Toploader OS is a sleek desktop toolkit for Magic: The Gathering sellers on Whatnot: inventory, Scryfall print matching, foil treatment handling, market-percentage pricing, Whatnot exports, show prep and sales analytics in one workflow.
Toploader OS brings the repetitive parts of live selling into one fast, seller-first desktop workflow.
Search Scryfall variants, save set codes, collector numbers, images, finishes and special foil treatments so the right version of each card is listed.
Handle foil, etched, surge, galaxy, textured, raised, neon ink and other treatments separately instead of flattening every shiny card into one generic foil bucket.
Set selected singles to a chosen percentage of saved market price for sellout streams while preserving the original reference market value.
Separate workspaces for different stock pools, with their own sales, images, shows, snapshots and export history.
Prepare marketplace-ready titles, descriptions, quantities, prices, conditions, shipping profiles and public image URLs.
Track gross revenue, payouts, net profit, items sold and stock snapshots after the show instead of guessing from disconnected files.
Build pack breaks, surprise sets, bundles and event pools with Whatnot fee math baked into the target price.
Map Whatnot sold item names back to your inventory, deduct stock and remember mappings for repeat shows.
Let new sellers start free, then unlock advanced workflows with a Lemon Squeezy licence key when the business needs it.
The site copy is intentionally focused around Whatnot Magic: The Gathering sellers, card inventory management, MTG pricing workflows and marketplace exports — the phrases your ideal buyers actually search for.
Search cards, choose exact printings, save images and separate stock into profiles.
Use market-led pricing, manual targets, margin math or bulk percentage discounts.
Prepare titles, quantities, conditions, shipping profiles and Whatnot-ready exports.
Import sales, map sold names to inventory, deduct stock and review profit analytics.
For new sellers testing the inventory workflow before committing to Pro.
For active Whatnot and MTG sellers who need exports, reconciliation, bulk workflows and advanced seller tooling.
Toploader OS is tuned for MTG singles because of Scryfall print data, but the inventory, sealed, accessories, show builder and seller tools can support broader trading-card workflows.
The app prepares Whatnot-focused CSV exports and reconciliation workflows. You still control uploads, listings and sales activity in your Whatnot seller account.
Pro uses a Lemon Squeezy licence key. After purchase, customers activate the key inside the desktop app to unlock advanced workflows.
Yes. This theme outputs basic metadata only when a major SEO plugin is not detected, so Yoast, Rank Math or AIOSEO can take over cleanly.
Download the latest build, test the workflow, then unlock Pro when you are ready to run faster Whatnot shows.
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