availability schema
Also called: instock schema, out of stock schema, product availability schema, availability property
Availability schema is the availability property inside a product's Offer in Schema.org structured data. It tells search engines whether the item can be bought, using a fixed value such as https://schema.org/InStock or https://schema.org/OutOfStock.
How availability schema works
The property lives inside the offers block of a Product’s structured data. Google accepts ten values: InStock, OutOfStock, PreOrder, BackOrder, PreSale, SoldOut, LimitedAvailability, Discontinued, InStoreOnly, and OnlineOnly. Schema.org itself defines two more (Reserved and MadeToOrder) that Google does not use for product results.
Format is strict. Use the full URL or the short name, never a human-readable string:
"offers": {
"@type": "Offer",
"price": "49.00",
"priceCurrency": "USD",
"availability": "https://schema.org/InStock"
}Free text like "In Stock" or true is not a valid enumeration value, so parsers ignore it. The marked-up state must also match what a shopper sees on the page. Google may verify product data before showing it in results, so if your schema says InStock while the page shows sold out (or your Merchant Center feed disagrees), the listing can be flagged or dropped.
Because stock changes fast, availability should update from the same event that changes your inventory, not on a nightly cron. Correct, live availability is what keeps a product eligible for merchant listing rich results and the price and stock annotations shown across Google’s shopping surfaces.
How it affects your traffic
Availability is a quality signal for product rich results. Get it right and your product pages qualify for merchant listing snippets and stock annotations on high-intent queries, which lifts click-through. Get it wrong (stale InStock on a sold-out page, or a free-text value) and Google can suppress the rich result or disapprove the product, quietly costing visibility. Wiring availability to real inventory events is a core piece of the technical work in an e-commerce SEO engagement.
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