Wipple SMS Verify OTP API for validation of Phone numbers.
Pricing
To Global: 100 credits for each SMS sending.

[How to send SMS OTP ?]
1 . Send Verification code
To send OTP via SMS , POST to /send endpoint with these JSON body.

{
phone_number : "Phone number to send verification code.  E164 format phone number excluding the leading + . like 10000000000"
}

2 . Check Verification code
To check OTP , GET from /verify endpoint with these query parameter.

/verify?phone_number={Phone number you sent OTP}&verification_code={OTP sent to SmartPhone}

[What is E164 format excluding the leading +?]
E164 is International format of Phone number.
Do not include spaces or hyphens.
Only + and numbers are allowed
example in US: 10000000000