https://seamless.engineering/api-changelog/hubspot/ Every HubSpot API change our daily monitoring detects: breaking changes, deprecations and additions. en Sat, 10 Oct 2026 00:10:15 GMT 720 https://seamless.engineering/api-changelog/hubspot/#02b0d2475414 hubspot-02b0d2475414 Sat, 19 Sep 2026 12:00:00 GMT Breaking Breaking (2026-09-08). Pipeline and pipeline stage delete endpoints will validate references by default starting with the 2026-09 API version: Pipeline and pipeline stage delete endpoints will validate references by default in 2026-09 API version, potentially preventing deletion of referenced objects. https://seamless.engineering/api-changelog/hubspot/#69bb465e85cf hubspot-69bb465e85cf Tue, 15 Sep 2026 12:00:00 GMT New feature New feature (2026-09-15). General availability of developer and builder updates in Fall Spotlight 2026 release on Developer Platform version 2026.09. https://seamless.engineering/api-changelog/hubspot/#6b009df54cbc hubspot-6b009df54cbc Tue, 15 Sep 2026 12:00:00 GMT Breaking Breaking (2026-09-15). What's Going Unsupported and When: HubSpot announced end of support for v1-v3 APIs, legacy public apps, and legacy private apps with September 2027 enforcement date. https://seamless.engineering/api-changelog/hubspot/#3e1b45071afe hubspot-3e1b45071afe Wed, 09 Sep 2026 12:00:00 GMT Breaking Breaking (2026-08-11). CRM API Write Validation Enforcement Starting with the 2026-09 API Version: Starting September 8, 2026, HubSpot will enforce admin-configured validation rules on all CRM API write paths, requiring integrations to handle new validation errors. https://seamless.engineering/api-changelog/hubspot/#079a3595dc42 hubspot-079a3595dc42 Wed, 09 Sep 2026 12:00:00 GMT Breaking Breaking (2026-07-23). Pipeline and pipeline stage delete endpoints will validate references by default starting with the 2026-09 API version: Pipeline and pipeline stage delete endpoints will validate references by default in the 2026-09 API version, potentially breaking integrations that delete pipelines with existing references. https://seamless.engineering/api-changelog/hubspot/#02b0d2475414 hubspot-02b0d2475414 Tue, 08 Sep 2026 12:00:00 GMT Breaking Breaking (2026-09-08). Pipeline and Pipeline Stage Delete Endpoints Validation by Default in 2026-09: Pipeline and pipeline stage delete endpoints will validate references by default starting with the 2026-09 API version, potentially breaking integrations that delete pipelines with existing references. https://seamless.engineering/api-changelog/hubspot/#301fb6869e35 hubspot-301fb6869e35 Thu, 27 Aug 2026 12:00:00 GMT Other Other (2026-07-31). Monthly rollup of API and platform updates from August 2026. https://seamless.engineering/api-changelog/hubspot/#c1665e6acd07 hubspot-c1665e6acd07 Thu, 27 Aug 2026 12:00:00 GMT Breaking Breaking (2026-08-27). HubSpot is permanently removing the ability to create new legacy private apps through the account UI, requiring users to migrate to Service Keys via Developer Platform Projects. https://seamless.engineering/api-changelog/hubspot/#da180713f043 hubspot-da180713f043 Fri, 14 Aug 2026 12:00:00 GMT Deprecation Deprecation (2026-08-14). December 4, 2026: Pipelines API V1 will be sunset on December 4, 2026, requiring integrations to migrate to 2026-03 or later API versions. https://seamless.engineering/api-changelog/hubspot/#aebff85c2ede hubspot-aebff85c2ede Thu, 13 Aug 2026 12:00:00 GMT Deprecation Deprecation (2026-08-12). Node 18.x and 20.x runtimes are being deprecated as supported versions for Chatflows custom code snippets; users must upgrade to newer Node versions. https://seamless.engineering/api-changelog/hubspot/#3e1b45071afe hubspot-3e1b45071afe Tue, 11 Aug 2026 12:00:00 GMT Breaking Breaking (2026-08-11). CRM API Write Validation Enforcement Starting with the 2026-09 API Version: Starting with the /2026-09/ API version on September 8, 2026, HubSpot will enforce admin-configured validation rules on all CRM API write paths; integrations creating or updating CRM records must handle validation errors. https://seamless.engineering/api-changelog/hubspot/#975125c3ed6f hubspot-975125c3ed6f Fri, 31 Jul 2026 12:00:00 GMT New feature New feature (2026-07-31). Monthly updates including raised owner property limit, larger Webhooks Journal batch sizes, new API usage chart, and public betas for Contract Imports and Payment Links API. https://seamless.engineering/api-changelog/hubspot/#89395ffab45f hubspot-89395ffab45f Fri, 31 Jul 2026 12:00:00 GMT New feature New feature (2026-07-31). Raised owner property limit, expanded Webhooks Journal batch sizes, and added historical API usage chart with public betas for Contract Imports and Payment Links API. https://seamless.engineering/api-changelog/hubspot/#44cd0202147a hubspot-44cd0202147a Fri, 31 Jul 2026 12:00:00 GMT New feature New feature (2026-07-31). Payment Links API has been released in public beta, enabling new payment processing capabilities. https://seamless.engineering/api-changelog/hubspot/#ee662f7412ec hubspot-ee662f7412ec Mon, 13 Jul 2026 12:00:00 GMT Breaking Breaking (2026-07-13). Customer Agent Lead Status contact property becoming read-only: The hs_customer_agent_lead_status contact property will become read-only, requiring updates to integrations that write to this field. https://seamless.engineering/api-changelog/hubspot/#2bbadf1b754c hubspot-2bbadf1b754c Mon, 29 Jun 2026 12:00:00 GMT Other Other (2026-06-29). Monthly rollup of developer platform updates from June 2026. https://seamless.engineering/api-changelog/hubspot/#1efb004c90ae hubspot-1efb004c90ae Tue, 23 Jun 2026 12:00:00 GMT New feature New feature (2026-06-23). New command-line interface for AI agents to interact with HubSpot CRM data, now available in public beta. https://seamless.engineering/api-changelog/hubspot/#8b1cf4f065e5 hubspot-8b1cf4f065e5 Wed, 10 Jun 2026 12:00:00 GMT New feature New feature (2026-06-10). SDKs updated to support date-based API versioning with new /YYYY-MM/ format, generated from centrally managed API specification. https://seamless.engineering/api-changelog/hubspot/#63fe94dace57 hubspot-63fe94dace57 Thu, 28 May 2026 12:00:00 GMT New feature New feature (2026-05-28). Monthly updates including Breeze Assistant workflow enhancements and other platform improvements. https://seamless.engineering/api-changelog/hubspot/#6d2350f925a6 hubspot-6d2350f925a6 Tue, 26 May 2026 12:00:00 GMT Breaking Breaking (2026-05-26). Beginning May 26, 2026, the ability to create new legacy public apps will be discontinued. https://seamless.engineering/api-changelog/hubspot/#f8aadb0578e8 hubspot-f8aadb0578e8 Thu, 07 May 2026 12:00:00 GMT Breaking Breaking (2026-05-07). Updated requirements for listed and certified apps in HubSpot Marketplace to align with current platform standards and deprecations. https://seamless.engineering/api-changelog/hubspot/#8492f8a5ba00 hubspot-8492f8a5ba00 Mon, 04 May 2026 12:00:00 GMT Other Other (2026-05-04). Updates to developer terms and ecosystem vision for the agent era, reflecting HubSpot's strategic direction. https://seamless.engineering/api-changelog/hubspot/#73969ab7b463 hubspot-73969ab7b463 Fri, 01 May 2026 12:00:00 GMT New feature New feature (2026-04-14). Major updates including general availability of date-based versioned APIs and Developer Platform version 2026.03. https://seamless.engineering/api-changelog/hubspot/#3dd8f7c52a66 hubspot-3dd8f7c52a66 Fri, 01 May 2026 12:00:00 GMT New feature New feature (2026-02-26). Update CRM Records & Access more Objects and Engagements: HubSpot ChatGPT connector now supports creating/updating CRM records and logging activities directly from ChatGPT. https://seamless.engineering/api-changelog/hubspot/#33c46dbb994b hubspot-33c46dbb994b Thu, 30 Apr 2026 12:00:00 GMT Other Other (2026-04-30). Monthly updates including legacy CRM card migration tool availability and other platform improvements. https://seamless.engineering/api-changelog/hubspot/#0cbd072be431 hubspot-0cbd072be431 Sun, 26 Apr 2026 12:00:00 GMT New feature New feature (2026-02-27). Monthly updates including enhanced OAuth install logging, Custom Events for Pro customers, deeper CRM associations, and UI improvements. https://seamless.engineering/api-changelog/hubspot/#73969ab7b463 hubspot-73969ab7b463 Tue, 14 Apr 2026 12:00:00 GMT New feature New feature (2026-04-14). Major announcement of date-based versioned APIs general availability and Developer Platform version 2026.03, representing significant API infrastructure changes. https://seamless.engineering/api-changelog/hubspot/#4b8e5ad1dd6c hubspot-4b8e5ad1dd6c Mon, 13 Apr 2026 12:00:00 GMT New feature New feature (2026-04-13). Remote HubSpot MCP server graduates from beta to GA with new write capabilities, Activity history, marketing content objects, and organizational context support. https://seamless.engineering/api-changelog/hubspot/#ff776901e207 hubspot-ff776901e207 Tue, 07 Apr 2026 12:00:00 GMT Deprecation Deprecation (2026-05-11). HubSpot will resume automatic migration from legacy Cookie Consent Banner v1 to v2 starting May 11, 2026, requiring developers to ensure v2 compatibility. https://seamless.engineering/api-changelog/hubspot/#6daa05ed4bba hubspot-6daa05ed4bba Thu, 02 Apr 2026 12:00:00 GMT Breaking Breaking (2026-04-01). HubSpot will migrate content rendering from legacy JRE locale dataset to CLDR standard; most content unchanged but some localization behavior may differ. https://seamless.engineering/api-changelog/hubspot/#865bcd082e91 hubspot-865bcd082e91 Tue, 31 Mar 2026 12:00:00 GMT Breaking Breaking (2026-03-30). New API versioning system using /YYYY-MM/ format (e.g., /2026-03/) instead of v1, v2, v3, v4 to denote the month APIs were shipped. https://seamless.engineering/api-changelog/hubspot/#34d02ae7cc1f hubspot-34d02ae7cc1f Sun, 29 Mar 2026 12:00:00 GMT Other Other (2026-02-02). Monthly developer updates announced for January 2026. https://seamless.engineering/api-changelog/hubspot/#06c91d80eeec hubspot-06c91d80eeec Sat, 28 Mar 2026 12:00:00 GMT New feature New feature (2026-03-27). Monthly updates including ability to view app objects in Data Model Builder and faster video-based app review process. https://seamless.engineering/api-changelog/hubspot/#b013ca1cabb1 hubspot-b013ca1cabb1 Thu, 26 Mar 2026 12:00:00 GMT Deprecation Deprecation (2026-02-09). HubSpot will automatically migrate accounts from legacy Cookie Consent Banner v1 to v2 starting May 11, 2026, requiring integration updates. https://seamless.engineering/api-changelog/hubspot/#0cbd072be431 hubspot-0cbd072be431 Thu, 26 Mar 2026 12:00:00 GMT New feature New feature (2026-02-27). Monthly updates including enhanced OAuth install logging, Custom Events for Pro customers, and deeper CRM associations and UI improvements. https://seamless.engineering/api-changelog/hubspot/#63e549a01210 hubspot-63e549a01210 Thu, 26 Mar 2026 12:00:00 GMT New feature New feature (2026-02-19). Local HubSpot Developer MCP Server is now generally available for creating apps and CMS assets through agentic tools. https://seamless.engineering/api-changelog/hubspot/#bb877ec4f184 hubspot-bb877ec4f184 Thu, 26 Mar 2026 12:00:00 GMT Breaking Breaking (2026-01-26). Major CLI release with breaking changes including new minimum Node.js version (Node 20), removal of deprecated commands and legacy behaviors, and dropped support for older project versions. https://seamless.engineering/api-changelog/hubspot/#04bee2c72f82 hubspot-04bee2c72f82 Thu, 26 Mar 2026 12:00:00 GMT Other Other (2026-03-09). All legacy developer accounts being upgraded to unified Developer Platform, consolidating separate tools into single HubSpot account. https://seamless.engineering/api-changelog/hubspot/#441001c82c99 hubspot-441001c82c99 Thu, 26 Mar 2026 12:00:00 GMT Other Other (2026-03-23). Added confirmation dialog when HubSpot users install third-party apps that haven't been reviewed by HubSpot. https://seamless.engineering/api-changelog/hubspot/#29371e34259e hubspot-29371e34259e Thu, 26 Mar 2026 12:00:00 GMT New feature New feature (2026-01-27). New OAuth v3 API endpoints released with enhanced security and compliance standards, requiring authentication method updates for existing integrations. https://seamless.engineering/api-changelog/hubspot/#fdada71fc5d9 hubspot-fdada71fc5d9 Thu, 26 Mar 2026 12:00:00 GMT New feature New feature (2026-01-20). Self-Service MCP Auth Apps for the HubSpot Remote MCP Server: Partners and customers can now build and manage their own AI connectors to the HubSpot Remote MCP Server through a self-service interface. https://seamless.engineering/api-changelog/hubspot/#3dd8f7c52a66 hubspot-3dd8f7c52a66 Thu, 26 Mar 2026 12:00:00 GMT New feature New feature (2026-02-26). Update CRM Records & Access more Objects and Engagements: HubSpot ChatGPT connector now supports creating and updating CRM records and logging activities directly from ChatGPT.