inStockOnly

inStockOnly is a filter parameter used in inventory and e-commerce systems to restrict results to products that are currently in stock. When enabled, product listings, search results, and API responses exclude items with zero or negative stock and show only items available for immediate purchase. The flag is often implemented as a boolean value named inStockOnly in API queries or user interface filters.

The behavior may vary by stock model and warehouse. In multi-warehouse setups, inStockOnly typically refers to stock at a specified warehouse or fulfillment center, or to consolidated stock across locations. Systems may account for reserved quantities, backorders, or vendor-managed inventory, which can affect whether an item is considered in stock for sale. Some platforms also support per-variant stock, so individual sizes or colors may be in stock while others are not.

Usage and benefits include improving shopper experience by eliminating items that cannot be shipped immediately, reducing order errors and cart abandonments, and supporting real-time inventory management. Implementation may require synchronization with inventory management systems to reflect real-time stock levels; latency or stock reconciliation can affect accuracy. Limitations include location granularity, backorder policies, and cross-channel stock visibility.

Related concepts include stock status, availability, backorder, and fulfillment. The exact semantics of inStockOnly can differ between platforms and integrations.