arnaud92

<p><strong>MerchantStamp Catalog Audit is the AI-readiness layer for WooCommerce catalogs.</strong></p>
<p>It helps merchants audit catalog quality, enrich missing product schema, and publish AI-ready feeds — without replacing their existing SEO or feed plugin.</p>
<p>Unlike traditional feed plugins focused on channel exports, this plugin focuses on <strong>catalog completeness and machine readability</strong> for modern AI-driven discovery.</p>
<h4>Fully functional, free, and offline-first</h4>
<p>This plugin is <strong>100% functional locally</strong>. 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.</p>
<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>
<p>The plugin can <strong>optionally</strong> connect to the MerchantStamp service for capabilities that genuinely require a centralized backend. The plugin works entirely without it.</p>
<p>What the service adds (Guideline 6 — Serviceware):</p>
<ul>
<li><strong>Centralized multi-site dashboard</strong> — manage catalog quality across multiple WooCommerce stores from one place</li>
<li><strong>Cross-site verification key</strong> — 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><strong>Storefront discovery loader</strong> — 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><strong>Advanced alerting</strong> — Slack and email delivery of degradation alerts, beyond the in-admin banner that this plugin shows for free</li>
<li><strong>Push notifications</strong> to your MerchantStamp dashboard after each rebuild</li>
</ul>
<p>Pricing for the MerchantStamp service is at <a href="https://merchantstamp.com" rel="nofollow ugc">merchantstamp.com</a>.</p>
<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>
<p>If another plugin already outputs valid schema, this plugin does <strong>not overwrite it</strong>. It fills missing fields only.</p>
<h4>Read-only by design</h4>
<p>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.</p>
<h4>External services</h4>
<p>This plugin connects to MerchantStamp services <strong>only when the user enters an API key</strong>. Without an API key, no external connection is ever made.</p>
<p>When a user enters a MerchantStamp API key, the plugin connects to:</p>
<p><strong>1. MerchantStamp Activation & Push API</strong></p>
<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>
<p><strong>2. Optional Storefront Loader Script</strong></p>
<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>
<p>Opt-out: site owners can disable the loader injection at any time by adding the following filter:</p>
<p>add_filter( ‘msca_inject_loader’, ‘__return_false’ );</p>
</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 <strong>External services</strong> 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.

Lincoln Islam

CODE REX

RexTheme

Product Feed Manager For WooCommerce – Sell on 200+ Online Marketplaces


The free plugin works and allows configuring and generating feeds, but I can't give it 5 stars because:




Some really basic features (like having product EAN code or brand name in the feeds) are deliberately restricted to the paid version only, even though they would realistically amount to maybe 20 lines of mostly copy-paste code.



Custom XML feeds are quite limited, partly due to existence of the paid version, and partly because some things are just not implemented at all. A common limitation many will likely face is the lack of possibility to configure a feed with non-flat structure of the product element (e.g. with multiple category or image URL elements grouped under a parent element). Basically, custom feeds can only be flat, like root > product > property or root > products > product > property. I have configured XML feeds of 5 types so far, and not one of them could be fully done as a feed of Custom type.



No extension mechanism to add your own custom merchant types is provided. If you can't find a suitable feed template and want to implement one yourself, you end up having to modify the mostly undocumented code of this plugin, meaning you can't benefit from easy automatic updates anymore, unless you hijack that functionality as well.



In my not-really-humble opinion, the source code of this plugin is overly complicated and difficult to grasp. Some classes seem unnecessary, and the shear amount of these classes, as well as their inconsistent naming and dated code style, contributes greatly to the feeling of working with a huge pile of mess. Although I'll admit I have a similar feeling each time I'm asked to do pretty much anything code-wise on a WordPress site, so it's either my personal problem, or a broader issue with the WordPress ecosystem.




EDIT. On the bright side:




A lot of preconfigured feed templates are provided. If they suit your needs, you can start serving your feeds pretty quickly.



The dude supporting this plugin on its support forum (I don't know if he's its author as well) is really friendly, positive and responsive, as can be seen from his comment below this review. I'm giving the plugin the fourth star just for that. :)



The plugin works, and its support is great, but...


Excellent plugin. Ran into a little problem, got a solution one day later. Definitively recommended!


Good plugin and fast support


Great Company Great Plugins, telling you as a developer that has created plugins


Rextheme the best

Generate WooCommerce product feeds for 200+ marketplaces. Sell on Google Shopping, Facebook, Instagram, Amazon, eBay, TikTok and more.

MerchantStamp Catalog Audit for WooCommerce vs Product Feed Manager For WooCommerce – Sell on 200+ Online Marketplaces