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Marketplace Configurations

Connecting to Allegro

Connect your Allegro seller account to Market Sync by logging in with Allegro and granting access. No API credentials needed.

Thomas Lang
Written by Thomas Lang
Updated November 10, 2026

You don’t need to create API credentials in the Allegro developer portal: you simply log in with your Allegro seller account from Market Sync.

Step 1 - Add the connection

Go to Connections in the app menu, click Add marketplace and choose Allegro from the list of marketplaces (you can use the search field to find it quickly). Then click Connect Allegro.

Choose Allegro as marketplace

Step 2 - Start the authorization

The Add Allegro Connection window opens. Click Start Authorization. You will be sent to Allegro to log in.

Add Allegro Connection window

Step 3 - Log in to Allegro

Log in with the email address (or login) and password of your Allegro seller account.

Step 4 - Allow access

Review the permissions Market Sync requests and confirm to grant access to your account.

You are sent back to Market Sync and the connection is created.

Please note

After adding the connection, the app imports your offers from Allegro and matches them with your Shopify products using the matching method set on the connection (EAN to Shopify barcode, or SKU). Once the products are successfully linked, the orders will be imported.

Settings such as the order number prefix, order tags and stock locations can be changed afterwards in the settings of the connection.

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