom code actions to Node.js 24. To make migratio…

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HubSpot Developer Changelog Web

October 2026 Rollup

October’s developer and builder updates covers the general releases of connected quote-to-cash tooling, permission-based AI access to sensitive data in public beta, a new centralized data model overview, as well as increased limits for deal approvers.

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HubSpot Developer Changelog Web

Legacy APIs and Apps: What's Going Unsupported and When

At Fall Spotlight on September 15, HubSpot is announcing the end of support for v1-v3 APIs, legacy public apps, and legacy private apps, all with a September 2027 enforcement date. If your integration or app uses any of these, you have a 12-month window to migrate. This changelog covers v1-v3. Support for v4 is ending on its own separate timeline, March 30, 2027, which was announced earlier this y…

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HubSpot Developer Changelog Web

Fall 2026 Spotlight - Developer / Builder Updates

This changelog rounds up the developer and builder updates in HubSpot's Fall Spotlight 2026 release: what's now generally available on Developer Platform version 2026.09, the new and updated APIs, the APIs entering public beta, and the latest AI builder tools. To learn more about what was announced during UNBOUND, visit the general Spotlight page and the developer Spotlight page. This rollup cover…

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HubSpot Developer Changelog Web

August 2026 Rollup

August’s developer updates expand how teams bring data into HubSpot and automate CRM operations. This month introduces webhook data sources for Data Studio, preserves active workflow enrollments when records are merged, and adds app object support to association workflow actions. Together, these changes reduce custom integration work and help automations continue with less manual intervention.

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HubSpot Developer Changelog Web

Legacy Private App Creation Being Disabled

HubSpot is permanently removing the ability to create new legacy, non-Project based, private apps through the account UI. Users needing similar functionality should use Service Keys, available via Developer Platform Projects version 2026.09 or later, which supports system-to-system integrations. This sunset impacts customer accounts on two timelines based on their age. All existing legacy private…

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HubSpot Developer Changelog Web

Pipelines API V1 Sunset: December 4, 2026

HubSpot will sunset the Pipelines API V1 on December 4, 2026. After this date, the API will no longer be supported. If your integration relies on V1 endpoints, you'll need to migrate to the 2026-03 or newer version before the deadline to avoid disruption.

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HubSpot Developer Changelog Web

July 2026 Rollup

This month's updates include a raised owner property limit, larger Webhooks Journal batch sizes, and a new historical API usage chart — plus public betas for Contract Imports and the Payment Links API. Read on for the details.

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HubSpot Developer Changelog Web

Breaking Change: Pipeline and pipeline stage delete endpoints will validate references by default starting with the 2026-09 API version

Availability: This is a breaking change for the next GA date-based API version, /2026-09/. It does not change the behavior of the current GA API version or earlier versions. Integrations will see this behavior only after moving to /2026-09/ or later. Learn more about HubSpot's Date Based Versioning What is changing? Starting in version /2026-09/ of the Pipelines API, HubSpot will validate referenc…

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HubSpot Developer Changelog Web

Developer updates for June 2026

June’s developer updates include new CRM and customer success signals, cleaner subscription-status histories, expanded Knowledge Vault support for structured data, app object activity association controls, quote module customization, and several CLI improvements. This roundup also covers custom event timeline configuration and new Remote MCP server capabilities for content analytics and landing pa…

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HubSpot Developer Changelog Web

HubSpot Agent CLI available in public beta

The HubSpot Agent CLI is a new command-line interface purpose-built for AI agents to interact with your HubSpot CRM data — reading records, running searches, creating and updating objects, managing pipelines, properties, associations, workflows, and more. It's designed for agentic environments like Claude Cowork, Claude Code, and OpenAI Codex, and is particularly well-suited for scheduled automati…

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HubSpot Developer Changelog Web

Updated SDKs for Date-based Versioning

We’ve improved our SDK releases to support date-based API versioning, the new /YYYY-MM/ format introduced across HubSpot’s APIs. Generated from a centrally managed API specification, SDKs now cover more endpoints across multiple languages and release faster, so your clients stay aligned with the APIs you're building on.

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HubSpot Developer Changelog Web

May 2026 Rollup

This month brings a set of updates aimed at making everyday building better. Breeze Assistant steps further into your workflows, a new useCrmSearch hook shipped for UI extensions, stage calculated properties available for custom objects and the HubSpot CLI got a fresh round of improvements — plus updates to blog author attribution, IP range webhooks, and more. Read on below for the details.

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HubSpot Developer Changelog Web

v1 OAuth API Deprecation

We have introduced the latest date-based, versioned OAuth API for token issuance and introspection, as announced previously here. As adoption of the new OAuth API grows, we are beginning to deprecate the legacy v1 OAuth API. As part of this transition, a new REVOKE endpoint is also being introduced for the latest date-based versioned OAuth API, and the v1 API will be fully deprecated on February 1…

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HubSpot Developer Changelog Web

April 2026 Rollup

This month, on top of all the of the amazing updates and releases from Spring Spotlight 2026, we also have updates regarding the availability of our legacy CRM card migration tool, new features for the Custom Channels API, and more. Make sure to read on below for more details.