Web APIs

Web APIs are the main subject of Brevvie Python + AI — Section 4: APIs, Postman & Calling the Web. The source defines an API as a contract between software systems: send a request in an agreed shape, receive a response in an agreed shape.

Core points

• most developer-facing APIs are HTTP-based
• the common pattern is request in, JSON out
• modern software is often glue code between many APIs
• each API has its own response shape and auth rules

Why it matters

This is the bridge from local Python exercises to software that talks to real external systems.