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Allegro integration

Allegro listings and orders – in one place

Orders from Allegro, the Polish online marketplace, arrive in your shared order list, and stock, prices, titles, descriptions and photos go out to your listings. Before sending, the system checks what Allegro will ask for.

Connect Allegro for free How it works

14 days free · no card required · no developer needed

orders, listings, stock and prices
allegro.pl
new and changed orders
Every 2 hours
stock and price, when you save the product
Instantly
changes to title, description and photos
Within 5 min

01 Connecting

How do I connect Allegro?

In the settings you enter your Allegro app's Client ID, Client Secret and access token (refresh token). After that the system renews access itself. The Allegro channel is created with Polish as its language and złoty as its currency.

  • You choose the date to import orders from. Older orders are not brought over
  • Category mappings, shipping rate tables and manufacturer safety details are set in the same window

02 Orders

How do orders arrive from Allegro?

By themselves, every two hours, into the same order list as your other channels. If you need them sooner, one button fetches them.

  • When an Allegro parcel is sent or collected, the order becomes shipped in the system
  • Each time, purchases from the last 14 days are also read again, because Allegro does not always mark a changed shipping status
  • A canceled order is not created, and one that already exists is marked canceled
  • Buyer and company details for the invoice come with the order, and VAT is calculated at the rate Allegro gives

03 Stock and prices

How are stock and prices updated on Allegro?

When you save a product, a changed stock level, price and delivery time go to Allegro straight away, in one update. Stock that changes because of orders is sent every hour.

  • When stock drops below zero, Allegro is sent 0
  • Delivery days are rounded up to the nearest value Allegro allows
  • If Allegro rejects another field in the update, stock and price are still sent, and the history shows a warning
  • A listing is matched to its product by listing ID or product code

04 Listings

How does a product become an Allegro listing?

A product without a listing gets a new one: with its Allegro category, parameters, photos and manufacturer safety details. It is created as a draft unless you ticked “publish straight away”. Then the listing is published once the product has stock.

  • Changes to title, description and photos are sent to Allegro within 5 minutes
  • AI translates the title and description into Polish if a Google AI key is entered in the settings. If a translation fails, the listing waits and is not sent in Lithuanian
  • If Allegro's catalog already has a product with the same EAN, the new listing is linked to it
  • Before creating one, the system checks whether the listing already exists, so no duplicate appears
  • The description is restructured the way Allegro allows: headings, paragraphs and lists

05 Checks

What is checked before a product goes to Allegro?

Before contacting Allegro, the system checks the price, photos, title length and the EAN check digit, and reports every problem at once.

  • The system looks for values for a category's required fields in the product title and attributes, but only suggests them – you approve
  • If a resend will not fix an error, the system does not repeat it until you change the product
  • When Allegro rejects a title or description, AI prepares a Polish text for you to approve in the approval list
  • For categories without a shipping rate table, the system suggests one based on similar products
  • Allegro's category tree and required fields are refreshed every week
What AI does and does not do

06 EAN check

Does the listing's EAN match your product?

Every morning the system compares the EAN of each linked Allegro listing with your product's barcode. If they differ, it shows a warning and names the product of yours that code belongs to.

  • The fix is made in the Allegro seller panel: the system does not rewrite Allegro's shared catalog
  • You can also check straight away with a button

07 Linking

Already selling on Allegro? Your existing listings are linked

The system offers to link your Allegro listings to products by EAN, product code or title. You confirm each link.

  • After linking, Allegro's stock does not change until you confirm the system's stock
  • The listing's title, price, description and photos are kept as Allegro values, so linking sends nothing to Allegro
  • Whatever your product lacks, such as an EAN or the manufacturer, the system offers to fill in from the listing
  • From an unlinked listing you can create a new product or a variant of an existing one

Already selling on Allegro? Connect and see your listings in the system

Linking does not change Allegro's stock until you confirm. The system is ready within a few minutes.

Connect Allegro for free

What the system does not do with Allegro

So you know in advance what stays in the Allegro seller panel.

  • It does not send the tracking number or shipping status to Allegro
  • It does not change Allegro prices by itself and prepares no price suggestions there
  • Buyer messages, returns and disputes stay in Allegro
  • It does not change Allegro advertising, promotions or Allegro Smart settings
  • It does not relist expired listings by itself
  • One Allegro account can be connected
  • On other Allegro marketplaces (.cz, .sk, .hu) it only shows where a listing is visible; it sends no prices there

All integrations

Connect Allegro

Sign up, then enter your Allegro app details in your system's settings.

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Have a question? Write to us or info@prekio.com