# StackKnack > For full documentation content in a single file, see: https://stackknack.com/llms-full.txt StackKnack is inventory management software for sneaker and luxury resale businesses. It syncs inventory across Shopify, StockX, eBay, and Clover POS in real time. ## Primary audiences - Sneaker resale store owners - Luxury consignment store operators - Multi-channel resale businesses - Event vendors at sneaker conventions and pop-ups ## Core capabilities - Multi-channel inventory synchronization (Shopify, StockX, eBay, Clover POS) - Real-time oversell prevention - Margin tracking with platform fee calculation - Consignment management with settlement reports - Dead stock detection and alerts - Multi-location inventory support ## Integrations - Shopify (bidirectional, real-time) - StockX (bidirectional, real-time) - eBay (bidirectional, real-time) - Clover POS (bidirectional, real-time) ## Documentation - Overview: https://stackknack.com/docs/what-is-stackknack - Glossary: https://stackknack.com/docs/glossary - FAQ: https://stackknack.com/docs/faq - Use case — sneaker reseller: https://stackknack.com/docs/use-cases/sneaker-reseller-inventory - Use case — event vendor: https://stackknack.com/docs/use-cases/event-vendor-selling - Integration — Shopify: https://stackknack.com/docs/integrations/shopify - Integration — eBay: https://stackknack.com/docs/integrations/ebay ## AI overview - AI overview: https://stackknack.com/ai/overview - Capabilities: https://stackknack.com/ai/capabilities - Integrations detail: https://stackknack.com/ai/integrations ## Comparisons - StackKnack vs Spreadsheets: https://stackknack.com/compare/stackknack-vs-spreadsheets - StackKnack vs Airtable: https://stackknack.com/compare/stackknack-vs-airtable ## Contact - Website: https://stackknack.com - Email: info@stackknack.com ## Pricing - Starts at $150/month