Https://api.twilio.com/ sms setting

how I send sms with twilio api in erpnext.

Can you describe the issue in more detail for community members to help you. What I understand is that you want to configure the erpnext system for sending the messages through twilio. I have not done it before either but I guess the URL that will work is https://{AccountSid}:{AuthToken}@api.twilio.com/2010-04-01/Accounts

This link will guide you more Make an HTTP Request to Twilio | Twilio

This should help:

https://erpnext.com/docs/user/manual/en/setting-up/sms-setting