Seller on WhatsApp
Catalog, price and stock by spreadsheet — scale becomes chaos before Q2.
Castle ecosystem
Multi-seller marketplace without rebuilding everything.
Vendor Scale is cross-platform SaaS to run sellers, storefronts, commissions and onboarding — integrated with native Castle delivery when you go beyond your own store.
Alternative to native VTEX marketplace, Shopify apps or Magento modules
Operator centralizes approval, catalog and orders; seller publishes and meets SLA in their portal — split, shipping and tax built for Brazil.
Marketplace stalls on operations, not the idea.
Everyone wants multi-seller; few survive approval queues, wrong commission and sellers without a portal.
Commission by hand
Payout, split and disputes calculated outside the system — finance becomes the bottleneck.
Broken experience
Checkout, shipping and invoicing inconsistent across sellers — customer doesn’t know who delivers.
How Vendor Scale operates
From seller onboarding to payout — operator governance, partner autonomy.
- 1
Seller onboarding
Registration, documents, allowed categories and SLA — all with operator approval.
- 2
Catalog and storefront
Each seller publishes within scope; operator sees queue and exceptions.
- 3
Unified order
Customer buys once; split, shipping and status follow marketplace rules.
- 4
Native Castle delivery
Connector + theme/blocks per platform on implementation — demo simulates, production integrates.
Features for marketplace operators
Vendor Scale pattern — multi-seller, operator panel, seller portal and marketplace checkout.
Multi-seller
Many sellers, one operator, unified GMV and exception view.
Operator panel
Approvals, catalog, orders and minimum KPIs to decide — not a social feed.
Seller portal
Partner publishes, sees orders and payouts without accessing the whole business.
Payment and split
PIX, split and BR integrations aligned to marketplace flow.
On your platform or migrating with Castle
VTEX seller, Shopify apps, Magento marketplace or native delivery — we recommend in the proposal.
- VTEX
- Shopify
- Magento / Hyvä
- WooCommerce
- ERP
- Shipping
- Payments
- Fraud screening
- Tax invoicing
Governance before volume
Scaling marketplaces need clear rules — not just a pretty storefront.
Defined roles
Operator, seller and customer know who does what at each step.
Exception audit
Disputes, cancellations and approval queues with trace — ops sees before ERP.
Declared integration
Shipping, payment and invoicing wired to marketplace flow.
Continuous evolution
SaaS subscription + Castle delivery for connector and theme when needed.
Castle Commerce bundle
Enabled marketplace in the demo? Vendor Scale is the recommended product — with monthly discount when bundled with Castle delivery.
Frequently asked questions
- Does it replace native platform marketplace?
- Not always. VTEX, Shopify and Magento have native options — Vendor Scale is a cross-stack SaaS alternative when it fits commercially and technically.
- Do I need Castle to implement?
- Native integration on the client store goes through Castle delivery; SaaS is a separate subscription, often bundled.
- B2B and B2C?
- Yes — operator defines categories, margin and who joins; onboarding adapts to the model.
- What about Castle demo?
- Marketplace module in the demo points to Vendor Scale in the proposal — UX reference, native production.
- How long to go live?
- Depends on catalog, pilot sellers and tax integrations — realistic scope in conversation.
Want to structure your marketplace?
Tell us the model — B2B, B2C, how many sellers in year one. We design the path.
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