Three steps to verifying customers.

Create an account, send a verification code to a real phone number, then configure the sender channels your users will see.

From sign-up to first verified user in an afternoon.

Follow these three steps and you'll have OTP verification running across SMS, voice, and email.

  1. 01

    Sign up for Bird.

    Create your account and get an API key. The free tier includes enough volume to build and test your integration before you commit.

  2. 02

    Verify your first customer.

    Send a one-time passcode and check the result with two API calls. Works over SMS, voice, WhatsApp, or email with no code change. Read the quickstart →

  3. 03

    Configure your senders.

    Choose which channels to use, set fallback order, and customize your sender ID or email address. Most configurations take effect immediately. Senders guide →

Fraud-resistant verification, any channel.

One API for OTP, 2FA, and passwordless login across SMS, voice, WhatsApp, and email. Sign up and verify your first user in under five minutes.

Sign up for BirdExplore the Verify platform

Start with one channel.
Add the others when you're ready.

A test API key is yours immediately. Production unlocks when you add a payment method and verify a sender.

Get startedRead docs

Using Claude Code, Cursor, or Codex? Copy a setup prompt and your agent installs the Bird CLI and skills for you. Pick yours:

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