# x402.orth.sh Phone Verification Code Sender

> x402.orth.sh Phone Verification Code Sender is a paid API for AI agents from x402.orth.sh, paid per call via x402, $0.3/call, status unknown (last checked 2026-10-10).

Sends a one-time verification code (OTP) to a phone number via SMS, WhatsApp, Telegram, or voice call for user authentication.

## Facts

- Endpoint: POST https://x402.orth.sh/didit/v3/phone/send?utm_source=zero.xyz
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-orth-sh-phone-verification-code-sender-5cefaeb2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cltl-zBc8NUZD3sr_idAp

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-orth-sh-phone-verification-code-sender-5cefaeb2 -d '<json body>'
```

Example prompt: Send a 6-digit one-time verification code to +14155552671 via WhatsApp, tracking it under vendor session ID 'user-abc-123'.

## When to prefer this

Use this endpoint when you need to send a one-time verification code to a phone number as part of a user authentication or onboarding flow, especially when you need multi-channel flexibility (WhatsApp, SMS, Telegram, or voice) and built-in fraud signal support. It is particularly useful in agentic workflows where you want to verify user identity before proceeding, and when you need per-channel control and locale-aware OTP delivery backed by Didit's infrastructure.

## Known failure modes

- Invalid phone number format (not E.164) — rejected with validation error
- Unsupported locale or channel combination — error response
- Rate limiting if too many codes sent to the same number in a short period
- Carrier or channel delivery failure — message not delivered
- Invalid code_size value outside 4-8 range — input error
- Payment failure ($0.30 USDC not available) — 402 response before message is sent

## How this service works

Send a one-time verification code to a phone number.

## Output

Returns a confirmation that the OTP has been dispatched to the specified phone number via the chosen channel. May include a session or reference ID for correlating the subsequent verification step.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "options": {
   "type": "object",
   "description": "Options object with code_size (4-8, default 6), locale (e.g. en-US), preferred_channel (sms/whatsapp/telegram/voice, default whatsapp)"
  },
  "signals": {
   "type": "object",
   "description": "Fraud detection signals: ip, device_id, device_platform (android/ios/ipados/tvos/web), device_model, os_version, app_version, user_agent"
  },
  "vendor_data": {
   "type": "string",
   "description": "Unique identifier for vendor/user (UUID or email) for session tracking"
  },
  "phone_number": {
   "type": "string",
   "description": "Phone number in E.164 format (e.g. +14155552671)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-orth-sh-phone-verification-code-sender-5cefaeb2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.orth.sh](https://www.zero.xyz/host/x402.orth.sh/llms.txt)