# users.getByUsername Get user by username Returns a user selected by exact username after applying READ_USER authority. includeDeleted permits an authorized caller to inspect a permanent tombstone; it does not grant additional authority. Missing and unauthorized matches both return 404 so this guessable identifier cannot reveal whether a user exists. ```java UserResponse getByUsername(String username, java.util.Map query) ``` [users](../users.md) · [Java](../../java.md)