CS.DEALS API
Real-time prices, listings and trade volume from CS.DEALS, unified with 20+ other marketplaces through a single REST endpoint.
cs.deals
Operational proof
The leading Steam data platform for production applications.
Established in 2018 and trusted by developers, marketplaces and trading platforms.
Tracked items
8,419
Active listings (24h)
Last update
2026-09-10
19:57 UTC
Refresh cadence
~15 min
Between scrapes
24h Volume
$130,149
Sum price × quantity
Top 10 most expensive items on CS.DEALS
A visual preview of what the price API actually returns — pulled live from our DB.
| # | Item | Lowest price |
|---|---|---|
| 1 |
EMS Katowice 2014 Legends
|
$20,000.00 |
| 2 |
Undead Door
|
$7,339.99 |
| 3 |
Sticker | Titan | Katowice 2014
|
$3,200.00 |
| 4 |
Punishment Mask
|
$2,681.40 |
| 5 |
M4A1-S | Hot Rod (Minimal Wear)
|
$1,713.82 |
| 6 |
Alien Relic SMG
|
$1,690.99 |
| 7 |
★ Bayonet | Fade (Factory New)
|
$1,400.00 |
| 8 |
★ M9 Bayonet | Ultraviolet (Factory New)
|
$1,350.00 |
| 9 |
★ Karambit | Doppler (Factory New)
|
$1,250.00 |
| 10 |
★ StatTrak™ Bayonet | Lore (Factory New)
|
$1,250.00 |
Prices reflect the cheapest active CS.DEALS listing per item over the last 24 hours.
Games supported on CS.DEALS
Query CS.DEALS via our API
Filter the unified /steam/api/items endpoint
with markets=csdeals to
return only CS.DEALS listings — or omit it for a side-by-side view across every marketplace.
- → Single auth header, same JSON schema for every market.
- → Filter by game, item name, price range, float.
- → Sort by price, listing volume, or recency.
- → Same DTO across REST and WebSocket streams.
Dedicated CS.DEALS endpoints
On top of the unified /steam/api/items route, every market we cover gets two convenience endpoints — one schema, one auth header, every marketplace.
/market/csdeals/prices
Live prices snapshot
Returns the current CS.DEALS catalogue as a flat array. Each row is one item with the lowest active price we have on record.
[
{
"market_hash_name": "Souvenir UMP-45 | Gunsmoke (Minimal Wear)",
"price": 130.69,
"quantity": 1,
"createdat": "2026-09-10T00:00:00+00:00",
"variants": null
},
{
"market_hash_name": "Sticker | Slab (Foil) | Krakow 2017",
"price": 114.65,
"quantity": 1,
"createdat": "2026-09-10T00:00:00+00:00",
"variants": null
}
]
- · Same JSON schema across every marketplace we cover.
- · We surface the lowest price per item — never an average, never a stale tick.
- · Optionally filter by market_hash_name or convert prices via ?currency=EUR.
/market/csdeals/history
Per-item price history
Daily-snapshot history of the lowest CS.DEALS price for a given item, ideal for charts and portfolio trackers.
[
{
"createdat": "2026-09-03T00:00:00+00:00",
"price": 124.40,
"quantity": 1
},
{
"createdat": "2026-09-09T00:00:00+00:00",
"price": 130.69,
"quantity": 1
}
]
- · One row per day, always the lowest price we recorded for that day.
- · Bounded with start_date and end_date (YYYY-MM-DD).
- · market_hash_name is required — history is per-item, not per-market.
Prefer one call across every marketplace? Use the unified /steam/api/items endpoint with markets=… — same DTO, comparison data included.
About CS.DEALS
CS.DEALS is one of the third-party marketplaces aggregated by the Steamwebapi pricing layer. Listings are scraped on a fixed schedule, normalised into a single schema, and merged with the data we collect from Steam, other community markets, and direct exchange integrations.
If you build a portfolio tracker, an arbitrage bot, or simply need a reliable price reference for CS.DEALS items, you can hit the unified /steam/api/items endpoint with markets=csdeals instead of building one scraper per source.
For the complete list of supported marketplaces, refresh cadence, and an interactive playground, see our Price API hub.
CS.DEALS API — FAQ
What is CS.DEALS?
CS.DEALS is a third-party marketplace for game items. Steamwebapi tracks its listings and exposes them through a single REST API, normalised alongside the other marketplaces in our network.
Which games does CS.DEALS support via the API?
Through our API we currently surface 4 games for CS.DEALS. Each links out to its own /{game}-api landing page.
How do I access CS.DEALS prices?
Get an API key from the dashboard and call /steam/api/items with `markets=csdeals`. The response uses the same DTO across every market we cover.
How fresh are CS.DEALS prices?
Each marketplace has its own scrape cadence, balancing freshness against rate-limit budget. The "Last refresh" stat above shows the most recent successful scrape for CS.DEALS.
Is CS.DEALS safe to use?
We surface CS.DEALS for data purposes — trust signals are not derived from our review, so please verify the marketplace directly before transacting on it.
Start querying CS.DEALS in minutes
One key. One schema. Every marketplace.
Cannot find the right endpoint, data source or plan?
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.