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.

Kevin Brent

If you’re looking for a plugin to make data management and syncing for your WordPress websites easier, you’ve come to the right place. 
Our developer-friendly API supports a variety of data sources, including JSON, XML, CSV, Google Sheets, WordPress and WooCommerce websites. And, you can customize every data field, thanks to action and filter hooks already included in the plugin. You can also manipulate the data with conditional logic, create a single data string from multiple data fields, and much, much, more.
How does it work?
The WP Data Sync API is easy to set up and maintain. Map your data source with the data keys from your website and you are ready to go. If you need help mapping your data source, we have support experts available to help.
Import data into your website from almost any data source. Users, posts, pages, products, or other custom post types. Once the data is set in your website, our API will keep the data up to date with the changes in your data feed. This can all be done without writing a single line of code.
Data Source Types 
☑ JSON 
☑ XML 
☑ CSV 
☑ FTP 
☑ Webhook 
☑ WordPress 
☑ WooCommerce 
☑ Google Sheets 
☑ Google Forms
What if I want to know more?
Here are a variety of links that we’ve found helpful in explaining our plugin and how to get started:
<a href="https://wpdatasync.com/?affid=admin" title="WP Data Sync" rel="nofollow ugc">WP Data Sync</a> 
<a href="https://wpdatasync.com/blog/?affid=admin" title="WP Data Sync Blog" rel="nofollow ugc">WP Data Sync Blog</a> 
<a href="https://wpdatasync.com/documentation-type/getting-started/?affid=admin" title="Developer Documentation - Getting Started" rel="nofollow ugc">Developer Documentation – Getting Started</a> 
<a href="https://wpdatasync.com/documentation-type/actions/?affid=admin" title="Developer Documentation - Actions" rel="nofollow ugc">Developer Documentation – Actions</a> 
<a href="https://wpdatasync.com/documentation-type/filters/?affid=admin" title="Developer Documentation - Filters" rel="nofollow ugc">Developer Documentation – Filters</a>

WP Data Sync

Sync data from almost any data source to your WordPress or WooCommerce website.

MerchantStamp Catalog Audit for WooCommerce vs WP Data Sync