get the quote for a crypto currency from coinmarketcap in USD

coinquote.sh

#!/bin/bash

# first create an API key at coinmarketcap.com. It is free for personal use. Set it in a variable:
export API_KEY="11111111-1111-1111-1111-111111111111"

# now you can call the API with curl, and extract the result with jq
# for example to get the quote for a crypto currency in USD:
coinquote() {
    curl -s -H "X-CMC_PRO_API_KEY:$API_KEY" -H "Accept:application/json" \
    -d "symbol=$1&convert=USD" \
    -G https://pro-api.coinmarketcap.com/v1/cryptocurrency/quotes/latest \
    | jq -r .data.$1.quote.USD.price
}

# usage examples:
# frank@hal9000:~$ coinquote BTC
# 41565.26702354934
# frank@hal9000:~$ coinquote WPKT
# 0.03267430133033706