Looking for a Steam inventory calculator? Check your items on Skinpock, a live product powered by SteamWebAPI.
Enter your Steam profile URL or SteamID on Skinpock. Public inventories only.
Your Steam inventory holds items associated with Steam and individual games: CS2 skins and cases, Dota 2 cosmetics, Rust items, TF2 items and more. Each game has its own inventory and its own item rules.
A Steam inventory calculator reads those items, finds available prices and estimates their combined value. It can also show item details, compare markets and track changes over time.
That estimate is the value of supported inventory items. It is separate from the cost of your game library or the value of a Steam account.
See the player experience, then explore the code behind a simple calculator.
A Steam and CS2 inventory value calculator using SteamWebAPI. Players can look up supported public inventories, inspect item prices, compare available markets and follow inventory value over time.
Our public example project shows an inventory lister and worth calculator built with Next.js and SteamWebAPI. Use it to understand the request flow and how item data becomes an inventory interface.
Review the current API documentation when adapting the example to your own application.
Explore the example on GitHubYour product owns the interface and valuation rules. SteamWebAPI supplies the inventory data and available prices, so you can build a calculator, portfolio tracker or marketplace inventory view.
| Your product needs | Start with | What it adds |
|---|---|---|
| Items & a basic valuationStart here | Steam Inventory APIGET /steam/api/inventory | Item identities, quantities, trade status and available Steam and marketplace price fields. |
| Market comparison & catalogs | Marketplace Price APIGET /steam/api/items | Catalog-wide pricing and selected marketplace data. Inventory requests also support detailed prices through with_prices and markets. |
| Profile details | Steam Profile APIGET /steam/api/profile | Available profile identity and avatar data for a recognizable inventory page. |
| Historical item valuations | Price historyPOST /steam/api/items/history | Historical price data for supported items. Save inventory snapshots separately to track changes in what a user owns. |
A basic calculator can start with one endpoint. Parsed inventory responses already include supported price fields. Add the other APIs when your product needs them, rather than making a separate price request for every item.
Keep the data flow simple and the value understandable.
Accept a SteamID or supported profile identifier and choose a game, such as cs2, dota, rust or tf2.
Call the Inventory API with your key. Retrieve all pages for large inventories and keep account-level errors separate from empty results.
Use one currency and a consistent price source. Multiply each available unit price by its item count, then sum the priced items.
Display the source, update time, missing prices and trade status. Store dated inventory snapshots if you want a portfolio history.
curl --include --get \
'https://www.steamwebapi.com/steam/api/inventory' \
--data-urlencode 'key=YOUR_API_KEY' \
--data-urlencode 'steam_id=76561198000000000' \
--data-urlencode 'game=cs2' \
--data-urlencode 'currency=USD' \
--data-urlencode 'select=assetid,markethashname,count,pricelatest,tradable'[
{
"markethashname": "AK-47 | Redline (Field-Tested)",
"count": 1,
"pricelatest": 25.00,
"tradable": true
},
{
"markethashname": "Revolution Case",
"count": 3,
"pricelatest": 0.50,
"tradable": true
}
]Estimated value = sum of item quantity × chosen unit price.
1 × $25.00 + 3 × $0.50 = $26.50
Example values only, not current market prices. Use decimal arithmetic or integer minor units, and round for display.
Keep your API key on your server. Steam returns at most 2,000 assets per page, so for larger inventories follow the returned last_assetid header with start_assetid until there is no continuation. A total calculated from one partial page is only a subtotal.
Cache results for your product's freshness needs, respect your plan's limits and handle unavailable Steam data explicitly. For scheduled portfolio updates, /steam/api/inventory/batch accepts up to 20 SteamIDs per request.
Steam inventory worth is an estimate based on the items you can see and the prices you select. A good calculator makes those choices visible.
Read the inventory valuation overviewSteam Market prices and third-party listing prices serve different purposes. Label them separately. A listing-based estimate does not guarantee a sale, a cash-out amount or the proceeds after fees.
Show unpriced items separately instead of silently treating them as worthless. CS2 float, patterns, stickers and Doppler phases can affect an individual item's value. Where supported, with_phase_price=1 applies available phase-specific prices.
Context 16 can reveal skins missing from normal public CS2 inventory responses, including newly received skins. This is not limited to a particular 7–10-day lock. Reconstruction requires parse=1 on the first page, without start_assetid, including in mode 1. It does not guarantee discovery of every new item. This reconstruction does not recover freshly received cases; cases already present in context 2 remain available normally.
trade_locked=0 is the default and requests only the normal inventory. Use 1 for context 16 only, 3 for a prompt normal-inventory response with context 16 included only if already completed, or 4 when both contexts are required. Mode 3 makes one optional context-16 attempt and cancels it if the normal inventory finishes first. Mode 4 retries missing contexts within the request budget and may use the last valid protected-item snapshot. Modes 1 and 3 cost +1 credit; mode 4 costs +2 credits per inventory, including per Steam ID in a batch.
With your own steam_login_secure cookie, only the existing trade_locked=0 and 1 modes apply, without the partner-mode surcharge; 3 and 4 are rejected. Existing try_first_seven_days_blocked_items clients retain their legacy routing and +1-credit surcharge when trade_locked is omitted. See the API reference for request parameters.
tradeprotectedmaxdays counts down from our first detection, not from Steam's actual protection start. We may first see an item with six days really remaining and initially report seven. Use the item's status fields to determine tradability.
Price history alone does not reveal what a player owned last month. Save the item quantities, valuation source, currency and observation time so portfolio changes remain explainable.
Open your Steam Community profile and select Inventory, then choose the game. To check an estimated inventory value, open Skinpock and enter your Steam profile URL or SteamID. Your inventory must be public for a public lookup.
Skinpock is a ready-to-use Steam inventory calculator powered by SteamWebAPI. It combines supported inventory items with available Steam and marketplace prices. Developers can build their own calculator using the Inventory API and a consistent price source.
A public inventory can be looked up using its owner's SteamID or profile URL. Public lookups cannot read a private inventory. An unavailable or private inventory should be shown as unavailable, not as an inventory worth zero.
Calculators can use different marketplaces, currencies, update times and valuation rules. Steam Market prices differ from third-party listing prices. Fees, liquidity and item-specific details can also affect the amount a seller actually receives.
Inventory value covers supported items held in game inventories, such as skins, cases and other marketable items. It does not include the purchase price of your game library, playtime, badges or a resale value for your Steam account.
Start with GET /steam/api/inventory. Parsed responses can already include item quantities and price fields, so a basic calculator does not need a separate price request for every item. Add catalog, marketplace, profile or price-history endpoints when your product needs those features.
Yes, including in public CS2 inventories. Reconstructing newly received skins requires parse=1 on the first page, without start_assetid. trade_locked=1 fetches context 16 only; 3 returns the normal inventory promptly and includes context 16 only if already completed; 4 requires both contexts within the request budget and may use a protected-item snapshot. The default, 0, returns the normal inventory only. Modes 1 and 3 cost +1 credit per inventory; mode 4 costs +2, including per Steam ID in a batch. Discovery of every new item is not guaranteed. Freshly received cases are not covered by protected-item reconstruction; cases already in the normal inventory remain available.
No. It is a conservative day count based on when SteamWebAPI first detected the protected item. We store that observation and count down from seven days. Protection may have started earlier, so the actual remaining time can be shorter. The value alone does not establish tradability.
Open Skinpock to check a collection. Use SteamWebAPI to build the experience your users need.