Show real inventory levels when stock is running low. Configurable thresholds ensure the message only appears when it matters — creating genuine urgency from real data.
ProofNudge reads real inventory levels from your Shopify store via Liquid and displays stock alerts only when conditions are met.
The {{stock_left}} variable pulls the current variant's inventory quantity directly from Shopify's Liquid context. No API calls, no delay.
Set a condition like "show only when stock_left is less than 10." The message stays hidden until inventory actually drops below your threshold.
The exact count appears in the message: "Only 3 left in stock." As inventory changes, the message updates automatically.
Combine stock levels with other signals for maximum impact. Each message uses real data from your store.
{{stock_left}}
Current inventory quantity for the selected variant (from Liquid)
{{viewer_count_current}}
Combine with stock for "5 left and 12 people viewing" messages
{{order_count_24h}}
Pair with stock for "Selling fast — 8 sold today, only 3 left"
Scarcity is one of Cialdini's six principles of persuasion. When supply is limited, perceived value goes up.
People feel the pain of losing something more than the pleasure of gaining it. "Only 3 left" triggers this instinct directly.
Low stock removes the "I'll come back later" option. Shoppers who might have bounced make the purchase decision right now.
Because ProofNudge uses real Shopify inventory data, the scarcity signal is genuine. Shoppers trust what they can verify by adding to cart.
Low stock alerts that respect your brand and your customers.
Set your own threshold — show alerts at 10 units, 5 units, or 3. The message only appears when stock genuinely drops below your chosen level.
Stock levels reflect the selected variant, not the total product. "Only 2 left" means 2 of that specific size and color.
Inventory comes from Shopify's Liquid templating engine — the same source that powers your "Add to Cart" button. Always accurate, always in sync.
Write your own message template. "Only 3 left," "Low stock — act fast," or "Selling fast — 8 remaining." Your brand voice, your rules.
Conditional display rules mean the message disappears when stock is replenished. No stale "Only 3 left" messages when you actually have 500 units.
Stack low stock with real-time visitor counts and purchase notifications for maximum impact: "Only 3 left — 24 people viewing right now."
Install ProofNudge and create low stock alerts that use real inventory data. Follow our getting started guide to set up your first campaign in minutes. Plans from $19/mo with a 14-day free trial.
Install on Shopify