SMS OTP API
Send one-time passwords for signup, login, recovery, checkout and phone verification.
See API example →Add SMS OTP, TOTP/2FA, transactional email, SMS notifications and signup notifications to your website, mobile app or SaaS product with straightforward REST APIs.
Connect authentication, signup verification and transactional communication to your applications through one developer-focused API platform.
Send one-time passwords for signup, login, recovery, checkout and phone verification.
See API example →Support authenticator-app based security with time-based one-time passwords.
Explore TOTP →Deliver transactional alerts, reminders, account events and application notifications.
Explore notifications →Connect application events to email notifications for onboarding and account activity.
Explore Email API →Use your VCNC API key from the client dashboard and connect verification or notification workflows to your existing application.
curl -X POST https://chatapp.vcnclgatd.site/api/v1/otp/send.php -H "Authorization: Bearer YOUR_API_KEY" -H "Content-Type: application/json" -d '{"phone":"+923001234567"}'Access the dashboard and obtain credentials for API requests.
Choose your channel and send the OTP or notification request.
Submit the user response and continue your application workflow.
Keep implementation simple: authenticate the request, send the challenge, then verify the code entered by the user.
Create a client account, access your dashboard and obtain the credentials required for API requests.
Choose your channel and send an OTP to the destination supplied by your application.
Submit the code entered by the user and continue your signup, login, transaction or recovery workflow.
Select a VCNC service to view verified plans, usage limits and pricing from your active database configuration.
Starter OTP API plan for small production applications.
High-volume OTP API plan for growing applications.
Enterprise OTP API plan for high-volume production applications.
Business OTP API plan for growing production applications.
Starter OTP API plan for small production applications.
Business OTP API plan for growing production applications.
High-volume OTP API plan for growing applications.
Enterprise OTP API plan for high-volume production applications.
Business OTP API plan for growing production applications.
High-volume OTP API plan for growing applications.
Enterprise OTP API plan for high-volume production applications.
TOTP authentication for growing applications and teams.
Starter TOTP authenticator plan for applications requiring basic authentication.
Advanced TOTP authentication for high-volume applications.
Enterprise TOTP authentication for large-scale applications.
TOTP authentication for growing applications and teams.
Starter TOTP authenticator plan for applications requiring basic authentication.
Advanced TOTP authentication for high-volume applications.
Enterprise TOTP authentication for large-scale applications.
TOTP authentication for growing applications and teams.
Starter TOTP authenticator plan for applications requiring basic authentication.
Advanced TOTP authentication for high-volume applications.
Enterprise TOTP authentication for large-scale applications.
Automated SMS and email notifications for newly registered customers. Send welcome and account confirmation notifications directly from your website using the VCNC Notifications API.
Starter SMS and email notification plan for small applications.
Growth notification plan for applications with increasing SMS and email volume.
Business notification plan for production applications with higher SMS and email volume.
Advanced SMS and email notifications for high-volume applications.
Enterprise notification capacity for large-scale applications.
Starter SMS and email notification plan for small applications.
Growth notification plan for applications with increasing SMS and email volume.
Business notification plan for production applications with higher SMS and email volume.
Advanced SMS and email notifications for high-volume applications.
Enterprise notification capacity for large-scale applications.
Starter SMS and email notification plan for small applications.
Growth notification plan for applications with increasing SMS and email volume.
Business notification plan for production applications with higher SMS and email volume.
Advanced SMS and email notifications for high-volume applications.
Enterprise notification capacity for large-scale applications.
Automatically notify newly registered customers by SMS and email using one simple API request.
Automatically notify newly registered customers by SMS and email using one simple API request.
Welcome Email & Message API with monthly email and SMS messaging.
Higher-volume Welcome Email & Message API for growing applications.
High-volume Welcome Email & Message API for production applications.
Welcome Email & Message API with monthly email and SMS messaging.
Higher-volume Welcome Email & Message API for growing applications.
High-volume Welcome Email & Message API for production applications.
Welcome Email & Message API with monthly email and SMS messaging.
Higher-volume Welcome Email & Message API for growing applications.
High-volume Welcome Email & Message API for production applications.
Connect authentication, signup verification and transactional communication through one VCNC API platform.
Send verification codes for registration, login, recovery and sensitive actions.
Add time-based one-time passwords for protected accounts and admin access.
Send transactional alerts, reminders, account events and application notifications.
Connect onboarding, verification, account activity and customer communication to email.
Use YourAuth to add secure account access, verification, authenticator-based two-factor authentication, browser push notifications, newsletters and contact forms to your website or application. Create a developer account, choose an available subscription, and manage your services from the YourAuth dashboard.
Integrate account registration, secure login, forgot-password and reset-password flows through the YourAuth authentication APIs.
Get started →Verify email addresses and phone numbers using expiring, single-use one-time passwords with configured delivery providers.
Explore subscriptions →Add authenticator-app verification, QR-code enrollment and additional account protection.
Explore subscriptions →Send browser notifications using standard Web Push and VAPID keys without requiring a Firebase service-account file.
Explore subscriptions →Build consent-based subscriber lists and manage newsletter campaigns with subscribe and unsubscribe workflows.
Explore subscriptions →Accept validated contact-form submissions through an API, with spam protection and optional email notifications.
Explore subscriptions →Create an account or sign in to view available subscription plans and continue to secure checkout.
Answers to common questions about using VCNC APIs.
VCNC APIs are designed for application verification, authenticator-based security, signup workflows and transactional SMS or email notifications.
Create a client account, access the dashboard and use the available service and package workflow to obtain API credentials for your approved service.
Yes. The API model is intended to connect with existing websites, mobile applications and SaaS products using server-side API requests.
The packages section displays active services and available billing cycles from the configured VCNC plans.
Available services are presented separately in the package selector, allowing your account to use the services available to it.
Start with the free plan, explore the API and scale into the services your application needs.