Steam Community Market data from **`itemordershistogram`**: best ask/bid, spread, order-book depth, and internal liquidity. Requires `item_nameid`. **Plan: Basic** (included in Pro and Enterprise). Legacy ACL path `/v1/prices/steam` still grants access.
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openapi: 3.2.0
info:
title: CS Price Steam API
version: 1.6.0
description: 'Public price API for the CS2 (Counter-Strike 2) skin ecosystem.
Latest listing prices are available via a single item-centric endpoint
`GET` / `POST` `/v1/prices/latest` (optional `markets` filter). Use
`/v1/prices/search` for one skin with Doppler phase expansion, plus
buy-orders, float-ranged, price history, YouPin market-cap indexes and
market-sales export.
Subscription customers can additionally download a daily **ZIP export** of
historical marketplace sales (`/v1/market-sales/export`) as three CSV files
(sales, stickers, keychains) covering the last 24 hours.
## Subscription plans
API access is grouped by plan. Higher tiers include all endpoints from lower
tiers:
| Plan | Included categories |
|------|---------------------|
| **Basic** | Listing Prices |
| **Pro** | Basic + Buyorder Prices + Float Ranged |
| **Enterprise** | Pro + Price History + Sales Data (full API access) |
Each API key is issued for a specific plan and may be further restricted via
endpoint ACL (`allowed_endpoints`).
## Authentication
Every non-documentation endpoint requires an API key in the `x-api-key`
request header. Keys are issued per customer and optionally scoped to a
subset of endpoints (endpoint ACL). Every key is limited to 10 requests
per second; there is no daily or monthly cap. Requests over the limit get
`429` with a `Retry-After: 1` header.
## Response format stability
All response shapes documented here reflect what the server **currently**
returns. In particular:
- Numeric fields for prices, percentage changes, averages and liquidity
are serialized as **strings**, not numbers.
Example: `"price_rmb": "7333.0000"`. Clients must parse them as
fixed-point / arbitrary-precision decimals.
- `stattrak` and `souvenir` are serialized as **integers** (`0` or `1`),
not booleans.
- `updated_at` is ISO-8601 UTC (`YYYY-MM-DDTHH:mm:ss.sssZ`).
- `liquidity` is an internal liquidity score and may be `null` if
unavailable for that skin.'
contact:
name: CS Price API Support
url: https://cspriceapi.com
servers:
- url: https://api.cspriceapi.com
description: Production
- url: http://localhost:8080
description: Local development
security:
- ApiKeyAuth: []
tags:
- name: Steam
description: 'Steam Community Market data from **`itemordershistogram`**: best ask/bid,
spread, order-book depth, and internal liquidity. Requires `item_nameid`.
**Plan: Basic** (included in Pro and Enterprise). Legacy ACL path
`/v1/prices/steam` still grants access.'
paths:
/v1/steam:
get:
tags:
- Steam
summary: Steam Community Market snapshot (Basic)
description: 'Returns Steam Community Market rows in the standard CS Price API envelope
(`data`, `meta`, `source`, `requestor`, `plan`, `timestamp`).
Each row includes `best_ask` / `best_bid`, listing counts, computed
`spread` / `spread_pct`, `orderbook` levels, and internal `liquidity`. Prices are decimal **strings**
(USD for CS2).
Omit `market_hash_name` for the full catalog (~27k skins). Pass one or
more comma-separated names to filter (max 100). Prefer gzip for full
snapshots.'
operationId: getSteamMarket
parameters:
- name: market_hash_name
in: query
required: false
description: 'Optional filter. One Steam `market_hash_name`, or comma-separated list
(max 100). Omit for all items.
'
schema:
type: string
example: AK-47 | Redline (Field-Tested)
- name: bucket
in: query
required: false
description: 'Optional collector bucket filter (`1` = hot, `2` = warm, `3` = cold).
'
schema:
type: integer
enum:
- 1
- 2
- 3
responses:
'200':
description: Steam Community Market rows (`data` array) with `meta` summary.
headers:
Cache-Control:
schema:
type: string
example: public, max-age=30
content:
application/json:
schema:
$ref: '#/components/schemas/SteamMarketResponse'
examples:
single:
summary: Single skin
value:
data:
- market_hash_name: AK-47 | Redline (Field-Tested)
stattrak: 0
souvenir: 0
exterior: Field-Tested
item_page_url: https://steamcommunity.com/market/listings/730/AK-47%20%7C%20Redline%20(Field-Tested)
item_nameid: 165027595
currency: USD
liquidity: '8.40'
best_ask: '12.45'
ask_listings: 85
best_bid: '11.90'
bid_orders: 240
spread: '0.55'
spread_pct: '4.42'
bucket: 1
collected_at: '2026-08-28T10:00:30.000Z'
updated_at: '2026-08-28T10:00:30.000Z'
orderbook:
ask_levels: 3
bid_levels: 2
asks:
- price: '12.45'
quantity: 2
- price: '12.50'
quantity: 1
bids:
- price: '11.90'
quantity: 3
meta:
count: 1
currency: USD
filtered:
- AK-47 | Redline (Field-Tested)
source: Steam Community Market
requestor: you@example.com
plan: basic
timestamp: '2026-08-28T10:00:35.000Z'
'400':
description: Invalid query parameters
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
'401':
description: Missing or invalid API key
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
'403':
description: API key not allowed for this endpoint
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
'429':
description: Rate limit exceeded
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
'500':
description: Internal server error
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
components:
schemas:
SteamOrderbook:
type: object
description: Normalized bid/ask ladder from Steam order histogram.
properties:
ask_levels:
type: integer
example: 3
bid_levels:
type: integer
example: 2
asks:
type: array
items:
$ref: '#/components/schemas/SteamOrderbookLevel'
bids:
type: array
items:
$ref: '#/components/schemas/SteamOrderbookLevel'
SteamMarketItem:
type: object
description: 'Steam Community Market snapshot for one catalog skin. Includes spread
metrics, order book depth, and internal liquidity score.
'
properties:
market_hash_name:
type: string
example: AK-47 | Redline (Field-Tested)
stattrak:
$ref: '#/components/schemas/TinyBool'
souvenir:
$ref: '#/components/schemas/TinyBool'
exterior:
$ref: '#/components/schemas/Exterior'
item_page_url:
type: string
format: uri
nullable: true
example: https://steamcommunity.com/market/listings/730/AK-47%20%7C%20Redline%20(Field-Tested)
item_nameid:
type: integer
nullable: true
example: 165027595
currency:
type: string
example: USD
liquidity:
allOf:
- $ref: '#/components/schemas/DecimalString'
nullable: true
best_ask:
allOf:
- $ref: '#/components/schemas/DecimalString'
nullable: true
ask_listings:
type: integer
nullable: true
description: Listing count at the best ask (Steam histogram `sell_order_count`).
best_bid:
allOf:
- $ref: '#/components/schemas/DecimalString'
nullable: true
bid_orders:
type: integer
nullable: true
description: Highest-bid order count from histogram.
spread:
allOf:
- $ref: '#/components/schemas/DecimalString'
nullable: true
description: best_ask − best_bid
spread_pct:
allOf:
- $ref: '#/components/schemas/DecimalString'
nullable: true
description: Spread as % of best_ask.
bucket:
type: integer
nullable: true
enum:
- 1
- 2
- 3
description: Collector refresh tier.
collected_at:
type: string
format: date-time
nullable: true
updated_at:
type: string
format: date-time
nullable: true
orderbook:
allOf:
- $ref: '#/components/schemas/SteamOrderbook'
nullable: true
required:
- market_hash_name
- currency
- updated_at
ErrorResponse:
type: object
description: Referenced by this document but never defined in it. API Evangelist added this empty placeholder so the document resolves; the shape is unknown and is NOT a claim about the API.
x-ae-placeholder: true
DecimalString:
type: string
description: 'Fixed-point decimal value serialized as a string (preserves precision
across languages). Parse with an arbitrary-precision decimal library;
do **not** parse as a native float.
'
pattern: ^-?\d+(\.\d+)?$
example: '1234.5600'
BaseWrapper:
type: object
description: Envelope fields returned by every `GET /v1/prices/*` response.
properties:
source:
type: string
description: Human-readable marketplace identifier.
requestor:
type: string
format: email
description: Email address associated with the API key making the call.
example: customer@example.com
plan:
type: string
description: Plan of the API key (e.g. `free`, `pro`, `enterprise`).
example: pro
timestamp:
allOf:
- $ref: '#/components/schemas/UpdatedAt'
description: Server time when this response was produced.
required:
- source
- timestamp
SteamOrderbookLevel:
type: object
properties:
price:
allOf:
- $ref: '#/components/schemas/DecimalString'
quantity:
type: integer
example: 2
required:
- price
- quantity
TinyBool:
type: integer
enum:
- 0
- 1
nullable: true
description: Boolean stored as `tinyint(1)`; `0` = false, `1` = true.
example: 0
UpdatedAt:
type: string
format: date-time
description: ISO-8601 UTC timestamp (millisecond precision).
example: '2026-04-21T12:06:35.000Z'
SteamMarketMeta:
type: object
properties:
count:
type: integer
example: 1
currency:
type: string
example: USD
filtered:
type: array
items:
type: string
description: Present when `market_hash_name` filter was applied.
bucket:
type: integer
enum:
- 1
- 2
- 3
description: Present when `bucket` query filter was applied.
Exterior:
type: string
nullable: true
description: 'Exterior (wear) of the skin. Typical values: `Factory New`,
`Minimal Wear`, `Field-Tested`, `Well-Worn`, `Battle-Scarred`.
Casing may vary between sources (e.g. Buff163 uses `"Factory new"`).
'
example: Field-Tested
SteamMarketResponse:
allOf:
- $ref: '#/components/schemas/BaseWrapper'
- type: object
properties:
data:
type: array
items:
$ref: '#/components/schemas/SteamMarketItem'
meta:
$ref: '#/components/schemas/SteamMarketMeta'
source:
type: string
enum:
- Steam Community Market
required:
- data
- meta
- source
securitySchemes:
ApiKeyAuth:
type: apiKey
in: header
name: x-api-key
description: 'API key issued per customer. Send it in the `x-api-key` header on every
request. Every key is limited to 10 requests per second (no daily cap)
and can be endpoint-scoped (ACL). Inactive or expired keys will be rejected
with `401`.
'