---
title: "WooCommerce Proof-of-concept product and coupon API removed: 2026-10-07 | Harbyn"
description: "WooCommerce Proof-of-concept product and coupon API removed, effective Oct 7, 2026."
canonical: "https://harbyn.com/changes/woocommerce/2026-09-28-the-experimental-woocommerce-dual-api-is-now-a-plugin-2"
last-updated: 2026-10-09
---

# WooCommerce Proof-of-concept product and coupon API removed

Markdown version of <https://harbyn.com/changes/woocommerce/2026-09-28-the-experimental-woocommerce-dual-api-is-now-a-plugin-2>.

Breaking change - WooCommerce. medium severity. In effect. History: recorded after the fact.

The built-in proof-of-concept API for products and coupons, available in WooCommerce 10.9 through 11.1, is removed in WooCommerce 11.2. The WooCommerce Dual API plugin does not restore those endpoints.

The deadline passed on Oct 7, 2026.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [WooCommerce](https://harbyn.com/vendors/woocommerce.md) |
| Kind | Breaking change |
| Severity | medium |
| Status | In effect |
| Announced | Sep 28, 2026 |
| Effective | Oct 7, 2026 |
| Added to Harbyn | Oct 9, 2026 |
| Lead time | Recorded after the fact: added 2 days after the deadline |
| Vendor page | <https://developer.woocommerce.com/2026/09/28/experimental-dual-api-plugin/> |
| 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 WooCommerce, 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.

- <https://developer.woocommerce.com/feed/> (changelog, fetched 2026-10-09 06:16 UTC, sha256 `fb508ec53d4bf81336d7dc6c01c4348fc83d81fbced4606454ba10f6717a026d`)

## Related changes

### More from WooCommerce

- [Experimental Dual API engine removed from WooCommerce core](https://harbyn.com/changes/woocommerce/2026-09-28-the-experimental-woocommerce-dual-api-is-now-a-plugin.md) (Breaking change, effective Oct 7, 2026)
- [WooCommerce 11.6 will require PHP 8.1 or newer](https://harbyn.com/changes/woocommerce/2026-09-29-new-requirement-for-woocommerce-11-6-php-8-1.md) (Breaking change, effective Feb 2027)
- [Product CSV importer matching and cleanup changes](https://harbyn.com/changes/woocommerce/2026-09-21-woocommerce-11-2-0-pre-release-notes-4.md) (Behavior change, effective Oct 7, 2026)
- [PhotoSwipe error messages no longer substitute failed image URLs](https://harbyn.com/changes/woocommerce/2026-09-21-woocommerce-11-2-0-pre-release-notes-5.md) (Behavior change, effective Oct 7, 2026)

### Changes at other vendors

- [Amazon Selling Partner API: October listing attribute usage and enumeration value updates](https://harbyn.com/changes/amazon-sp-api/2026-10-14-sp-api-updates-new-listings-items-api-ivp-values-in-eu5-jp-and-ca-stores-oct-2.md) (effective Oct 26, 2026)
- [Supabase: four CBC-mode TLS 1.2 cipher suites will be removed from project HTTP APIs](https://harbyn.com/changes/supabase/2026-10-12-an-outdated-subset-of-tls-1-2-ciphers-will-be-disabled-on-project-http-apis.md) (effective Nov 10, 2026)
- [Google Workspace APIs: OAuth clients must be marked as agentic to call Google Workspace MCP servers](https://harbyn.com/changes/google-workspace/2026-10-12-oauth-clients-must-be-marked-as-agentic-to-call-google-workspace-mcp-servers.md) (effective Nov 11, 2026)
- [Bitbucket Cloud API: Git Credential Manager upgrade required for OAuth 2.0 Git authentication](https://harbyn.com/changes/bitbucket/2026-10-13-git-credential-manager-upgrade-required-for-oauth-2-0-git-authentication.md) (effective Nov 30, 2026)

[All upcoming deadlines](https://harbyn.com/deadlines.md)