What SECND does, and who it is for
SECND is one system for resale inventory: photograph an item, let AI draft the listing, publish it to every marketplace you sell on, sell it anywhere, and have it come down everywhere else automatically. It is built for inventory that is one-of-a-kind rather than for restocking the same UPC.
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The problem SECND is built around
Almost every piece of retail software assumes you can look a product up. It expects a UPC, a supplier catalogue, and a reorder point. Resale inventory has none of those. Each item arrives once, has to be described from scratch, and then needs to exist simultaneously on a shop floor and on however many marketplaces you sell through.
That creates two costs that dominate a resale business. The first is intake: the minutes spent photographing and describing each unique item. The second is reconciliation: the constant risk that something sells in two places at once because your floor and your marketplaces do not share a single stock record.
SECND attacks both. AI drafting collapses intake from minutes to seconds per item, and one shared inventory record behind every channel makes double sales structurally impossible rather than a thing you have to watch for.
What SECND actually does
- AI intake: photograph an item and get a drafted title, category, condition, attributes and description you review before it goes anywhere.
- Crosslisting: publish that one draft to eBay, Etsy, Depop, Poshmark, Grailed, Vinted, Shopify, Square and your own SECND storefront, with each marketplace's required fields filled in.
- Auto-delisting: when any channel reports a sale, the item is marked sold and every other listing comes down within seconds.
- POS sync: Square, Shopify and Lightspeed sales flow back into the same inventory record, so a floor sale removes the online listings.
- Consignment and vendors: consignor accounts, commission splits, booth rent, balances and payout runs.
- Orders and shipping: marketplace orders land in one queue with shipping profiles, labels and tracking.
- Reporting: sell-through, aging, margin after marketplace fees, and performance by channel.
Who it is for
SECND is used across the whole resale spectrum, and the configuration differs more than the software does. A one-person crosslister and a forty-booth antique mall are running the same engine with different parts switched on.
| If you are… | What you will use most |
|---|---|
| An online reseller | AI drafting, crosslisting, auto-delisting, bulk edit and relist |
| A consignment store | Consignor accounts, splits, payout ledger, POS sync, crosslisting |
| A thrift or antique shop | Photo-first intake, barcode labels, sold-price pricing, storefront |
| A vendor or antique mall | Booths, vendor codes, central register, settlement runs |
| An estate sale company | Batch cataloging, on-site register, online tail sales, client payouts |
| A retail store adding channels | POS sync, marketplace publishing, unified order queue |
See the setup for your business type
What SECND is not
Being clear about the edges saves everyone a wasted trial. SECND is not a general-purpose ERP, it is not an accounting package, and it does not run live auctions. It does not try to be a warehouse management system for pallets of identical goods, because that problem is already well solved and it is not the problem resale operators have.
How to start
- 1
Create an account on the free plan
The free plan is standing, not a trial. It includes crosslisting, sale detection and auto-delisting, plus a monthly allowance of AI-drafted listings. No card required.
- 2
Connect one channel first
Pick wherever most of your sales already happen. Connecting one channel and watching a single item behave correctly is worth more than connecting six and trusting them.
- 3
Import or create ten items
Enough to see the drafting quality, the labels, and the delisting behaviour without committing your whole catalogue.
- 4
Sell one item and watch the delist
This is the moment that tells you whether the system is doing its job. Sell one item on any channel and confirm the others disappear.
- 5
Then expand
Add the rest of your channels, import the full catalogue, and turn on the automations that fit your workflow.
Frequently asked questions
Is SECND a crosslister or an inventory system?
Both, and the combination is the point. A crosslister that does not own your inventory cannot reliably delist, because it does not know about your floor sales. An inventory system that does not publish leaves your stock invisible online. SECND does both so one stock record sits behind every channel.
Do I need to install anything?
No. SECND runs in the browser, with iOS and Android apps for sourcing and intake on the go. A Chrome extension is only needed for the small number of marketplaces that have no seller API and require a logged-in browser session.
Does it work for a business with multi-quantity products too?
Yes. One-of-a-kind items and multi-quantity catalogue products live side by side, which matters for stores that carry both unique secondhand stock and packaged new goods.
How long does setup usually take?
Connecting a first marketplace and getting an item live is typically a single sitting. A full migration with several channels and an existing catalogue is usually a week of part-time work, mostly waiting on imports rather than doing data entry.
Step-by-step product docs
This guide explains how it works. These show you exactly where to click.
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Run it all on one system
Start free. Crosslisting, sale detection and automatic delisting are included, with no card required.