---
updatedAt: 2026-06-10T23:35:00.000Z
agentTools:
projectIndex: https://docs.zerohash.com/llms.txt
---
# External Market Data
The Market Data API gives you real-time pricing, historical price history, and crypto news for the assets supported on the zerohash platform. Use it to power price tickers, charts, asset detail pages, and in-app news feeds - without standing up your own market data pipeline.
All endpoints are read-only (`GET`), live under the `/market_data/` path, and use standard zerohash API-key authentication.
### **Pricing & market stats**
* **Symbol Data** : A live snapshot for a trading pair: latest price, 24-hour / daily / hourly highs, lows, and changes, trading volume, market cap, and circulating supply. Ideal for tickers and asset overview pages.
* **OHLCV** : Historical open / high / low / close / volume candles for a pair, at minute, hourly, or daily granularity. Use it to render charts and run analysis.
### **News**
* **Latest News** — A feed of crypto news articles, filterable by source, category, language, and recency. Drop a relevant news stream into any asset or market view.
* **News Feeds** — The list of available news sources, so you can build source filters.
* **News Categories** — The list of available categories (e.g. by asset), so you can build category filters.
###
Before you start
* **Authentication** — Every request must be signed with your API key (`X-SCX-API-KEY`) plus a `Signature` and `Timestamp`.
* **Access** — Market Data must be enabled for your API key. If you receive a `403`, reach out to your zerohash contact to have it turned on.
* **Trading pairs** — Pricing endpoints take an `underlying` asset (e.g. `BTC`) and a `quoted_currency` (e.g. `USD`), and support the assets enabled for liquidity on your account.
### **Integration Notes**
* **Polling Frequency:** Since this is a REST-only service, please ensure your integration respects the documented rate limits when fetching latest prices.
* **Enablement:** These endpoints are not active by default. If you need these enabled for your platform, please contact your **Integration Support Agent**.