Platform Integrations

VaultLister 3.0 connects to 9 marketplaces. Each platform uses either an official API or a browser automation bot depending on what the platform exposes.

Production ready — live with official API
Automation — Playwright browser bot
Pending — awaiting approval or credential setup

Official API

eBay

Production ready OAuth 2.0

Full listing creation, inventory sync, offer management, and order import via the eBay Sell and Buy APIs. Scopes: sell.inventory, sell.fulfillment, sell.marketing.

Etsy

Pending app approval OAuth 2.0

Listing creation, inventory management, and order sync via Etsy Open API v3. Integration is code-complete; activation is gated on Etsy developer app approval for production access.

Shopify

Production ready REST API

Product and inventory sync, order import, and fulfillment updates via the Shopify Admin REST API. Requires a private app or custom app token scoped to write_products and read_orders.

Browser Automation

Poshmark

Automation Playwright

Listing creation, closet sharing, follow-back automation, and offer management via headless Chromium. Supports scheduled sharing with configurable rate limits.

Mercari

Automation Playwright

Listing creation and price updates via headless Chromium. Automatic relisting to keep items surfaced in search. Offer acceptance rules configurable per item.

Depop

Automation Playwright

Listing creation, image upload, and price-drop automation via headless Chromium. Integrates with the image bank for automatic watermarking before upload.

Grailed

Automation Playwright

Listing creation and bump automation via headless Chromium. Category and size mapping handled automatically from InventoryItem attributes.

Facebook Marketplace

Automation Playwright

Listing creation via headless Chromium. No official seller API is available; all actions are performed through the standard web interface with human-pace rate limiting.

Whatnot

Automation Playwright

Inventory sync and listing creation for Whatnot shows via headless Chromium. Scheduled show reminders and lot creation from inventory items.