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Enhances your store’s REST API by adding powerful, flexible endpoints. 
Stay tuned more are coming!
Add or Remove a Single Category
Easily append or remove one category at a time—by numeric ID or human-friendly slug—using simple POST/PUT/PATCH or DELETE requests to 
 /wp-json/wc/v3/products/{product_id}/categories/{identifier}
Batch Manage Multiple Categories
In a single call, add or remove multiple categories at once via JSON payloads to 
 /wp-json/wc/v3/products/{product_id}/categories 
Supply an array of IDs or slugs under the “categories” key to update your product’s category list in bulk.
Automatic Slug Resolution 
Pass slugs like “summer-collection” and the plugin will resolve them to the correct WooCommerce term IDs on the fly—no extra lookups required.
Non-Destructive Updates 
Neither endpoint touches other product data. Categories are merged or pruned transparently without overwriting prices, stock, attributes, or any other fields.
Built-In Validation & Security
Sanitization of all inputs (IDs and slugs) to guard against bad data.
Permission checks ensure only users with the edit_products capability (Shop Manager, Admin) can modify categories.
Clear, standardized error codes (w3s_api_extension_invalid_product and w3s_api_extension_invalid_product_category) for consistent API responses.
W3S API Extension for WooCommerce installs alongside the core WooCommerce REST API, requires no additional configuration, and works out of the box.
<h3>Endpoints Documentation</h3>
Product Categories
<ul>
<li>
 Add a single category
<ul>
<li>Type: HTTP request</li>
<li>Endpoint: `/wp-json/wc/v3/products/{product_id}/categories/{identifier}`</li>
<li>Methods: POST, PUT, PATCH</li>
<li>Examples: 
 curl -X PUT https://example.com/wp-json/wc/v3/products/125/categories/18 \ 
 -u consumer_key:consumer_secret 
 curl -X PUT https://example.com/wp-json/wc/v3/products/125/categories/my-category \ 
 -u consumer_key:consumer_secret
 </li>
</ul>
</li>
<li>
 Remove a single category
<ul>
<li>Type: HTTP request</li>
<li>Endpoint: `/wp-json/wc/v3/products/{product_id}/categories/{identifier}`</li>
<li>Methods: DELETE</li>
<li>Examples: 
 curl -X DELETE https://example.com/wp-json/wc/v3/products/125/categories/18 \ 
 -u consumer_key:consumer_secret 
 curl -X DELETE https://example.com/wp-json/wc/v3/products/125/categories/my-category \ 
 -u consumer_key:consumer_secret
 </li>
</ul>
</li>
<li>
 Batch add categories
<ul>
<li>Type: HTTP request</li>
<li>Endpoint: `/wp-json/wc/v3/products/{product_id}/categories`</li>
<li>Methods: POST, PUT, PATCH</li>
<li>Example: 
 curl -X PUT https://example.com/wp-json/wc/v3/products/125/categories \ 
 -u consumer_key:consumer_secret \ 
 -H “Content-Type: application/json” \ 
 -d ‘{“categories”: [1,”my-category”,3,”my-category-1″]}’
 </li>
</ul>
</li>
<li>
 Batch delete categories
<ul>
<li>Type: HTTP request</li>
<li>Endpoint: `/wp-json/wc/v3/products/{product_id}/categories`</li>
<li>Methods: DELETE</li>
<li>Example: 
 curl -X DELETE https://example.com/wp-json/wc/v3/products/125/categories \ 
 -u consumer_key:consumer_secret \ 
 -H “Content-Type: application/json” \ 
 -d ‘{“categories”: [1,”my-category”,3,”my-category-1″]}’
 </li>
</ul>
</li>
</ul>
Extra notes
<ul>
<li> The single category endpoint doesn’t allow slug with characters anything other than latin & numbers [a-z0-9] </li>
<li> Strings that include only numbers will be parsed as IDs and not as Slugs</li>
</ul>

W3S API Extension for Woocommerce

Enhances your store’s REST API by adding powerful, flexible endpoints. Stay tuned more Endpoints are coming!

Sébastien Dumont

Sebs Studio

Sometimes your products are not quiet ready but you still wish to show your customers what you will be selling next. This small extension enables you to do just that by displaying a message to the customers “Coming Soon”.
This only works if the stock status is set to “Out of Stock” or the stock level of the product is ZERO.
You can if you wish use a custom message that is unique per product. They don’t all have to say the same.
<h4>Documentation</h4>
Documentation, for this plugin, can be found at the GitHub repository <a href="https://github.com/Sebs-Studio/WooCommerce-Coming-Soon/wiki" rel="nofollow ugc">Wiki</a>.
<h4>Contributing and reporting bugs</h4>
You can contribute code to this plugin via GitHub: https://github.com/Sebs-Studio/WooCommerce-Coming-Soon/blob/master/CONTRIBUTING.md and localizations via Transifex: https://www.transifex.com/projects/p/woocommerce-coming-soon/
<h4>Support</h4>
Use the WordPress.org forums for <a href="https://wordpress.org/support/plugin/woocommerce-coming-soon" rel="ugc">community support</a>. If you spot a bug, you can of course log it on <a href="https://github.com/Sebs-Studio/WooCommerce-Coming-Soon/issues" rel="nofollow ugc">Github</a> instead where I can act upon it more efficiently.
Please consider making a <a href="http://www.sebastiendumont.com/donation/" rel="nofollow ugc">donation</a> or <a href="https://wordpress.org/support/view/plugin-reviews/woocommerce-coming-soon?rate=5#postform" rel="ugc">write a review</a>.
More information
<ul>
<li>Other <a href="https://profiles.wordpress.org/sebsstudio/" rel="nofollow ugc">WordPress plugins</a> by <a href="http://www.sebs-studio.com/" rel="nofollow ugc">Sebs Studio</a></li>
<li>Contact Sebastien on Twitter: <a href="http://twitter.com/sebsstudio" rel="nofollow ugc">@sebsstudio</a></li>
<li>If you’re a developer yourself, follow or contribute to the <a href="https://github.com/Sebs-Studio/WooCommerce-Coming-Soon" rel="nofollow ugc">WooCommerce Coming Soon plugin on GitHub</a></li>
</ul>

WooCommerce Coming Soon

Enables you to display a message to customers saying the product is "Coming Soon" rather than "Out of Stock".

W3S API Extension for Woocommerce vs WooCommerce Coming Soon