Simple definition
The HTTP GET method retrieves a representation of a resource and is designed to be safe and idempotent.
Purpose and use
GET requests a resource representation, such as a page or data from an API endpoint.
How does it work?
Its semantics are safe and idempotent: the client does not request a business-state change. The server may still record access logs.
Example and verification
Verify that a viewing link cannot trigger deletion, payment or another sensitive operation, even for an authenticated user.
Points to watch
Secrets in a URL can appear in histories or logs. GET should not bypass protections intended for state-changing operations.
In short
GET expresses retrieval intent; access control and appropriate caching policy are still required.