API Keys
API keys are unique identifiers used to authenticate and authorize access to APIs (Application Programming Interfaces). They serve as a simple form of authentication, allowing API providers to track usage, enforce rate limits, and control access to their services. Developers include API keys in requests, typically as headers or query parameters, to prove their identity to the API server.
Developers should learn about API keys when building applications that integrate with third-party services like Google Maps, Stripe, or Twitter, as these often require API keys for access. They are essential for implementing basic security and access control in APIs, helping prevent unauthorized use and enabling monitoring of API consumption. Understanding API keys is crucial for both consuming external APIs and securing your own APIs in simple scenarios.