# Didit Phone OTP Send

> Didit Phone OTP Send is a paid API for AI agents from Didit API at mpp.orthogonal.com, paid per call via MPP, $0.3/call, status unknown (last checked 2026-10-10).

Sends a one-time verification code (OTP) via SMS to a specified phone number for identity verification purposes.

## Facts

- Endpoint: POST https://mpp.orthogonal.com/didit/v3/phone/send?utm_source=zero.xyz
- Price: $0.3/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Provider: Didit API
- Docs: https://docs.didit.me
- Website: https://didit.me
- Tags: identity, verification, kyc, data
- Canonical page: https://www.zero.xyz/c/didit-api-didit-phone-otp-send-2e8081f9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WgQwqIW40tjnLOusUHaPb

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 didit-api-didit-phone-otp-send-2e8081f9 -d '<json body>'
```

Example prompt: Send a one-time verification code via SMS to +1-555-867-5309 so the user can verify their phone number for identity confirmation.

## When to prefer this

Choose this endpoint when you need to verify a user's phone number as part of an identity or KYC workflow, particularly when integrated with the Didit identity platform. Prefer this over generic SMS APIs when the OTP is part of a broader identity verification pipeline that may include AML screening or database validation.

## Known failure modes

- Invalid or malformed phone number format returns an error
- Phone number not reachable or unsupported region
- Rate limiting if too many OTPs sent to the same number in a short period
- Network or SMS gateway delivery failure
- Authentication/authorization failure if API credentials are invalid

## How this service works

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

## Output

A confirmation that the OTP SMS was dispatched to the provided phone number, typically including a status or delivery confirmation identifier.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/didit-api-didit-phone-otp-send-2e8081f9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mpp.orthogonal.com](https://www.zero.xyz/host/mpp.orthogonal.com/llms.txt)