Phone number validation

Twilio has a nice API you can call if you’re able to make API calls in your app. You still have to convert the input phone number into E.164 or national format though.

Hey Jake,
You’re right most forms let users enter anything in the phone field, including letters.

To fix this, I set up a no-code flow using Zapier + OpenAI + Numverify. It formats and validates phone numbers after the form is submitted.

Here’s how the flow works:

Step 1: Format the number with OpenAI

Clean up and convert the number to international format using the country selected in the form.

Step 2: Validate using Numverify

Check if the number is real, valid, and identify its country and carrier.

Step 3: Connect the steps

Feed the cleaned number from OpenAI into Numverify.