Express — 
Build Exchange Rate Alerts and Monitoring, Fast with Express
Monitor exchange rates and trigger email alerts with Express, without writing or maintaining a single line of infrastructure code.
Why over-engineer when you don’t have to? This video shows how to create a live USD to BRL exchange rate monitor using Express by Nexla. Instead of spinning up servers, writing Python scripts, or managing cron jobs, we define the data source, transformation logic, and alert conditions entirely through natural language. See how a complete pipeline can be built in minutes—zero infrastructure, zero maintenance, just results.
Key takeaway: Using Express, you can build a live USD to BRL currency monitor and automated price alerts without writing any code. It fetches daily exchange rates, calculates trends, and sends email alerts when rates reach key thresholds, all in just a few prompts.