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Documentation Index

Fetch the complete documentation index at: https://otpless.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

Using the Headless SDK, requests can be easily customized to set a specific expiry, adjust the OTP length, and select a preferred delivery channel such as WhatsApp, SMS, or Viber for phone number authentication.

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Custom Expiry

Headless request can be customized with custom expiry. 
// in seconds
OTPlessSignin.initiate({
            channel: 'PHONE',
            phone: "9999999999",
            countryCode: "+91",
            expiry: "60"
        })

​
Custom OTP length

Headless request can be customized with custom OTP length 4 or 6. 
// only 4 or 6 
OTPlessSignin.initiate({
            channel: 'PHONE',
            phone: "9999999999",
            countryCode: "+91",
            otpLength: 6
        })

​
Custom Delivery Channel

Headless request can be customized with custom Delivery Channel like WHATSAPP, SMS and VIBER. 
// WHATSAPP,SMS and VIBER
 OTPlessSignin.initiate({
            channel: 'PHONE',
            phone: "9999999999",
            countryCode: "+91",
            deliveryChannel: "WHATSAPP"
        })