user59017: I'm looking for a well documented, easy to use API that provides data on the majority of cryptocurrencies. That data should include the 1 hr, 24hr, and 7 day price changes, as well as the entire history of the volume, and price for each crypto. I've looked into some APIs but none have provided this sort of comprehensive information. There are many great sites that have access to this sort of data, so it must be out there. Any help is appreciated! Thanks!

user80830: CryptoCompare API is the most comprehensive free api that I can find of.
Links: 

https://www.cryptocompare.com/api/
https://min-api.cryptocompare.com/


user82865: check out cryptoquote.io
this real-time data feed provides access to real-time streaming price data from the cash exchanges and liquidity providers for institutional order flow as well as historical database, market metrics, logo API and widgets. 
Built by my team

user84590: You can check out the following API. Although it's mainly used to get standardized coin symbols across exchanges, you also get additional coin data in the response:

https://CryptoStandardizer.com


user90044: You can try CoinGecko api, they provide like comprehensive data. More than you will ever need. https://www.coingecko.com/api/docs/v3

user23203: Take a look at the CoinAPI data provider, which have full coverage of the cryptocurrency markets and provide data via REST, WebSocket and FIX protocols.

user76830: You can check out Coinograph cryptocurrency API. It provides raw trade data, candles, orderbook and ticker.
Disclaimer: I've built the product.

user74832: If you want something simple and fast with a huge amount of coins try https://chasing-coins.com/api/ 

user87216: Cofounder & developer here, you can check our site coinpaprika.com API

user59331: Most exchanges offer API solutions for market data. Here are some examples:

GDAX
Bittrex
Kraken
WAVES DEX

CryptoCompare has an API that aggregates data from many exchanges, and they also offer many query parameters. Link: CryptoCompareAPI
Additionally, many block explorers provide APIs for blockchain account information.
This ZChain Playlist shows how to use PowerShell to query the ZChain ZCash block explorer API. 

59017: <p>I'm looking for a well documented, easy to use API that provides data on the majority of cryptocurrencies. That data should include the 1 hr, 24hr, and 7 day price changes, as well as the entire history of the volume, and price for each crypto. I've looked into some APIs but none have provided this sort of comprehensive information. There are many great sites that have access to this sort of data, so it must be out there. Any help is appreciated! Thanks!</p>
 80830: <p>CryptoCompare API is the most comprehensive free api that I can find of.</p>

<p>Links: </p>

<ol>
<li><a href="https://www.cryptocompare.com/api/" rel="nofollow noreferrer">https://www.cryptocompare.com/api/</a></li>
<li><a href="https://min-api.cryptocompare.com/" rel="nofollow noreferrer">https://min-api.cryptocompare.com/</a></li>
</ol>
 82865: <p>check out cryptoquote.io</p>

<p>this real-time data feed provides access to real-time streaming price data from the cash exchanges and liquidity providers for institutional order flow as well as historical database, market metrics, logo API and widgets. </p>

<p>Built by my team</p>
 84590: <p>You can check out the following API. Although it's mainly used to get standardized coin symbols across exchanges, you also get additional coin data in the response:</p>

<ul>
<li><a href="https://cryptostandardizer.com" rel="nofollow noreferrer">https://CryptoStandardizer.com</a></li>
</ul>
 90044: <p>You can try CoinGecko api, they provide like comprehensive data. More than you will ever need. <a href="https://www.coingecko.com/api/docs/v3" rel="nofollow noreferrer">https://www.coingecko.com/api/docs/v3</a></p>
 23203: <p>Take a look at the <a href="https://www.coinapi.io" rel="nofollow noreferrer">CoinAPI</a> data provider, which have full coverage of the cryptocurrency markets and provide data via REST, WebSocket and FIX protocols.</p>
 76830: <p>You can check out <a href="http://coinograph.io" rel="nofollow noreferrer">Coinograph</a> cryptocurrency API. It provides raw trade data, candles, orderbook and ticker.</p>

<p>Disclaimer: I've built the product.</p>
 74832: <p>If you want something simple and fast with a huge amount of coins try <a href="https://chasing-coins.com/api/" rel="nofollow noreferrer">https://chasing-coins.com/api/</a> </p>
 87216: <p>Cofounder &amp; developer here, you can check our site <a href="https://api.coinpaprika.com/" rel="nofollow noreferrer">coinpaprika.com API</a></p>
 59331: <p>Most exchanges offer API solutions for market data. Here are some examples:</p>

<ol>
<li><a href="https://docs.gdax.com/#api" rel="noreferrer">GDAX</a></li>
<li><a href="https://bittrex.com/home/api" rel="noreferrer">Bittrex</a></li>
<li><a href="https://www.kraken.com/help/api" rel="noreferrer">Kraken</a></li>
<li><a href="http://marketdata.wavesplatform.com/" rel="noreferrer">WAVES DEX</a></li>
</ol>

<p>CryptoCompare has an API that aggregates data from many exchanges, and they also offer many query parameters. Link: <a href="https://www.cryptocompare.com/api" rel="noreferrer">CryptoCompareAPI</a></p>

<p>Additionally, many block explorers provide APIs for blockchain account information.<br>
This <a href="https://www.youtube.com/playlist?list=PLZbbT5o_s2xqlYVdBKoKDOXsN4su8iqrU" rel="noreferrer">ZChain Playlist</a> shows how to use PowerShell to query the ZChain ZCash block explorer API. </p>
