Woo Duplicate Sku Detector

woo-duplicate-sku-detector

Purpose

Scan all WooCommerce products and variations for duplicate SKU values. Duplicate SKUs cause order processing errors, inventory miscounts, and reporting inconsistencies. Exports a conflict report listing every SKU that appears more than once with the product IDs sharing it. Read-only — no products are modified.

Prerequisites

• WooCommerce store with REST API enabled
• Consumer Key with Read scope
• Minimum WooCommerce version: 3.5.0

Parameters

| Parameter | Type | Required | Default | Description | |-----------|------|----------|---------|-------------| | store_url | string | yes | — | Base URL of the WooCommerce store | | consumer_key | string | yes | — | WooCommerce REST API consumer key (ck_...) | | consumer_secret | string | yes | — | WooCommerce REST API consumer secret (cs_...) | | dry_run | bool | no | false | No effect — read-only skill | | format | string | no | human | Output format: human or json | | include_variations | bool | no | true | Also scan variation SKUs | | include_drafts | bool | no | false | Include draft and private products |

Authentication

WooCommerce uses OAuth 1.0a for HTTP and Basic Auth over HTTPS.

For HTTPS stores (recommended):

Authorization: Basic base64(consumer_key:consumer_secret)

For HTTP stores (development only): Use OAuth 1.0a — include oauthconsumerkey, oauthnonce, oauthsignature, oauthsignaturemethod=HMAC-SHA1, oauthtimestamp, oauthversion=1.0

Never log or output consumerkey or consumersecret values.

See docs/AUTHENTICATION.md for full setup instructions.

Safety

Read-only skill — no mutations are executed. Safe to run at any time.

Workflow Steps

Step 1 — Fetch all products

GET /wp-json/wc/v3/products
  ?status=publish&per_page=100&page=1
  [add status=draft,private if include_drafts: true]

Build a map: sku → [{ product_id, type, name }]

Step 2 — Fetch variation SKUs (if include_variations: true)

For each variable product:

GET /wp-json/wc/v3/products/{id}/variations?per_page=100&page=1

Add to the same SKU map: sku → [{ product_id, variation_id, type: "variation", name }]

Step 3 — Identify duplicates

Filter the SKU map to entries where the list has more than one item and the SKU is non-empty.

Step 4 — Sort by conflict count and export

API Endpoints Used

GET  /wp-json/wc/v3/products                   — all products
GET  /wp-json/wc/v3/products/{id}/variations   — variation SKUs

Pagination Strategy

WooCommerce REST API uses page/per_page pagination (not cursor-based).

Standard pattern:

page = 1
while True:
  response = GET /endpoint?per_page=100&page=page
  process(response)
  if len(response)                       ║
║  TIME:                     ║
║  MODE:  READ-ONLY                        ║
╚══════════════════════════════════════════╝

PER-OPERATION (emit after each API call batch):

[N/TOTAL]   →  records | params: =

COMPLETION (human format):

╔══════════════════════════════════════════╗
║  COMPLETE: woo-duplicate-sku-detector    ║
║  RECORDS PROCESSED:                   ║
║  OUTPUT:                       ║
╚══════════════════════════════════════════╝

COMPLETION (json format):

{
  "skill": "woo-duplicate-sku-detector",
  "store": "",
  "completed_at": "",
  "records_processed": ,
  "output_file": "",
  "dry_run": false
}

Output Format

CSV filename: woo-duplicate-sku-detector_.csv Columns: sku, conflict_count, product_id, variation_id, product_type, product_name, product_status

Error Handling

| Error | Cause | Resolution | |-------|-------|------------| | 401 Unauthorized | Invalid credentials | Verify consumerkey and consumersecret | | 403 Forbidden | Key lacks Read scope | Regenerate with Read scope | | 429 Too Many Requests | Rate limit | Wait 2 seconds and retry |

Best Practices

• Run after every product import to catch duplicates introduced by CSV uploads.
• SKUs that are blank/empty are not flagged as duplicates — only non-empty duplicate values are reported.
• Resolve duplicates by editing the SKU in WooCommerce admin (Products → Edit).

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: navarroido
• Source: navarroido/Woocommerce-skill
• License: MIT

Install and usage instructions live in the source repository linked above.