Quickstart
Send your first OTP in under 5 minutes
Authentication
Get your API key and authenticate requests
API Reference
Explore all endpoints with request and response examples
Webhooks
Get notified instantly when an OTP is verified
How it works
OTP.ID follows a simple request → verify flow. You call the API to create an OTP transaction, the platform delivers the code through your chosen channel, and then your app calls the verify endpoint when the user submits their code.1
Get your API key
Sign in to the OTP.ID dashboard and copy your API key from the settings page.
2
Send an OTP
Call
POST /v3/request with a channel and destination. OTP.ID generates and delivers the code automatically.3
Verify the code
When the user enters the code, call
POST /v3/verify with the otp_id and the code they provided.4
React to the result
Check
data.verified in the response — true means success. Set up a webhook to receive an async notification as well.Explore by topic
Channels
WhatsApp, SMS, Email, Missed Call, WhatsApp Inbound
OTP Lifecycle
Status flow from creation to verification
Billing
Prepaid balance and per-transaction pricing
Idempotency
Safe retries with external_id
Error Codes
Full catalogue of API error codes
Rate Limits
Per-key and per-destination limits