Shopify supplier and inventory integration

When a custom integration is worth it

Most stores start with spreadsheets and an import app. That works until the catalog or the supplier list grows. A custom integration is worth discussing when:

• Your team reconciles several supplier files by hand, each with its own columns, codes and stock rules.
• A short or broken supplier file has zeroed your stock, or you no longer trust the available quantities.
• Imports create duplicate products because supplier codes don’t match what is already listed.
• Prices drift below cost when a supplier changes theirs, and nobody notices until an order arrives.
• Supplier orders are still placed by hand from Shopify orders.

If an existing app already handles your feeds, matching and approvals, keep it. My guide to choosing a supplier sync app or a custom integration has a worksheet for testing that before you pay for development.

What I build

• Supplier feed import. API and spreadsheet feeds are normalized into one format and matched to your live products by barcode. New products wait in a review queue instead of going straight to the store. See how barcode matching gets reviewed.
• Stock sync with holds. Stock updates run on a schedule. When a feed arrives short or broken, removals are held for review instead of marking a large part of the catalog out of stock. The supplier feed safeguards guide shows what to test.
• Pricing safeguards. A cost-based minimum price per supplier, with suspicious market data flagged instead of trusted. The repricing cost-floor checklist covers the rules.
• Supplier ordering. Paid orders become consolidated supplier purchase orders. When a supplier runs out of a line, it is matched by barcode against your other suppliers.
• Least-cost sourcing. When several suppliers carry the same barcode, each variant can route to the cheapest supplier that has it in stock.
• Product feeds. Google Merchant and price-comparison feeds built from live stock and prices.

Most projects need only part of this. We start with the step your team spends the most time correcting.

Built so a bad file can’t break your store

Supplier data is messy, and automation that trusts it will eventually write something wrong to a live store. The safety rules come first:

• Every import, stock sync and price change produces a plan you can review before anything is written.
• Live writes stay switched off until they are explicitly enabled, and risky actions need a typed confirmation.
• Bulk updates run as paced background jobs within Shopify’s API limits.
• Every action is logged, so an interrupted job resumes instead of creating duplicates.

The work this is based on

BC Supply Ops is the operations platform I built for BeautyCorner.gr, a Shopify store with 70,000+ products and seven suppliers: three connected by API and four that send spreadsheets. Its reviewed import has created 23,924 products on Shopify, and its latest minimum-price audit checked 70,418 variants against supplier cost.

The multi-supplier Shopify guide explains the operating decisions behind it. Results from one store are examples of past work, not a promise for yours.

How a project starts

Send your store URL, approximate product count, number of suppliers and the systems that currently own stock and prices. A sample supplier file helps. Please don’t send passwords, API keys or customer records.

We agree on the problem, the systems involved and what a correct result looks like. I then propose a scope, the checks we run before going live and a rollout plan. Pricing and timing depend on that review. The inventory integration brief helps you prepare, and I work remotely on CET hours.

Book a 30-minute call or email me about your supplier setup.