Prototype environment

All market values are illustrative demonstration data. This site does not execute trades or connect to third-party marketplaces.

Search databaseItems, collections, and games
Navigate OpenPrototype index

Independent Steam Community Market Intelligence

The database
behind the market.

Search, compare, and follow Steam items, collections, and market behavior through historical data, visual discovery, and explainable signals.

No tradingNo gamblingSteam market data only
Freshness43 sec
Tracked items1.2M
Observed listings5.8M
Unusual conditions184

All values are demonstration data; coverage and freshness language are part of the prototype trust model.

Market context

Understand the market, not just the price.

A market-level view combines trend, breadth, activity, supply pressure, and the evidence that produced each state.

CS2 Containers Index1,228.9+9.2%
Observed value1,228.9
Demonstration observationsHover to inspect · Select a range

Radar discovery

See what’s moving.

Discover unusual item and collection behavior, then inspect the evidence behind it.

Open full Radar

Explainable signals

Every signal should show its work.

Conditions are descriptive, not recommendations. Each one exposes its baseline, window, magnitude, and evidence.

Activity anomalyhigh

Dreams & Nightmares Case

3.8×24H · 30-day hourly baseline

Observed activity accelerated at 14:05 UTC while listing supply remained inside its expected range.

Evidence
The event cleared the activity threshold across three consecutive observation buckets and was not explained by a single listing.
Supply contractionmedium

Sticker Capsule 2

−14.2%7D · observed listings

Observed listings declined steadily while the median observed sale price increased over the same period.

Evidence
The change persisted through the complete seven-day window and remained after deduplication and stale-listing controls.
New 90-day highhigh

Kilowatt Case

$0.8990D · +22.6% over 30D

The observed price moved above its previous 90-day high with broad participation across the container category.

Evidence
The event is supported by distributed activity and multiple price buckets rather than one isolated observed transaction.
Collection wavemedium

Stardew Valley Card Set

7 of 824H · cards elevated

Most cards in the set showed elevated activity during the same rolling measurement window.

Evidence
The event requires constituent breadth and excludes a set when a single card is responsible for the aggregate change.

Your database

Build a market workspace around what you follow.

Save games, collections, items, and signal types. Return to a focused view of the evidence that matters to you.

Open your watchlist
WATCHING0 saved entities
CSD&N Case+3.5% today
CSCapsule 2+1.9% today
CSKilowatt+4.8% today

Trust by design

Every conclusion should be inspectable.

Raw observations, normalized entities, derived metrics, and detected events remain separate. Explanations are downstream from deterministic evidence.

OBSERVATIONSMETRICSEVENTSCONTEXT
Read the methodology