# Preparation and tools

# Authentication data

To start working with Mandarin, you need to register, get your account activated by your client manager and follow the link to your personal account (opens new window).

To get MID and Secret in your Personal Account follow the instructions (opens new window)

IMPORTANT!

Please note that the secret key should not leave your server in any form. If it is sent as part of HTML or used in JavaScript in any way, it is a security issue and gives an attacker the opportunity to make calls to the payment system on your behalf.

For additional security, for each MID you can enable the option to accept requests only from IP addresses from the white list (opens new window) (white list). The feature is enabled upon request to Support Service (opens new window).

# Monitoring requests and notifications (HeartBeat)

HeartBeat (opens new window) - a tool for monitoring payment transactions and asynchronous notifications (callbacks). Standard authorization is used to log in.

Possibilities:

For more information, see the instructions (opens new window)