Created as part of a SF ETHGlobal hackathon project.

The Covalent Unified API can be used to pull balances, positions and historical granular transaction data from dozens of blockchain networks. This data enables hundreds of end-user use-cases like wallets, investor dashboards, taxation tools and as-of-yet unknown use-cases.

One Unified API. One Billion Possibilities.

Read more about this API on covalenthq.com.

Developer Resources

API Docs - Use the Covalent API directly from the browser with our API docs Knowledge Base - check out our developer support resources and details on every supported blockchain network.

npm i covalenthq-api

https://api.covalenthq.com/v1/1/address/demo.eth/balances_v2/?quote-currency=USD&format=JSON&nft=false&no-nft-fetch=false&key=ckey_a1857bea207c449a95f55fcd188

import * as CovalentHQ from 'covalenthq-api';

(async () => {
  const covalentHQ = CovalentHQ.createAPI(API_KEY);

  // Get token balances for address
  const balances = await covalentHQ.getTokenBalancesForAddress(address, 1);

  console.log(balances);
})();

• Add full suite of APIs, Class B
• Add more examples
• Add tests, test other chains
• More documentation

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