Didit Phone Verification API

Overview

Two-step phone verification via one-time code:

1. Send a verification code to a phone number
2. Check the code the user provides

Key constraints:

• Code expires after 5 minutes
• Maximum 3 verification attempts per code (then must resend)
• Maximum 2 resend requests within 24 hours
• Rate limit: 4 sends per hour per phone number
• Phone must be in E.164 format (e.g. +14155552671)
• You must call Send before Check

Delivery channels: SMS (default fallback), WhatsApp, Telegram, voice call. Falls back to SMS if preferred channel unavailable.