CS Contractor takes a snapshot of every tracked item every three hours — price, listings, buy orders, sales — and reads the three patterns that come before a price spike. It won't tell you what to buy. It shows you where supply is vanishing, where demand is piling up, and where the volume is fake.
Free while in beta. No Steam login, no API key, nothing to install.
Pump alert: buy wall at 1044.0x offer volume with 75.0% daily turnover
Read it as: 1044 open buy orders queued behind every single listing, while 75.0% of the remaining supply sells out each day.
Each one is a plain ratio between numbers Steam already publishes. The point isn't the maths — it's that nobody checks them across 15,000 items every morning.
How fast the market eats through its own supply. Listings falling while sales hold steady means the float is being absorbed, not traded.
Fires when a fifth or more of the remaining supply sells out in a single day.
How many buyers are queued behind every listing. A tall wall stops the price falling and is expensive to fake, so it usually means someone real is committed.
Fires when there are more than 50 open buy orders per listing.
Sales spiking while the price stays flat is the signature of accumulation — someone buying steadily without letting the price run away from them.
Fires when volume climbs over 20% in a week and the price moves less than 5%.
Turnover — the share of listed supply that sells in a day — is the single most useful number on the site. It's on every row, colour-coded.
Supply dwarfs demand. Too heavy to move, too heavy to manipulate.
Healthy trade. Worth watching for a slow climb while the price sits still.
Supply is visibly draining each day. This is where most pumps are born.
Demand has outrun supply entirely. Expect violent, unreliable pricing.
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