3c.exchange is an exchange setup by Binance and 3Commas, it has some advantages (no 3Commas subscription needed) and some disadvantages (Only binance, no 3commas portfolios and always at Binance VIP level 0).
It can be used with The Trading Parrot Patreon bots with a little trick if the bot uses the Binance exchange. The link you copy from the Bot Patreon page starts with 3commas.io/, if this is changed to 3c.exchange/ it will be usable from within 3c.exchange.