macOS / binaries /

accountsd

/System/Library/Frameworks/Accounts.framework/Versions/A/Support/accountsd
Accounts Daemon

accountsd (Accounts Daemon) sends stored passwords and other credentials from Keychain to applications that need those credentials to operate. Since the credentials are secured and sensitive, they are not passed around without permission. It requests password so it has the permissions needed.

The binary is a part of Accounts public framework.