Asset mappings for CoinCap, CoinGecko, CryptoCompare and CryptoCurrency Icons. The assets.json is available through MyCrypto's API here.

The assets.json file found in assets/ consists of a key -> value object, where the key is the UUID of an asset, and the value is an object with the following fields:

• coinCapId (string)

  The id field used in the CoinCap API.

• coinGeckoId (string)

  The id field used in the CoinGecko API.

• cryptoCompareId (string)

  The Symbol field used in the CryptoCompare API.

• cryptoCurrencyIconName (string)

  The name of the icon in the CryptoCurrency Icon library.

• dexAgId (string)

  The id used in dexAg's API.

Any of these fields can be undefined, in which case no matching asset was found.

The UUID is generated based on RFC-4122 name-based UUIDs (v5). For tokens, a combination of the chain ID and token contract is used (${chainId}-${contractAddress}). For other assets, only the chain ID is used.

Currently, the following assets are supported:

• Ethereum
• Ethereum Classic
• ERC-20 tokens on the Ethereum network

To update the assets.json file, simply run:

$ yarn build

And commit the new file to GitHub. The new file is automatically deployed.

You can use the token-uuid script to get the UUID of a token:

$ yarn token-uuid <contractAddress> <chainId>