> ## Documentation Index
> Fetch the complete documentation index at: https://docs.botcadence.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Verify phone (OTP)

> Confirm the customer owns a phone number with a one-time SMS code

**Verify phone (OTP)** sends a one-time SMS code and checks the code the customer returns. OTP simply means “one-time password.”

You do not pick a project Twilio send number in the Tools tab. The platform sends the verification SMS.

## Enable

<Steps>
  <Step title="Open Tools">
    Open the workflow, select an **Agent**, **Supervisor**, or **Task**, then open **Tools**.
  </Step>

  <Step title="Turn it on">
    Under **Verification**, enable **Verify phone (OTP)**. There is no extra configure dialog.
  </Step>
</Steps>

<Check>
  In a test, provide a phone you control, request a code, and complete verification.
</Check>

<Note>
  This confirms ownership of a number. It does not send arbitrary SMS. For conversation texts, use [Send SMS](/docs/build/workflows/tools/send-sms).
</Note>