Inventory Valuation Report

Purpose

Compute the total stock-on-hand value for your WooCommerce catalog by multiplying stock_quantity by regular_price for each product and variation. Groups results by category. Useful for balance sheet reporting, insurance valuation, and capital planning. Read-only — no data is modified.

Prerequisites

• WooCommerce store with REST API enabled
• Consumer Key with Read scope
• Stock management must be enabled (manage_stock: true) per product for accurate results
• Minimum WooCommerce version: 3.5.0

Parameters

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 oauth_consumer_key, oauth_nonce, oauth_signature, oauth_signature_method=HMAC-SHA1, oauth_timestamp, oauth_version=1.0

Never log or output consumer_key or consumer_secret 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 category names

GET /wp-json/wc/v3/products/categories?per_page=100&page=1

Build category ID → name lookup.

Step 2 — Fetch all products with stock

GET /wp-json/wc/v3/products?status=publish&per_page=100&page=1

Extract: id, name, sku, type, stock_quantity, regular_price, sale_price, manage_stock, categories

Step 3 — Fetch variation stock (if include_variations: true)

For each variable product:

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

Extract per variation: id, sku, stock_quantity, regular_price, sale_price, manage_stock

Step 4 — Compute valuation

For each product/variation where manage_stock == true:

inventory_value = stock_quantity × price_field_value

Skip if exclude_zero_stock: true and stock_quantity <= 0.

Step 5 — Aggregate by category and export

API Endpoints Used

GET  /wp-json/wc/v3/products/categories           — category name lookup
GET  /wp-json/wc/v3/products                      — product stock and price data
GET  /wp-json/wc/v3/products/{id}/variations      — variation-level stock

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) < 100: break
  page += 1

Maximum per_page is 100 for most endpoints. The X-WP-Total and X-WP-TotalPages response headers report totals. Always read X-WP-TotalPages on the first request to estimate job size.

Session Tracking

Claude MUST emit the following output at each stage. This is mandatory.

STARTUP:

╔══════════════════════════════════════════╗
║  SKILL: woo-inventory-valuation-report   ║
║  STORE: <store_url>                      ║
║  TIME:  <ISO-8601 UTC>                   ║
║  MODE:  READ-ONLY                        ║
╚══════════════════════════════════════════╝

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

[N/TOTAL] <METHOD> <endpoint> → <result_count> records | params: <key>=<val>

COMPLETION (human format):

╔══════════════════════════════════════════╗
║  COMPLETE: woo-inventory-valuation-report║
║  RECORDS PROCESSED: <n>                  ║
║  OUTPUT: <filename>                      ║
╚══════════════════════════════════════════╝

COMPLETION (json format):

{
  "skill": "woo-inventory-valuation-report",
  "store": "<store_url>",
  "completed_at": "<ISO-8601>",
  "records_processed": <n>,
  "output_file": "<path>",
  "dry_run": false
}

Output Format

CSV filename: woo-inventory-valuation-report_<YYYY-MM-DD>.csv Columns: product_id, variation_id, sku, name, category, stock_quantity, unit_price, inventory_value

Human summary also shows category subtotals and grand total.

Error Handling

Best Practices

• Run at month-end for balance sheet reporting.
• Use price_field: regular_price for replacement cost valuation; sale_price for liquidation value.
• Products with manage_stock: false are excluded — ensure stock management is enabled for your physical inventory.
• Cross-reference grand total against your purchase ledger quarterly.