The document discusses building a cryptocurrency trading bot using Node.js that can automatically deposit funds, check balances, set buy prices, buy cryptocurrency, and repeat on a schedule. It describes using the Coinbase API through the GDAX client to programmatically interact with the GDAX exchange. The bot, called Hodler 21, is run as an AWS Lambda function that is triggered on a schedule defined through AWS CloudWatch events. Source code for the bot is provided in a GitHub repository.