arnaud92

MerchantStamp Catalog Audit is the AI-readiness layer for WooCommerce catalogs.
It helps merchants audit catalog quality, enrich missing product schema, and publish AI-ready feeds — without replacing their existing SEO or feed plugin.
Unlike traditional feed plugins focused on channel exports, this plugin focuses on catalog completeness and machine readability for modern AI-driven discovery.
<h4>Fully functional, free, and offline-first</h4>
This plugin is 100% functional locally. Every feature listed below runs on your server with no external service required. There is no time limit, no product cap, no locked feature behind a license key.
<ul>
<li>Full ShopScore audit (no product limit)</li>
<li>Field Coverage Analytics</li>
<li>Top Issues panel (the fields with the most missing values, ranked)</li>
<li>Prioritized Recommendations (actions ranked by estimated ShopScore gain)</li>
<li>JSON-LD enrichment on top of Yoast, Rank Math, or native WooCommerce</li>
<li><code>products.jsonld</code> feed (schema.org Product catalog)</li>
<li><code>llms.txt</code> feed (LLM-friendly catalog summary)</li>
<li><code>acp.json</code> feed (Agent Commerce Protocol)</li>
<li><code>agent.json</code> feed (with SHA-256 content-integrity proof)</li>
<li>Scan history archive (60 most recent scans)</li>
<li>Score Trend sparkline</li>
<li>Compare any two scans (delta score, delta critical missing, per-field coverage diff)</li>
<li>Degradation alerts (banner when ShopScore drops or critical-missing rises)</li>
<li>Automatic feed rebuild on product create / update / delete / stock change</li>
<li>WooCommerce admin dashboard</li>
<li>Full HPOS compatibility</li>
</ul>
<h4>Optional external service</h4>
The plugin can optionally connect to the MerchantStamp service for capabilities that genuinely require a centralized backend. The plugin works entirely without it.
What the service adds (Guideline 6 — Serviceware):
<ul>
<li>Centralized multi-site dashboard — manage catalog quality across multiple WooCommerce stores from one place</li>
<li>Cross-site verification key — published at <code>merchantstamp.com/.well-known/keys/<slug></code>, referenced inside <code>agent.json</code> so AI agents can verify the integrity of your published feed against a public key you control</li>
<li>Storefront discovery loader — a small JavaScript snippet (versioned, SRI-protected, opt-in) injected in the footer that helps AI agents find this site’s feeds at scale</li>
<li>Advanced alerting — Slack and email delivery of degradation alerts, beyond the in-admin banner that this plugin shows for free</li>
<li>Push notifications to your MerchantStamp dashboard after each rebuild</li>
</ul>
Pricing for the MerchantStamp service is at <a href="https://merchantstamp.com" rel="nofollow ugc">merchantstamp.com</a>.
<h4>Built to work alongside your stack</h4>
<ul>
<li>Yoast SEO / Yoast WooCommerce SEO</li>
<li>Rank Math / Rank Math PRO</li>
<li>AIOSEO</li>
<li>Google for WooCommerce</li>
<li>Product Feed PRO for WooCommerce</li>
<li>Any WooCommerce-compatible theme</li>
</ul>
If another plugin already outputs valid schema, this plugin does not overwrite it. It fills missing fields only.
<h4>Read-only by design</h4>
This plugin does not rewrite your WooCommerce product catalog. It reads your product data, computes scores, enriches structured output at render time, and generates feed files from existing catalog data.
<h4>External services</h4>
This plugin connects to MerchantStamp services only when the user enters an API key. Without an API key, no external connection is ever made.
When a user enters a MerchantStamp API key, the plugin connects to:
1. MerchantStamp Activation & Push API
<ul>
<li>Endpoint: <code>https://merchantstamp.com/api/webhooks/plugin</code></li>
<li>Purpose: Validate the API key on activation, and report feed-build status after each rebuild so the merchant’s MerchantStamp dashboard stays in sync.</li>
<li>Data sent: site URL, plugin version, WordPress version, WooCommerce version, the merchant’s chosen slug, public feed URLs, total product count, average ShopScore, build duration in milliseconds, and a UTC timestamp.</li>
<li>No personal data, customer data, or order data is ever sent.</li>
<li>Terms of service: https://merchantstamp.com/en/legal</li>
<li>Privacy policy: https://merchantstamp.com/en/privacy</li>
</ul>
2. Optional Storefront Loader Script
<ul>
<li>URL: <code>https://merchantstamp.com/js/silver-loader.v1.0.0.js</code></li>
<li>Purpose: A small JavaScript file injected in the site footer (only when an API key is entered AND the filter <code>msca_inject_loader</code> is true) that helps AI discovery systems find this site’s published feeds.</li>
<li>Source code: https://github.com/arnaud-92/silver-loader</li>
<li>Subresource Integrity: loaded with an SRI hash so the browser refuses to execute any modified copy.</li>
<li>
Opt-out: site owners can disable the loader injection at any time by adding the following filter:
add_filter( ‘msca_inject_loader’, ‘__return_false’ );
</li>
</ul>
<h4>Privacy</h4>
<ul>
<li>Without an API key entered, this plugin sends no data to any external service.</li>
<li>With an API key, the plugin sends only operational metadata listed in the External services section above.</li>
<li>No customer data, order data, email addresses, IP addresses, or other personal information is collected, stored, or transmitted by this plugin.</li>
<li>All generated feed files contain only public product information already published on the merchant’s WooCommerce store.</li>
<li>Plugin settings are stored in the standard WordPress options table; no custom database tables are created.</li>
<li>Scan history and cache are stored under <code>wp-content/uploads/merchantstamp-catalog-audit/private/</code> (created with index.php silencers and <code>.htaccess</code> denial rules).</li>
</ul>

MerchantStamp Catalog Audit for WooCommerce

Make your WooCommerce catalog readable by ChatGPT, Gemini, Claude, and AI shopping agents. Free audit + 4 AI-ready feeds, no limits.

wpmarketingrobot

Michel Jongbloed

AukeJomm

Google Feed Manager for WooCommerce is a free WordPress plugin that creates compliant product feeds for Google Merchant Center. It supports 7 feed types including Primary, Supplemental, Promotions, and Local Inventory feeds. The plugin auto-maps required attributes, schedules automatic updates, and handles UNLIMITED products efficiently. No coding required—generate your first Google Shopping feed in under 5 minutes.
This WooCommerce feed manager gets your products on Google Shopping—fast. Generate a compliant product feed, connect it to Google Merchant Center, and start appearing in shopping feeds where buyers are searching.
No XML. No spreadsheets. No developer.
<h3>The Hidden Cost of a Bad Product Feed</h3>
Every day without a working WooCommerce Google Shopping feed costs you sales. Your competitors are already there.
Here’s what most store owners don’t realize: 15–20% of WooCommerce products get rejected in Google Merchant Center due to small data errors. That means for every €100 in ad budget, €15–20 goes to “invisible” products that never show up. Without a proper Google feed, you’re paying for traffic you’ll never get.
And if you’ve tried creating a product feed manually? You know the pain: 
– Rejected products with cryptic error messages 
– Hours lost reformatting data fields 
– Shopping feeds that break every time you update inventory 
– The sinking feeling when “Disapproved” turns red in Merchant Center
Meanwhile, your competitors keep selling.
<h3>What If Your Google Merchant Feed Just Worked?</h3>
Imagine opening Google Merchant Center and seeing zero errors. Your products approved. Your ads running. Sales coming in while you sleep.
That’s not a fantasy. That’s what happens when your WooCommerce product feed is built right from the start.
We’ve spent years inside Google Merchant Center. We’ve fixed thousands of disapproved feeds. We’ve seen what works—and what doesn’t.
So we built the Google feed manager for WooCommerce we wished existed.
<a href="https://wpmarketingrobot.com/help-center/?utm_source=wp_readme&utm_medium=wp_readmelink&utm_campaign=documentation" rel="nofollow ugc">Documentation</a> | <a href="https://www.youtube.com/@wpmarketingrobot/videos" rel="nofollow ugc">Video Tutorials</a> | <a href="https://wpmarketingrobot.com/help-item/faq/?utm_source=wp_readme&utm_medium=wp_readmelink&utm_campaign=faq" rel="nofollow ugc">FAQ</a> | <a href="https://wpmarketingrobot.com/support/?utm_source=wp_readme&utm_medium=wp_readmelink&utm_campaign=support" rel="nofollow ugc">Support</a>
<h3>See It In Action</h3>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/z7cioNVXvD4?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<h3>3 Steps. 5 Minutes. Done.</h3>
<ol>
<li>Pick your feed type – Primary, Supplemental, Promotions, Local Inventory, or 4 others</li>
<li>Map your data – We auto-fill required fields; you customize what matters</li>
<li>Generate – Copy your feed URL into Merchant Center</li>
</ol>
That’s it. No XML editing. No spreadsheet gymnastics. No developer needed.
<h3>Every Google Feed Type. One Plugin.</h3>
<ul>
<li>Primary Feed – Your main product catalog</li>
<li>Supplemental Feed – Override or add data to existing products</li>
<li>Promotions Feed – Run sales and special offers</li>
<li>Local Inventory Feed – Show in-store availability</li>
<li>Manufacturer Center Feed – Brand-level product data</li>
<li>Dynamic Remarketing Feed – Retarget past visitors</li>
<li>Product Ratings Feed – Display star ratings in ads</li>
</ul>
<h3>Real Store Owners. Real Results.</h3>
<blockquote>
“I started with the free version for Google Shopping. It worked. When I needed more feeds, I upgraded. Support responded in one business day, every time. Reliable plugin, reliable team.” 
 — @fredgerendasy
“This plugin is essential for any shop that wants to be reliably listed by Google. It’s become a critical component of my business strategy.” 
 — @poissonvert
</blockquote>
<h3>Built for Stores That Actually Sell</h3>
Industry research shows that only 5–10% of products in a typical catalog actually generate Shopping traffic. Google calls the rest “zombie products”—items in your feed that get zero impressions. The difference? Attribute-rich product data—what Google calls “Golden Records”—that algorithms can understand, match, and surface to buyers. Early data suggests these complete records see 3–4× more visibility in AI-driven shopping experiences.
Performance Prioritizing 
Rank products automatically based on real WooCommerce sales data. Focus ad spend on items that actually convert. Assign performance tiers (high/mid/low) to Google custom labels and build smarter bidding strategies—no spreadsheets, no guesswork.
Filters that protect your margins 
Exclude out-of-stock items. Hide low-margin products. Cut low-performers from your feed entirely. Only advertise what makes you money.
Scheduled updates 
Your feed refreshes automatically. Merchant Center pulls the latest data. You don’t lift a finger.
Scales with you—unlimited products, unlimited feeds 
10 products or 100,000—same speed, same reliability. Create as many feeds as you need. Large catalogs run without slowing your site. No product caps. No feed limits. Ever.
Plays nice with your stack 
Works with Yoast, RankMath, WooCommerce Brands, Germanized, currency switchers, and more. Premium adds WPML, Polylang, and TranslatePress.
Developer-friendly 
WordPress hooks let you customize any data field. No constraints, full control.
Built to Google’s specs 
Strictly follows Google’s 2026 Merchant Center requirements and CSS guidelines. When Google updates their feed specifications, we update the plugin.
<h3>The Difference Between Free and Pro</h3>
Free includes: 
– All 7 Google feed types 
– Unlimited products per feed 
– Unlimited number of feeds 
– Attribute mapping and edit rules 
– Scheduled auto-updates 
– Product filters
Pro unlocks: 
– Advanced filtering logic 
– Full multilingual support (WPML, Polylang, TranslatePress) 
– Multi-channel: Amazon, eBay, Facebook, Instagram, Pinterest, Etsy
<h3><a href="https://wpmarketingrobot.com/?utm_source=wp_readme&utm_medium=wp_readmelink&utm_campaign=pro_version" rel="nofollow ugc">Upgrade to Pro → More products, more channels, more sales</a></h3>
<h3>External services</h3>
This plugin connects to wpmarketingrobot.com for two optional, admin-only features. All requests use HTTPS. No product, order, or customer data is sent.
1) Content check & featured image 
– Purpose: Check if a new blog/vlog exists and fetch its featured image for the “Feed List” page in wp-admin. 
– Data sent & when: On loading the “Feed List,” a GET request is made without PII. As with any web request, the remote server receives standard metadata (IP, user agent, referrer).
2) Google Shopping Checklist sign-up 
– Purpose: Let an admin opt in to receive the Google Shopping Checklist via email. 
– Data sent & when: Only on form submit: email, first name, last name. Used to deliver the checklist; every email includes an unsubscribe link.
Provider policies (wpmarketingrobot.com): 
– <a href="https://wpmarketingrobot.com/terms/?utm_source=wp_readme&utm_medium=wp_readmelink&utm_campaign=external_services" rel="nofollow ugc">Terms of Service</a> 
– <a href="https://www.wpmarketingrobot.com/privacy-statement/?utm_source=wp_readme&utm_medium=wp_readmelink&utm_campaign=external_services" rel="nofollow ugc">Privacy Policy</a>
Notes: These calls occur only in wp-admin for the features above. If you don’t use them, no form data is transmitted.

WPMR Google Feed Manager for WooCommerce – Sell on Google Merchant Center & Shopping


Easily export your WooCommerce products to shopping channels and marketplaces and drive quality traffic and sales.


Easily export your WooCommerce products

The WooCommerce product feed plugin built for Google. UNLIMITED products, UNLIMITED feeds—completely free. Create Google Merchant feed in 5 minutes—no …

MerchantStamp Catalog Audit for WooCommerce vs WPMR Google Feed Manager for WooCommerce – Sell on Google Merchant Center & Shopping