Using this API, you can get currency details from CoinMarketCap without an API key, including prices, logos, symbols, etc.
https://api.coinmarketcap.com/data-api/v3/cryptocurrency/listing?start=1&limit=10000&sortBy=market_cap&sortType=desc&convert=USD&cryptoType=all&tagType=all&audited=false
⚠️ Use at your own risk! If you are able to support them, you can purchase an API key from this url: https://pro.coinmarketcap.com/signup/