Adding marketplaces without losing the listings you built

The fear is rational and most tools earn it. A listing you have run for years is not just a product record — it is a position in a search index, a feedback score, and a title written specifically for how buyers on that marketplace search. A sync that pushes your shop’s data over the top destroys all three, and marketplace APIs have no undo.

Stock and content are not the same decision

There is exactly one attribute that genuinely must agree everywhere: how many you have. Get that wrong and you oversell, refund, and take a hit to your seller metrics.

Everything else — title, description, images, price — has editorial value that lives on the marketplace, not in your shop. An Amazon title carries size, colour and search keywords that a shop’s parent title does not. Pushing the shop version over it replaces the thing that ranks.

So Qwikr treats them separately. Marketplaces default to stock only: quantities flow, content does not. You opt into content sync per account, when and if you want Qwikr to own those listings.

The default covers every marketplace — Amazon, eBay, Etsy, OnBuy, TikTok Shop — because whether you are a merchant Qwikr is listing for the first time or one who has sold there for years cannot be read off the channel name.

Nothing is written until it can be undone

Before Qwikr is allowed to write anything to a marketplace account, it captures the account as it finds it. If that snapshot has not been taken, the push does not happen — it fails closed rather than destructively.

This is not a warning dialogue you can click through. It is enforced on the push path, and a blocked push queues the snapshot that unblocks it, so the resolution is automatic rather than a support conversation.

Matching your catalogue to listings that already exist

The awkward part of connecting an established account is not the API, it is deciding which of your products corresponds to which of their listings. Get it wrong and stock flows to the wrong item.

Qwikr matches on barcode first — identity rather than inference. A barcode match is a fact; a title match is a guess. Where no barcode exists, candidate pairs are surfaced for a human to confirm rather than being adopted silently, because a wrong pairing sends stock into a listing that is not yours to control.

One thing worth knowing about barcodes: they are not always trustworthy on the marketplace side. Some brands’ barcodes are already occupied by other sellers’ listings, which is why matching by barcode alone is checked rather than assumed.

Products that must never reach a marketplace

Most catalogues contain things that cannot be listed everywhere — a brand with channel restrictions, bladed items, anything on clearance. Qwikr expresses these as rules in your own vocabulary:

• By brand — nothing from this vendor goes to this channel
• By product type — knives, aerosols, whatever the marketplace restricts
• By tag — anything you already tag in your shop

The options are read from your own catalogue rather than typed by hand, so a rule cannot be written against a brand spelled differently from the one in your data. A rule that silently matches nothing is worse than no rule, because you believe you are protected.

What connecting actually looks like

1. Connect the account — OAuth, one click, no credentials to find or paste
2. Qwikr reads the listings that are actually live, including ones it did not create
3. It snapshots the account before it is permitted to write
4. You confirm the matches it cannot prove by barcode
5. Stock starts flowing. Titles, images and descriptions stay exactly as they were

If you later decide you want Qwikr to own the content too, that is a switch you throw deliberately — with the snapshot already taken, on an account whose listings you have already matched.