Allegro Marketplace Connector for Shopify

Key Features

Bulk-publish Shopify products to Allegro with per-product category and required-parameter mapping (brand, EAN/GTIN, condition, size)

Two-way inventory sync via Shopify webhooks (inventory_levels/update, products/update) and the Admin GraphQL API, respecting multi-location stock

Two-way price sync with configurable PLN margin, currency conversion, and rounding rules per product or collection

Allegro order import into Shopify as native orders, preserving buyer, line items, shipping method, and notes

Allegro category & parameter mapping UI so each product lands in the correct Allegro taxonomy with all mandatory fields filled

Allegro Smart! fulfillment support — flags and publishes eligible offers so they qualify for the Smart! badge

PLN pricing and Polish VAT handling for compliant tax invoicing

OAuth connection to the Allegro REST API with server-side token refresh and reconnect handling

Offer-state and external Allegro ID tracking stored in Shopify metafields for reliable re-sync and de-duplication

Sync activity log and error surfacing so failed listings (missing EAN, invalid category param) are visible and fixable

Configurable sync direction and conflict rules (e.g. Shopify-as-source-of-truth for stock and price)

Bulk re-listing and offer-end controls to pause, relist, or retire Allegro offers in batches

Built to order, done for you

No DIY setup — a working app, built, installed and supported by ECOSIRE.

You order

Start with a one-time build price. We scope it with you at kickoff.

We build & install

ECOSIRE builds, configures and installs it on your Shopify.

Go live + support

You go live in about 2–4 weeks, with a post-launch support window.

About this Product

Allegro is Poland's dominant marketplace — over 20 million active buyers — yet Shopify has no native Allegro channel and the off-the-shelf options rarely handle Allegro's strict category parameters, PLN pricing, and VAT rules the way Polish and CEE sellers actually need.

The Allegro Marketplace Connector for Shopify is a build-to-order app: ECOSIRE builds it against your store, installs it, and supports it. This is not an instant App Store download. After purchase we scope your catalog, Allegro account, and fulfillment model, then deliver a connector tailored to your products.

What it does. It pushes your Shopify products to Allegro in bulk, mapping each product to the correct Allegro category and required parameters (brand, EAN/GTIN, size, condition). It keeps inventory and price in sync using Shopify Admin GraphQL API reads and webhooks (products/update, inventory_levels/update, orders/create) so a sale on either channel adjusts available stock across your multi-location inventory. Allegro orders are imported into Shopify as native orders — preserving buyer details, line items, and shipping — so fulfillment, invoicing, and reporting stay in one place.

It handles the things that break generic tools: PLN pricing with configurable margin/rounding rules, VAT rate handling for Polish tax invoicing, and Allegro Smart! eligibility so qualifying offers display the Smart! badge. Mapping state and external Allegro offer IDs are stored in Shopify metafields, and the Allegro connection uses OAuth with token refresh handled server-side.

You get a connector that fits your catalog and your accounting — not a one-size-fits-all listing tool. Pricing is a one-time build fee of $299; ongoing Allegro API changes and support are covered under a maintenance arrangement described below.

What you get

A custom Shopify app, built against your store, that connects Shopify to your Allegro seller account via OAuth

Initial Allegro category and parameter mapping configured for your live catalog (or a defined subset agreed at kickoff)

Configured two-way inventory and price sync, including PLN margin/rounding and VAT rules for your tax setup

Allegro order import wired into your Shopify order flow, tested with real or sandbox orders

Installation and connection of the app to your Shopify store and Allegro account by ECOSIRE

A short handover document covering how to add new products, adjust mappings, and read the sync log

A defined support and maintenance arrangement covering Allegro API changes and bug fixes after go-live

Who this is for

Polish Shopify retailer expanding to Allegro

Runs an established Shopify store in Poland and wants to reach Allegro's 20M+ buyers without manually re-keying every product, price, and stock change into a second system.

CEE cross-border seller

Sells across Central & Eastern Europe and treats Allegro as a key acquisition channel, but needs correct category parameters, EAN/GTIN data, and PLN/VAT handling to avoid offer rejections and tax errors.

Operations or e-commerce manager managing dual channels

Owns fulfillment and inventory accuracy across Shopify and Allegro, and needs Allegro orders flowing into Shopify so one team can pick, pack, invoice, and report from a single source of truth.

How Allegro Marketplace Connector for Shopify Compares

Criterion	ECOSIRE	Custom Build	Competitor
Two-way Shopify ↔ Allegro inventory & price sync	Included	Partial support	Partial support
Allegro category & required-parameter mapping configured for your catalog	Included	Partial support	Partial support
PLN pricing rules + Polish VAT handling	Included	Partial support	Partial support
Allegro Smart! eligibility support	Included	Partial support	Partial support
Allegro orders imported as native Shopify orders	Included	Partial support	Included
Instant self-serve install (no build time)	Not included	Not included	Included
Tailored to your exact catalog, mappings, and accounting	Included	Included	Not included
Ongoing maintenance for Allegro API changes included	Included	Partial support	Partial support

Frequently Asked Questions about Allegro Marketplace Connector for Shopify

Is this an instant download from the Shopify App Store?

No. This is a build-to-order app. ECOSIRE builds the connector against your store and Allegro account, installs it, and supports it. After purchase we scope your catalog and configuration, then deliver and install — there is no instant App Store install.

How long until it's live in my store?

Typical delivery is around 2–3 weeks from kickoff, depending on catalog size and how much Allegro category mapping is required. We confirm a firm timeline after the initial scoping call. Larger catalogs or unusual category structures can extend this; we will tell you up front rather than after the fact.

What ongoing support and updates do I get?

Allegro's REST API and category requirements change over time. Your build includes a defined maintenance arrangement covering bug fixes and adapting the connector to Allegro API changes after go-live. We agree the support terms in writing before launch so there are no surprises — this is not a fire-and-forget download.

Does it sync inventory and prices in both directions?

Yes. Stock and price changes propagate between Shopify and Allegro using Shopify webhooks and the Admin GraphQL API. You choose the rules — for example, Shopify as the source of truth for stock — and we configure PLN margin, conversion, and rounding for pricing. Multi-location inventory is respected so available stock reflects all your locations.

Does it handle Allegro categories, PLN pricing, VAT, and Allegro Smart!?

Yes. Each product is mapped to the correct Allegro category with its mandatory parameters (brand, EAN/GTIN, condition). Pricing is published in PLN with your margin and rounding rules, VAT is handled for Polish tax invoicing, and offers eligible for Allegro Smart! are flagged so they can qualify for the Smart! badge.