API Documentation

Free crypto data API for developers - No API key required

Getting Started

Base URL: https://opencryptodata.com/api

All endpoints return JSON. No authentication required.

Coins

GET /api/coins

Get all coins with aggregated prices from multiple exchanges.

Query Parameters

  • search - Filter by symbol or name
  • limit - Max results (default: 100)
  • offset - Pagination offset

Example

curl https://opencryptodata.com/api/coins?limit=10
GET /api/coins/:symbol

Get detailed data for a single coin.

Example

curl https://opencryptodata.com/api/coins/BTC
GET /api/coins/:symbol/history

Get price history for a coin.

Query Parameters

  • period - Time period: 1h, 24h, 7d, 30d, 1y, all (default: 7d)

Example

curl https://opencryptodata.com/api/coins/ETH/history?period=24h

Market Data

GET /api/global

Get global market statistics.

GET /api/trending

Get trending coins (top gainers, losers, most traded).

GET /api/exchanges

Get all exchanges with statistics.

GET /api/fear-greed

Get the current Fear & Greed Index.

DeFi

GET /api/defi/overview

Get DeFi overview stats (total TVL, top protocols).

GET /api/defi/protocols

Get top DeFi protocols by TVL.

Query Parameters

  • limit - Max results (default: 20)
GET /api/defi/chains

Get TVL by blockchain.

Data Downloads

GET /api/data/archives

List all available data archives (CSV files).

GET /api/data/download/:filename

Download a specific archive file (gzip compressed CSV).

Other Endpoints

GET /api/news

Get crypto news articles.

GET /api/exchange-rates

Get fiat exchange rates (base USD).

GET /api/sparklines

Get sparkline data for multiple coins.

Query Parameters

  • symbols - Comma-separated list of symbols (required)