Integration · E-commerce

Allegro API integration

The Allegro REST API lets you connect your marketplace sales with the rest of the company — no manual copy-pasting of offers, stock and orders. We design, implement and maintain the integration.

What you can integrate with Allegro

Offers and pricing

Bulk listing, price and parameter updates straight from your system or a file.

Stock levels

Real-time sync so you don't sell goods that are no longer on the shelf.

Orders

Automatic order pull into your warehouse, ERP or fulfillment system.

Invoices and documents

Generating and attaching invoices to orders, aligned with Allegro and accounting rules.

Messages and support

Pulling buyer messages into a single panel or a ticketing system.

Shipping statuses

Updating statuses and tracking numbers on Allegro directly from your courier system.

How we do it

We start with a map: which data flows where, and in which direction, between Allegro and your systems.

We build on the official Allegro REST API with correct OAuth authorization, rate-limit handling and retries on errors.

Data passes through a validation layer so a marketplace-side error can't corrupt your warehouse. All with monitoring and alerts.

Who it makes sense for

Sellers with many offers who update prices and stock by hand and lose hours doing it.

Companies selling across several channels that need one source of truth for stock and orders.

Those who want to connect Allegro with a custom system, warehouse or process automation.

Frequently asked questions

How much does an Allegro API integration cost?

It's flexible and depends on the sync scope and number of accounts — most rollouts land between a few and a dozen-or-so thousand złoty. Fixed-price quote after an audit, and with a large number of offers it usually pays back within a few months.

Will it work with my current system?

Yes, if it has an API or a database we can connect to. We integrate Allegro with warehouses, ERPs, custom software and n8n automations.

Does stock update in real time?

Yes. We sync stock live or at short intervals to reduce the risk of selling out-of-stock goods. We tune the frequency to your volume.

What about Allegro API limits and changes?

We handle request limits, retries and error logging. When Allegro changes the API, we update the integration under support so it keeps running without downtime.

Selling on Allegro and losing time on manual work?

Start with a free call. In 30 minutes we'll figure out what's worth integrating and how long it takes.

See also