W3S API Extension for Woocommerce

Apraksts

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.

Endpoints Documentation

Product Categories

• Add a single category
  • Type: HTTP request
  • Endpoint: `/wp-json/wc/v3/products/{product_id}/categories/{identifier}`
  • Methods: POST, PUT, PATCH
  • 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
• Remove a single category
  • Type: HTTP request
  • Endpoint: `/wp-json/wc/v3/products/{product_id}/categories/{identifier}`
  • Methods: DELETE
  • 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
• Batch add categories
  • Type: HTTP request
  • Endpoint: `/wp-json/wc/v3/products/{product_id}/categories`
  • Methods: POST, PUT, PATCH
  • 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″]}’
• Batch delete categories
  • Type: HTTP request
  • Endpoint: `/wp-json/wc/v3/products/{product_id}/categories`
  • Methods: DELETE
  • 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″]}’

Extra notes

• The single category endpoint doesn’t allow slug with characters anything other than latin & numbers [a-z0-9]
• Strings that include only numbers will be parsed as IDs and not as Slugs