Developer API

Steam Sales History API

Daily-snapshot price history for any Steam item — ideal for charts, portfolio trackers and trend analysis.

Endpoints

All endpoints return JSON, accept the same auth header, and degrade with a normalised error envelope.

GET /steam/api/history

GET /steam/api/items/history

Steam Sales History API — quickstart

Same auth header as every other endpoint we ship. Get an API key from the dashboard and you're querying inside two minutes.

→ Single auth header, JSON response.
→ Rate limits scale with your plan tier.
→ Full schema in the API reference.

API Request

# curl with API key

curl "https://www.steamwebapi.com/steam/api/history?key=$KEY"

# PHP

$res = file_get_contents('https://www.steamwebapi.com/steam/api/history?key=' . $KEY);

$data = json_decode($res, true);

# Node.js

const r = await fetch(`https://www.steamwebapi.com/steam/api/history?key=${KEY}`);

const data = await r.json();

About this API

The Sales History API exposes the per-day price history Steam tracks for every market item. Use it to drive a candle chart on a portfolio dashboard, detect price trends, or backfill a quant model that needs historical Steam reference data.

Filter by date range. Optionally combine with /steam/api/items/history for a POST endpoint that handles bulk lookups.

FAQ

What granularity is the history?

Daily snapshots. One row per day with the price observed at the snapshot time.

How far back does history go?

We keep at least 90 days of daily snapshots for every active item, often much more for popular items.

Can I bulk-fetch history?

Yes — POST to /steam/api/items/history with a list of market_hash_names for batch retrieval.

Start building with the Steam Sales History API

One key, every Steam endpoint.

Get API access Full API reference