Developer Support

APIs & Integrations Ask questions and find answers about HubSpot’s APIs. CMS Development All things CMS Development. Ask questions. Give advice. Come join the Developer Community! Developer Announcements A place to read about Developer focused product releases, changes and events

Topic	Replies	Views	Activity
About the Developer Support category Developer Support	0	199	June 12, 2026
How to use Secrets with Python custom code automation APIs & Integrations	5	4286	September 1, 2026
/automation/v4/flows/performance has no dated successor ahead of the v4 sunset APIs & Integrations developer	2	27	August 31, 2026
Validating Properties AND Form Fields through the HubSpot Forms API APIs & Integrations developer-tools	4	42	August 31, 2026
Property history identifies the write event for workflow changes, not the workflow APIs & Integrations developer	1	13	August 31, 2026
How to integrate a gratuity calculator API into HubSpot workflows? APIs & Integrations free	4	799	August 31, 2026
Merging contacts (now) creates a NEW ID? APIs & Integrations contacts	6	1244	August 28, 2026
App listing validator rejects setup doc URL both ways (lowercase = "misspelled", capitalized = 404) Developer Support third-party-apps	2	36	August 21, 2026
HubSpot CLI project validate and upload fail with HTTP 500 on project-schema endpoint APIs & Integrations developer-tools	1	24	August 21, 2026
Issue with Child Theme Developer Support free	6	76	August 28, 2026
Agent Tool testing blocked by credits Developer Support third-party-apps , contact-support , breeze , app-marketplace	3	44	August 28, 2026
HubSpot Embedded Form Callbacks Not Firing (onFormSubmit / onFormSubmitted) – Unable to Redirect Aft APIs & Integrations forms	4	1404	August 28, 2026
External HubSpot form: localized consent language and DACH DOI handling across Umbraco pages Developer Support format-data-actions , cms-development-tools	1	15	August 28, 2026
Meetings booked via Scheduler v3 API don't get native Google Meet conferencing (AI Notetaker never Developer Support developer-tools	3	23	August 27, 2026
Developer updates for August 2026 Developer Announcements announcements	0	48	August 27, 2026
Re: Adding <fieldset> lacks a <legend> element as first child HubSpot Forms CMS Development professional	5	1897	August 27, 2026
Legacy Private App Creation Being Disabled Developer Support announcements	0	23	August 27, 2026
Request for Guidance on Hierarchical Property Mapping in HubSpot MCP Integration APIs & Integrations free , developer-tools	1	22	August 27, 2026
Looking for 3 HubSpot users with Conta Azul (Brazil ERP) — native connector beta APIs & Integrations developer-tools	1	22	August 26, 2026
Looking for 3 HubSpot users to beta test a native WhatsApp Business API integration APIs & Integrations third-party-apps , professional	3	75	August 26, 2026
Browser cookies issue when connecting an OAUTh project APIs & Integrations oauth	1	24	August 26, 2026
Is HubSpot dropping support for their Python SDK? APIs & Integrations python	1	23	August 26, 2026
Create and Update a Data Source in Data Studio via API APIs & Integrations professional	4	28	August 25, 2026
Legacy CRM Card to App Card Migration not completing Developer Support contact-support	2	36	August 25, 2026
Developer Support: SpotDraft APIs & Integrations	1	15	August 25, 2026
Blocked By - Acceptable Use Policy - Can't Find Where to Sign Developer Support app-marketplace	1	27	August 25, 2026
Credit Memos API Access, 403 Error After Enabling All Scopes APIs & Integrations developer-tools	3	385	August 25, 2026
How to gate a specific video + PDF download button on a public page (not the entire page) using Memb Developer Support hubspot-academy , contacts	2	40	August 25, 2026
Core Web Vitals Assessment always fail CMS Development local-development	3	1515	August 25, 2026
Preloading dynamic image in template (react module) CMS Development javascript	5	1498	August 25, 2026