Try an API request
An API lets software ask another service for information or an action. In Postman, a developer or tester can send a request to an endpoint and inspect the response. For example, they might request a customer record from a test service and check the data or error returned.
A Postman collection groups saved requests so teammates can reuse them, document how an API works, or run checks. An environment holds values such as a server address that can change between test and live systems.
Check what a request will do
Some requests only read information; others create, change, or delete it. Before running a shared collection, check which environment it targets and whether you have permission to use the required credentials. A response shows what happened for that request; broader testing is still needed to know whether the whole feature works.