--- title: "Zendesk API Help Center Templating API v1, v2, and v3 phased end of life: 2027-03-01 | Harbyn" description: "Zendesk API Help Center Templating API v1, v2, and v3 phased end of life, effective Mar 1, 2027." canonical: "https://harbyn.com/changes/zendesk/2026-09-14-templating-api-v1-v2-and-v3-phased-end-of-life" last-updated: 2026-09-29 --- # Zendesk API Help Center Templating API v1, v2, and v3 phased end of life Markdown version of . Deprecation - Zendesk API. high severity. In effect. Upcoming. Zendesk blocks imports of Help Center themes on Templating API v1, v2, and v3 for new accounts from September 14, 2026, and for all accounts from March 1, 2027. On August 3, 2027, remaining legacy themes are automatically upgraded to v4 and v1-v3 are removed. Upgrade to Templating API v4. 127 days left: the deadline is Mar 1, 2027. ## Facts | Fact | Value | | --- | --- | | Vendor | [Zendesk API](https://harbyn.com/vendors/zendesk.md) | | Kind | Deprecation | | Severity | high | | Status | In effect | | Announced | Sep 14, 2026 | | Effective | Mar 1, 2027 | | Added to Harbyn | Sep 29, 2026 | | Lead time | 153 days of warning | | Review | Reviewed by a person, extracted by a model | ## Find it in your code ```sh npx harbyn scan ``` This change names no identifier the scanner can match line by line, so the scan tells you whether your repository uses Zendesk API, from its packages and API hosts. Nothing leaves your machine. ## Sources Where this event comes from: the page we read, when we read it, and the hash of that snapshot. - (changelog, fetched 2026-09-29 02:31 UTC, sha256 `7637141853444e440e53413aa12923530e068dbeb3efc8d851fc00421b5ee382`) ## Related changes ### More from Zendesk API - [Zendesk Sell retirement](https://harbyn.com/changes/zendesk/2025-09-09-zendesk-sell-retirement.md) (Retirement, effective Aug 31, 2027) ### Changes at other vendors - [AWS Lambda: Python 3.10 runtime deprecation](https://harbyn.com/changes/aws-lambda/2026-10-08-python-3-10-runtime-deprecation.md) (effective Oct 31, 2026) - [Jira / Atlassian Cloud: Atlassian Analytics dashboard subscriptions being removed](https://harbyn.com/changes/atlassian-jira/2026-08-10-atlassian-analytics-dashboard-subscriptions-being-removed.md) (effective Nov 2, 2026) - [Google Cloud Run and Functions: .NET 8 runtime deprecation](https://harbyn.com/changes/google-cloud/2026-10-08-net-8-runtime-deprecation.md) (effective Nov 10, 2026) - [GitHub: X-GitHub-Stateless-S2S-Token header ignored from 2026-11-30](https://harbyn.com/changes/github/2026-10-02-x-github-stateless-s2s-token-header-ignored-from-2026-11-30.md) (effective Nov 30, 2026) [All upcoming deadlines](https://harbyn.com/deadlines.md)