[keycloak-user] Generate password reset URL

I want to send Keycloak user reset password email from my web app without using Keycloak SMTP configuration. For that I am trying to generate the reset password link but I am not sure how to generate the code in URL. Are there any API call to generate action code or full reset password URL ? Keycloak generate something like below. I need to generate same. That's the objective. https://server.com/auth/realms/xxx/login-actions/action-token?key=ffdfdfdfd