Cashfree uses API keys to allow access to the API. Once you have signed up at our merchant site, you will be able to see your AppId and SecretKey.
Cashfree expects API key to be included in all API requests to the server. Use the endpoint /api/v1/credentials/verify to verify your credentials.
To use the Payout API, the corresponding IP address should be whitelisted from your Cashfree Dashboard
Payouts Dashboard >> Access Control >> IP Whitelist
For more details, IP Whitelist - Payouts