Sell your CS-Cart or Multi-Vendor catalog on Allegro: mapping, price rules, EAN matching, stock and price sync, order import and returns with your own Allegro application.
Tested on 2 buildsUpdated Nov 6, 2026Version 1.0.0CS-Cart, Multi-Vendor 4.17.2 – 4.21.x No core file edits
Built for
Allegro Marketplace Connector: Create offers by EAN, sync stock and price and import orders and returns from your own Allegro seller account1 of 8
What it does
Allegro is the largest online marketplace in Poland and is also used in Czechia, Slovakia and Hungary. If you run a CS-Cart or Multi-Vendor store and want Allegro as an additional sales channel, this add-on connects your own Allegro seller account and application to your shop. It works with allegro-pl, allegro-cz, allegro-sk and allegro-hu.
How it works
Register your own Allegro application, enter its client ID and secret and authorize it with a code in a few clicks; test in the Allegro sandbox first. Map categories and parameters, set markup and stock buffer. The sync creates offers, reads their validation result and pushes stock and price. Orders are imported once, shipments add the tracking number, returns can be accepted with a refund. Failed jobs retry automatically.
Features
Your own Allegro application: device code or browser sign-in, tokens refreshed automatically and stored encrypted
Sandbox and live mode, one-click connection test
Category and parameter mapping from the Allegro category tree, with a markup and a brand per category
Offers matched to the Allegro catalogue by EAN, images uploaded to Allegro, a readable reason per refused offer
Stock and price as batch commands with the result read back per offer, price endings and a stock buffer
Order import without duplicates: buyer, delivery address or pickup point, invoice address and tax ID, prices as sold
Tracking numbers, order status follow, cancellation with refund, returns accepted with a payment refund
Allegro Poland, Czechia, Slovakia and Hungary with the matching currency
Job queue with automatic retries and a log with filters and CSV export
Multi-Vendor: one marketplace account or one account per vendor
What you get
Package
kv_allegro-1.0.0.zip, installed through Add-ons → Manage add-ons
Updates & support
12 months included. Download new versions from your account and install them in Add-ons → Manage add-ons or the Upgrade Center.
License
1 production installation. Staging, dev and localhost are free and unlimited. The add-on keeps working after the update period ends. How licensing works
Compatibility
We list only the builds we install and test on. “Tested” means the full test plan was run on that build; “Supported” means the build is inside the supported range and uses the same hooks.
CS-Cart version and edition compatibility
CS-Cart version
CS-Cart
CS-Cart Ultimate
Multi-Vendor
Multi-Vendor Ultimate
4.22 and later
Testing next
Testing next
Testing next
Testing next
4.21.2
Supported
Supported
Supported
Supported
4.20.x
Supported
Supported
Supported
Supported
4.19.x
Supported
Supported
Supported
Supported
4.18.x
Supported
Supported
Supported
Supported
4.17.2
Supported
Supported
Tested
Supported
Before 4.17.2
Not supported
Not supported
Not supported
Not supported
Last tested build: Multi-Vendor 4.17.2, Nov 6, 2026Tested on: Multi-Vendor 4.17.2
Requirements
Platform
CS-Cart and Multi-Vendor 4.17.2 or later (4.21.x supported)
Requirement
Administrator access to the store's admin panel
Requirement
An Allegro seller account and your own Allegro application (client ID and client secret) registered in the Allegro developer console (apps.developer.allegro.pl; the sandbox has its own console and its own accounts)
Requirement
In the Allegro seller settings: a delivery price list, a return policy and an implied warranty (their IDs are entered on the Connection page; offers cannot be published without them)
Requirement
Products with a valid EAN (GTIN) as the barcode and images that are reachable from the internet (Allegro downloads them)
Requirement
A public https address for your store if you use the browser sign-in (the redirect address must be registered with your application)
Requirement
A cron job on your server (see step 6)
Core changes
None. Hooks and template overrides only
1.0.0
Nov 6, 2026
Latest
Added 9
Initial release on the Marketplace Hub.
Your own Allegro application: client ID and secret stored encrypted, device code and browser sign-in (authorization code) flows, access token refreshed automatically with the rotating refresh token, sandbox and live mode, connection test.
Category tree crawl and category and parameter mapping, price rules, stock buffer, offers created from mapped products matched by EAN (images uploaded to Allegro, product and offer parameters split), validation result and operation status read back per product.
Stock and price as batch commands (one command per distinct value) with the result per offer.
Order import from checkout forms (buyer, delivery address or pickup point, invoice address and tax ID, prices as sold), fulfillment status follow, tracking number and Sent, cancellation with refund.
Customer returns import and acceptance with an idempotent payment refund.
Allegro Poland, Czechia, Slovakia and Hungary with matching currency and offer language.
Job queue with retries and back-off, cron (command line and secret address), log viewer with CSV export.
Multi-Vendor: marketplace owner mode or one Allegro account per vendor.
Tested on Multi-Vendor 4.17.2. First release.
Do I need my own Allegro application?
Yes. You register an application in the Allegro developer console and enter its client ID and secret on the Connection page. The add-on never uses a shared key.
Why is a barcode required?
Allegro builds offers on products of its catalogue, identified by GTIN (EAN). The barcode of the mapped product is the EAN sent with the offer and also its external ID, which is how stock, price and orders are matched back to your products.
Can I use the sandbox?
Yes: choose Test mode and enter the credentials of a sandbox application. The sandbox is a separate Allegro site with its own accounts and data.
Which Allegro sites are supported?
allegro-pl, allegro-cz, allegro-sk and allegro-hu: pick one per account on the Connection page. The currency and offer language follow it.
What happens when an order is cancelled at Allegro?
The status mapping changes the CS-Cart order (default: Canceled). Stock handling follows your CS-Cart status settings.
Does it send invoices?
No. Allegro has no invoice status for sellers; the add-on imports the buyer's invoice data (company name, tax ID, address) into the CS-Cart order.
Does it need a webhook?
No. Allegro offers none to sellers; the add-on reads orders and returns on every sync.
Is it endorsed by Allegro?
No. It uses the public Allegro REST API under your own account.
Add a released add-on to this order and save 15% on it. It uses the same edition and store domain.
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