One stock ledger
Storefront, POS, buylist, and marketplace listings all draw from the same inventory record. When a card sells in one place, the available quantity is reduced everywhere else instead of waiting for staff to remember a manual update.
Whatnot
Whatnot integration
Whatnot is the dominant live-selling marketplace for trading cards in North America. Storefront Pro supports Whatnot sellers on the inventory and fulfilment side — your Storefront Pro inventory is the single source of truth, sold items decrement centrally, and post-stream fulfilment flows through your existing order pipeline. Direct API integration is on our roadmap.
Technical spec
Whatnot sync — how it works
The concrete details of the Storefront Pro ↔ Whatnot integration. No hand-waving — read it before you apply, not after.
- Current support
- Inventory + fulfilment workflow (CSV / manual)
- Direct API sync
- On roadmap
- Live auctions on storefront
- Yes — native to Storefront Pro
- Order fulfilment
- Post-stream orders flow into Storefront Pro dashboard
Capabilities
What the integration does
Concrete features, not marketing bullets.
- Export Storefront Pro inventory to Whatnot listing format
- Decrement stock after a Whatnot stream from a single source
- Fulfil Whatnot orders through your existing Storefront Pro pipeline
- Run live auctions natively on your own Storefront Pro site (alternative to Whatnot-only)
- Reconcile Whatnot sales into your unified sales reporting
Operations
How Whatnot fits into one inventory source
Marketplace sync is only useful if staff can trust the numbers at the counter. Storefront Pro treats each channel as an output of the same stock ledger, not as a separate spreadsheet to reconcile later.
Channel-specific rules
Your own storefront can hold margin while marketplace listings compete more aggressively. Pricing rules can reflect fees, shipping expectations, condition, language, and how quickly you want a particular catalogue to move.
Order reconciliation
Orders from external channels are pulled into the same fulfilment queue as online and in-store sales. Staff pick, pack, refund, and report from one place instead of switching between seller portals.
Exception handling
API limits, rejected listings, missing SKUs, and price-rule conflicts are visible in the admin dashboard. The integration is designed to make failures obvious, because silent sync failures are how oversells happen.
Limitations
What it doesn't do
We'd rather tell you the limits before you apply than have you discover them after acceptance.
- Direct Whatnot API sync is on roadmap — current support is workflow-based
- Real-time stock decrement during a live Whatnot stream requires manual reconciliation
- Whatnot-specific promo tooling is not replicated inside Storefront Pro
FAQ
Frequently asked questions
- Can I sell on Whatnot and still use Storefront Pro as my source of truth?
- Yes. Storefront Pro remains your inventory master. Whatnot listings are created from your Storefront Pro catalogue, and post-stream fulfilment flows back into your Storefront Pro order pipeline.
- Why not a direct API sync?
- Whatnot's seller API surface is more limited than TCGplayer or Cardmarket for catalogue-level sync. Full API-level parity is on our roadmap as Whatnot expands its seller tooling.
- Do you offer live auctions on my own site?
- Yes. Storefront Pro includes native live auctions and live streaming — a direct alternative to Whatnot where you keep 100% of the margin and the customer relationship.
- Is this integration included in Storefront Pro?
- Yes. All inventory, fulfilment, and live-auction features are included at £1,000 setup + 2% on TCG item sales.
Storefront Pro
Whatnot sync — included when your onboarding slot opens
Every marketplace connector is bundled on both limited-access plans. Storefront Pro has reached this month's onboarding limit and is currently waitlist-only (£1,000 setup + 2% only on TCG item sales). Enterprise remains application-only at £25,000/year, billed annually, or £2,499/month when paid monthly, with 0% sales fees, dedicated support, and direct founder access. Enterprise is capped at 5 new clients per year; 3 places remain for 2026.