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Use Developer settings to connect your server to Kyren Pay.

API keys

Use API keys only from your server. Do not expose them in frontend JavaScript, mobile apps, logs, screenshots, or public repositories. If you regenerate an API key, update every server environment that calls Kyren Pay. The previous key stops working after regeneration.

Webhooks

Configure a Webhook URL that Kyren Pay can reach over HTTPS. Your server should verify the Webhook signature before trusting the event body.

IP allowlist

If IP allowlist is enabled for your merchant account, make sure every server that calls Kyren Pay is included. Missing server IPs can cause authentication or authorization failures.