Secure API Keys with Supabase & Edge Function: Protect Your Keys

In this multi-modal course, you will learn how to professionally hide sensitive API keys to secure your applications through the use of Supabase Edge Functions. Targeted at Flutter and full-stack developers, this course will help you solve a key real-world issue of thick-client access to third-party APIs like Google Maps, Stripe, or OpenAI while safely authenticating the use of the services without exposing keys in client code.
You will learn to:

• Create API proxies that are production ready and secure middleware between your application and external services
• Secure your APIs using CORS policies, rate limits, and request validation
• Implement response caching of your API calls to save money and improve performance
• Manage authentication correctly when your proxy needs user-scollable access to the external service
• Deploy and monitor your proxy functions in Supabase
• Leverage these solutions with Flutter applications

Through practical examples, you'll transform from copying API keys directly into apps to implementing enterprise-grade security patterns.We will talk about pitfalls to avoid, debugging tips, and optimization techniques that senior developers use.
By the end of this course, you will be able to confidently secure any application from API Key leaks while allowing complete functionality - a skill anyone in this security-first world cannot ignore.