Title: PepSpectrum Connect Author: moldech Published: August 17, 2026 Last modified: August 17, 2026 --- Search plugins ![](https://ps.w.org/pepspectrum-connect/assets/banner-772x250.png?rev=3651286) ![](https://ps.w.org/pepspectrum-connect/assets/icon-256x256.png?rev=3651286) # PepSpectrum Connect By [moldech](https://profiles.wordpress.org/moldech/) [Download](https://downloads.wordpress.org/plugin/pepspectrum-connect.1.9.0.zip) * [Details](https://wordpress.org/plugins/pepspectrum-connect/#description) * [Reviews](https://wordpress.org/plugins/pepspectrum-connect/#reviews) * [Installation](https://wordpress.org/plugins/pepspectrum-connect/#installation) * [Development](https://wordpress.org/plugins/pepspectrum-connect/#developers) [Support](https://wordpress.org/support/plugin/pepspectrum-connect/) ## Description PepSpectrum Connect links your WooCommerce store to **PepSpectrum**, a price-comparison marketplace. Shoppers compare offers from several stores on one page, then click through to buy on _your_ store — you keep the customer, the payment and the order. You install this plugin, paste the two credentials from your PepSpectrum vendor dashboard, and everything after that is automatic. #### What it does * **Keeps your listings current.** Every published product is sent when you save it, so prices, descriptions and images on the marketplace match your store. * **Keeps stock accurate in real time.** When stock changes — whether you edited it or a customer bought something — the new level is pushed straight away. * **Brings buyers in ready to pay.** A shopper arriving from PepSpectrum lands on your checkout with the right items already in the cart, their details filled in, and your marketplace discount code applied. * **Reports marketplace orders.** Completed, cancelled and refunded orders that came from PepSpectrum are reported back so commission is tracked correctly. Orders from anywhere else are ignored entirely. * **Shares your lab reports automatically.** Upload a Certificate of Analysis PDF to a product the normal way and its link travels with your listing — no field to fill in, and nothing added to your product screen. Everything runs in the background through Action Scheduler, so a sale or an admin save is never held up waiting on a network call. #### Third-party service disclosure **This plugin depends on an external service and is not useful without one.** It is a client for the PepSpectrum marketplace at [www.pepspectrum.com](https://www.pepspectrum.com), operated by PepSpectrum. Using the plugin means store data is transmitted to, and processed by, that service. You need a PepSpectrum vendor account to use it. **Nothing is sent until you connect the plugin.** On a fresh install it makes no outbound requests at all. It begins communicating only after you save an API Key and Secret on WooCommerce PepSpectrum — saving those credentials is the act of consent. Once connected, the plugin sends to `www.pepspectrum.com`: * **When you save a published product** — SKU, name, short description, price, regular and sale price, currency, stock quantity and status, image URLs, category names, the product’s public URL, and the link to a Certificate of Analysis PDF if one is attached to that product. Draft, private and pending products are never sent. Unpublishing, trashing or deleting a product sends only its SKU and a “ no longer listed” flag. * **When stock changes** — SKU, quantity and stock status. * **Once a day** — the same published-product data again, as a full refresh, so the marketplace cannot drift out of date. * **When a PepSpectrum-referred order completes, is cancelled or is refunded** — order totals, discount, shipping and tax amounts, currency, status, your order number, and the marketplace reference for that order. A refund additionally sends the refunded amount and the reason you typed on it. **No customer data is ever sent: no names, email addresses, postal addresses or phone numbers. Orders that did not come from PepSpectrum are never reported. * **With every request** — your site URL and the plugin version, so the service knows which store is calling. The plugin also _receives_ two kinds of signed request from the service: checkout links that carry a buyer to your store with their cart and details, and a request to re-send your catalogue. Both are rejected unless they carry a valid signature made with your API Secret and are within their expiry window. All traffic is signed with HMAC-SHA256 and sent over HTTPS. No data is shared with any other third party. By connecting your store you agree to the PepSpectrum [Terms of Service](https://www.pepspectrum.com/terms) and [Privacy Policy](https://www.pepspectrum.com/privacy). #### Every product needs a SKU The SKU is how the marketplace identifies a product across different stores, so a product saved without one is not synced and will not appear there. On a variable product, **every variation needs its own unique SKU**. WooCommerce reports the parent’s SKU for a variation left blank, which would make the variations overwrite each other into a single listing and break checkout for buyers sent over. The plugin flags both cases in wp-admin so you are never left guessing why a product is missing. ## Installation 1. In WordPress, go to **Plugins Add New**, search for “PepSpectrum Connect”, and click **Install Now**, then **Activate**. (WooCommerce must already be installed and active.) 2. Create a free vendor account at [www.pepspectrum.com](https://www.pepspectrum.com) and register your store. Accounts are reviewed by a person before your listings go public, but you can connect the plugin and sync privately straight away. 3. Open your PepSpectrum vendor dashboard and copy the **API Key** and **API Secret shown there. 4. In WordPress, go to **WooCommerce PepSpectrum**, paste both values, and click** Save settings**. 5. Click **Test connection** to confirm the link works. 6. Click **Sync product catalog** once to send your existing products. After that, syncing is automatic. Make sure every product — and every variation — has its own unique SKU before you run that first sync. ## FAQ ### Do I need a PepSpectrum account? Yes. The plugin is a connector for that marketplace and does nothing on its own. Registering a store is free. See the third-party service disclosure above for exactly what data is shared once you connect. ### Does PepSpectrum take payments, or see my customers? No to both. Shoppers check out on your own store, through your own payment gateway— PepSpectrum never handles the money. Since version 1.6.7 the plugin sends no customer information at all: order reports carry amounts and references only. ### Which products get sent to the marketplace? Every **published** product that has a SKU. Drafts, private and pending products never leave your store. Whether a listing is actually shown to shoppers is a separate switch you control from your PepSpectrum dashboard, not from WordPress. ### Why is one of my products missing from the marketplace? Almost always a missing SKU. Check **WooCommerce PepSpectrum** — it reports how many published products have no SKU, and how many variations are falling back to their parent’s SKU. Both cases are also flagged on the product edit screen. ### Are my orders reported to PepSpectrum? Only orders that PepSpectrum referred. The plugin marks those orders when the buyer arrives, and checks for that mark before reporting anything. Organic orders are never involved. ### How do I share a lab report (COA) for a product? Edit the product, upload the certificate PDF using the **Add Media** button, and save. That is all — the plugin finds it and sends the link with your listing. The file stays on your own server; only its address is shared. For a variable product, upload the PDF to a variation to give that size its own certificate, or to the parent product to cover every variation at once. A PDF uploaded through **Media Add New** is not matched to any product, so it is not found this way. Add its link from your PepSpectrum dashboard instead. ### Will this slow down my store? No. Every call to the marketplace is queued and runs in the background through Action Scheduler (which ships with WooCommerce), so checkout and admin saves are never blocked waiting on the network. ### Where do I see what the plugin is doing? **WooCommerce Status Logs**, source `pepspectrum-connect`. ### Does it work with HPOS and the block checkout? Yes. The plugin declares compatibility with WooCommerce’s High-Performance Order Storage and with the block-based cart and checkout, and uses the WooCommerce CRUD API throughout. ### How do I disconnect? Deactivate the plugin. Your scheduled background sync is cancelled, and nothing further is sent. Deleting the plugin also removes its settings; your products and orders are untouched. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “PepSpectrum Connect” is open source software. The following people have contributed to this plugin. Contributors * [ moldech ](https://profiles.wordpress.org/moldech/) [Translate “PepSpectrum Connect” into your language.](https://translate.wordpress.org/projects/wp-plugins/pepspectrum-connect) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/pepspectrum-connect/), check out the [SVN repository](https://plugins.svn.wordpress.org/pepspectrum-connect/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/pepspectrum-connect/) by [RSS](https://plugins.trac.wordpress.org/log/pepspectrum-connect/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.9.0 * Internal rename: everything the plugin registers or stores in WordPress now uses the `pepsc` prefix (the previous `mpc` prefix was shorter than the four characters the directory guidelines require). Your settings, marketplace order tags, COA links and any queued background work are migrated automatically the first time the updated plugin loads — no action needed. * No functional changes: syncing, checkout links and order reporting behave exactly as before, and the connection to PepSpectrum is uninterrupted. #### 1.8.0 * Lab reports are now found automatically. Upload a Certificate of Analysis PDF to a product the normal way and the plugin sends its link with your listing — no address to copy, no field to fill in. On a store with fifty products that replaces fifty rounds of copy-and-paste with nothing at all. * The four COA fields the plugin used to add to the product and variation edit screens are gone. The plugin no longer adds anything to your product screen. * Variations use their own attached PDF, falling back to the parent product’s — so one certificate uploaded to the parent covers every size. * Testing lab, batch and test date are no longer collected. The certificate itself carries them, and they are on the document a shopper opens. * A COA link entered on your PepSpectrum dashboard now always wins over a discovered PDF, and a sync can no longer erase it. * If you previously filled in the plugin’s COA URL field, that value is still read and keeps working — you do not need to re-enter anything. #### 1.7.0 * Updates now come from the WordPress Plugin Directory. The plugin’s own update checker has been removed, along with the version manifest it fetched from pepspectrum. com — WordPress handles updates like any other directory plugin. * The “WooCommerce required” admin notice is now dismissible, and the plugin declares its WooCommerce dependency through the standard `Requires Plugins` header on WordPress 6.5+. * Full catalogue and stock syncs now read products in pages instead of loading the entire catalogue in one query — large stores no longer risk running out of memory when a sync starts. The SKU scan behind the settings-page warning does the same. * Failed requests to the two public endpoints (checkout handoff, sync trigger) are now logged at most once a minute per failure type, so a flood of malformed requests can no longer fill the log. * Deactivating the plugin now cancels its daily background sync. * Renamed for consistency with the plugin’s name: the plugin folder, text domain, settings-page address and log source are now all `pepspectrum-connect` rather than the original `mp-connect`. Your existing log files stay where they are under the old name; new entries appear under **WooCommerce Status Logs**, source ` pepspectrum-connect`. * Internal: the hub API contract moved out of this readme into the developer documentation. #### 1.6.7 * Privacy: the plugin no longer sends the buyer’s email address — or any other customer data — to PepSpectrum. Order reports now carry amounts, currency, status and order references only. Orders are matched by `mp_order_id` instead, which PepSpectrum already issued when it referred the buyer. * No action needed. Existing installs keep working; the marketplace simply receives one field fewer. #### 1.6.6 * Fix: the “View details” window on the Plugins screen now shows the plugin’s own information. * All plugin links and the update endpoints now use www.pepspectrum.com. #### 1.6.5 * Rebrand: the plugin is now named “PepSpectrum Connect” (author PepSpectrum). The wp-admin menu is WooCommerce PepSpectrum. Folder, log source (mp-connect) and all APIs are unchanged — existing installs update in place. #### 1.6.4 * New: self-hosted automatic updates. (Removed again in 1.7.0, which moves updates to the WordPress Plugin Directory.) #### 1.6.3 * Commission base change: order events now carry the product-level amounts (items_subtotal, discount_total, items_net, shipping_total, tax_total). Commission is booked on items_net — products after discounts, excluding shipping and tax (the affiliate- industry standard) — instead of the order grand total. Refund events carry the refunded product value so reversals follow the same base. #### 1.6.2 * Fix: variation names that already contain the attribute summary are no longer suffixed again — offers arrived as “BPC-157 – 5mg – 5mg” and could not be matched. * Fix: stock changes on a variable _parent_ product are no longer pushed — parents are never offers, so the push only created a phantom SKU stub. #### 1.6.1 * Fix: variations without their own SKU are no longer synced under the SKU they inherit from their parent. Previously every strength of a variable product overwrote a single marketplace offer and its checkout links could not be fulfilled. Such variations are now skipped (with a log warning) until they get a unique SKU. Stock pushes and removals follow the same own-SKU rule. * Fix: catalog batch requests now wait up to 30s instead of 15s. #### 1.6.0 * New: the daily full sync and “Sync product catalog” now send products in batches of up to 100 instead of one request per SKU. A 500-product catalog goes from 500 signed requests to 5 — far less load on the store during a sync. Real-time single-product saves are unchanged. #### 1.5.5 * Fix: variations now report their size, so a 5/10/15mg product no longer pushes three offers with identical names that fail to match. * Fix: variation links now carry the attribute query string, so a buyer arrives with the size they clicked already selected. * New: products that cannot be listed because they have no SKU now say so instead of disappearing silently — a note on the product screen, a warning on save, and a store-wide count on the settings page. * New: variations with no SKU of their own are flagged. #### 1.5.4 * Tweak: the sync-card status is now a single clear sentence per state. #### 1.5.3 * Fix: on stores that require an account, a buyer who registered or logged in mid-handoff was stranded on My Account with the cart silently ready. Registration and login now return the buyer straight to checkout. #### 1.5.2 * Fix: full catalog sync only delivered one product. Action Scheduler’s “unique” flag dedupes by hook name alone, so a burst of per-product jobs silently dropped every job after the first. Dedupe is now per item. #### 1.5.1 * Handoff coupons never discount sale items: codes carried in a marketplace checkout link are enforced as “exclude sale items” for that buyer’s session, so a store sale and the marketplace discount can never stack unexpectedly. #### 1.5.0 * Zero-config connection: vendors only paste their API Key + Secret. * Test/Live mode and the per-feature toggles are removed from the UI. Every sync feature is always on. * Commission rate removed from the plugin entirely — the rate is set per vendor on PepSpectrum and shown in the vendor dashboard. * Coupon sync removed, replaced by a single storewide marketplace discount code registered on the dashboard and auto-applied on cart rebuild. * Sync buttons now show state. #### 1.4.0 * Coupon sync (removed again in 1.5.0). * Certificate of Analysis (COA) fields per product and per variation. * Checkout handoff applies any coupons carried in the signed link. #### 1.3.0 * Thin-connector rework: the plugin is now a pure data pipe. Choosing what appears on the marketplace, and mapping SKUs to comparison pages, moved to the PepSpectrum dashboard. * Every published product syncs automatically; unpublishing sends a withdrawal. * Inbound signed sync trigger, and a daily full-sync safety net. #### 1.2.0 * Marketplace screen in wp-admin with per-row listed toggles, mapping picker and live status. (Removed in 1.3.0.) #### 1.1.0 * Product catalog sync with a per-product “List on marketplace” toggle. #### 1.0.0 * Initial release: linking, stock sync, checkout handoff, order/refund events, HPOS + block-checkout compatible. ## Meta * Version **1.9.0** * Last updated **3 days ago** * Active installations **Fewer than 10** * WordPress version ** 6.0 or higher ** * Tested up to **7.0.4** * PHP version ** 7.4 or higher ** * Tags * [Marketplace](https://wordpress.org/plugins/tags/marketplace/)[price comparison](https://wordpress.org/plugins/tags/price-comparison/) [product-sync](https://wordpress.org/plugins/tags/product-sync/)[stock sync](https://wordpress.org/plugins/tags/stock-sync/) [woocommerce](https://wordpress.org/plugins/tags/woocommerce/) * [Advanced View](https://wordpress.org/plugins/pepspectrum-connect/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/pepspectrum-connect/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/pepspectrum-connect/reviews/) ## Contributors * [ moldech ](https://profiles.wordpress.org/moldech/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/pepspectrum-connect/)