Callbacks

Fondy uses callbacks to notify merchants when a payment is completed. To ensure callback notifications are received successfully, follow the instructions presented on this page.

Allow Fondy’s Server IP Addresses

Update your firewall settings to allow traffic from the following IP addresses:

• 54.154.216.60

This ensures that callback responses from Fondy can reach your server.

Processing Callback Responses

A callback is considered successfully processed if your server responds with an HTTP 200 OK status. If a different status code is returned, Fondy will retry sending the callback at the following intervals (in seconds):

• 2 seconds
• 60 seconds
• 300 seconds
• 600 seconds
• 3600 seconds
• 86400 seconds (24 hours)

Ensure your system is configured to handle retries appropriately.

Callback Request Details

Fondy sends callback requests with the following User-Agent header:

Mozilla/5.0 (X11; Linux x86_64; Twisted) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.108 Safari/537.36