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The APIs in this section are currently in beta. By using the APIs, you agree to HubSpot’s Developer Terms and Developer Beta Terms. Note that the APIs are still under active development and are subject to change based on testing and feedback.
The 2026-09-beta API reference section covers HubSpot’s upcoming set of date-versioned endpoints, available for early access. These APIs use the 2026-09-beta version segment in request paths, and follow the same date-versioned path pattern introduced in the 2026-03 APIs. For example, to retrieve a form using the beta Forms API: 
GET /marketing/forms/2026-09-beta/{formId}
Because these APIs are in beta, their schemas and behavior are subject to change before general availability. Test them in a development environment before using them in production.

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APIs in this beta

  • Marketing Forms API: (/marketing/forms/2026-09-beta/) create, retrieve, update, and delete HubSpot forms; covers hubspot, captured, flow, and blog_comment form types
  • Data Studio File Ingestion API: (/data-studio/data-source/2026-09-beta/) upload tabular files directly into HubSpot Data Studio as independent datasets
  • Automation workflows API: (/automation/2026-09-beta/) create and manage workflows (flows), define custom action types, and retrieve workflow ID mappings
  • Conversations API: (/conversations/conversations/2026-09-beta/) manage inboxes, channels, channel accounts, threads, messages, and conversation actors
  • Forecasts API: (/crm/objects/2026-09-beta/, /forecast-settings/2026-09-beta/) search forecast records and create and manage forecast types
Last modified on March 30, 2026