Open Mercato + Allegro
Direct integration with Allegro REST API, no middlemen
Allegro is the largest marketplace in Poland — for many companies 30-70% of B2C and B2B sales. Manually handling hundreds of orders per day is physically impossible. Open Mercato integration with Allegro via official REST API automates the entire process — from listings to invoicing.
The integration is direct (no BaseLinker/Subiekt middleman) — eliminating delays, extra tool costs and points of failure.
What direct Allegro integration provides
- Orders in Open Mercato within 1-3 seconds of finalisation on Allegro
- Stock levels synced back without delays
- Programmatic product listing — thousands of offers without manual work
- Allegro Smart!, Allegro Pay, Allegro Ads fully supported
- Automatic e-invoicing, no manual tax ID re-entry
- Per-offer analytics — see which products earn vs lose
Two-way data flow
Allegro → Open Mercato
Orders, buyer data, payment status, Smart! shipping data
Open Mercato → Allegro
Offers (create/update/end), stock, price, fulfilment status, tracking number
How integration deployment looks
Five stages — from the first conversation to a working production integration.
- 01
Allegro Developer app registration
Create app, generate API keys, set access scopes
- 02
Category and parameter mapping
Allegro categories are very detailed — we map them to Open Mercato categories, define required parameters
- 03
Pilot listing (10-50 products)
List a pilot batch of offers, verify display correctness, parameter validation
- 04
Full listing + stock sync
Expand to full catalogue, enable real-time stock sync
- 05
Order and invoicing automation
Orders automatically generate invoices, courier labels, customer notifications
Allegro integration scenarios
Electronics shop with 2000+ offers
Programmatic listing, daily price and stock updates, automated Smart! order handling
Manufacturer expanding sales channels
Open Mercato stays source-of-truth, Allegro adds B2C channel without changing warehouse operations
B2B wholesaler + occasional B2C sales
B2B portal in Open Mercato for regular clients, Allegro for 'occasional' buyers from surplus margin
Integration cost
Standard Open Mercato - Allegro integration: EUR 2,800 - 7,000 net, 2-4 week setup. Price depends on offer count, categories and specific requirements (e.g. Allegro Ads, Pay). Includes configuration, pilot listing, testing, documentation, 30-day support.
Frequently asked questions
Do I need Allegro Pro/Business account?
Allegro REST API is available to all seller accounts. For advanced features (Allegro Ads API, analytical reports) a Pro/Business account is needed.
Can I use BaseLinker alongside direct integration?
Yes, but rarely makes sense. Direct integration is faster and cheaper long-term. We add BaseLinker when you need consolidation of 5+ channels other than Allegro.
How does Allegro Smart! work?
Smart! automatically sets shipping parameters (packing time, courier, label). Open Mercato passes tracking number to Allegro, Allegro updates customer status. Full automation.
What are Allegro API limits?
Standard 9,000 requests/hour. For demanding apps you can request increase from Allegro. Open Mercato implements caching and batching to avoid limits.