Build CS2 skin catalogues, price comparisons and inventory tools with three purpose-built APIs and one Steamwebapi key.
Use Steam App ID 730 with the three core Counter-Strike 2 API products. Each product has a distinct data purpose and links to its dedicated page.
Retrieve the complete supported CS2 item catalogue, item metadata and current prices through the Items endpoint.
/steam/api/items
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Compare current prices from supported third-party marketplaces through market filters and dedicated market endpoints.
/steam/api/items?markets=…
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Fetch public CS2 inventories by SteamID with asset IDs, class IDs and normalized item metadata.
/steam/api/inventory
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Three core API requests
Use the same game parameter mapped to Steam App ID 730 across the Items and Inventory endpoints. Add a market filter when you only need selected third-party prices.
curl -H 'X-Api-Key: YOUR_API_KEY' 'https://www.steamwebapi.com/steam/api/items?game=cs2'
curl -H 'X-Api-Key: YOUR_API_KEY' 'https://www.steamwebapi.com/steam/api/items?game=cs2&markets=MARKET_IDENT'
curl -H 'X-Api-Key: YOUR_API_KEY' 'https://www.steamwebapi.com/steam/api/inventory?steam_id=STEAM_ID64&game=cs2'
Operational proof
Established in 2018 and trusted by developers, marketplaces and trading platforms.
Counter-Strike 2 uses Steam App ID 730. The CS2 Price API returns the supported skin catalogue and current prices, the CS2 Market API compares third-party marketplaces, and the CS2 Inventory API retrieves public player inventories.
Use these endpoints for a CS2 item catalogue, price tracker, marketplace comparison or inventory checker. Responses are normalized where supported, while coverage and freshness remain explicit for each data source.
Tell the Steamwebapi team what you are building. A short sentence is enough — we will help you identify the right product and the simplest way to integrate it.