If you’re asked for access to your keychain on Mac

When you connect to an app, server, or other item that’s protected by a password, the item tries to retrieve the password from your keychain. Keychain Access requests your permission to provide the password to the app or server.

Choose one of the following options:

Allow Once: Grant access this time only. You are asked again the next time the app or server needs the password.
Always Allow: Let the app or server retrieve the password from your keychain without any further authorization or notice from you.
Deny: Prevent the app or server from retrieving the password from your keychain. You need to enter the password manually.

Helpful?

Keychain Access User Guide

If you’re asked for access to your keychain on Mac