Use it inside Claude, ChatGPT, Cursor and more.Use it in your AI tools.Set it up
Try on 250 contacts for free
Free tools

Free tools for calling lists.

Small, free tools that answer one question each. They run in your browser, and each one says plainly what it can and can't tell you.

Free toolsFree US phone number format checker.Paste a US phone number to check it's correctly formed and see it in the international format your CRM and API calls expect. Runs in your browser; nothing is sent anywhere.

Know who’ll answer
before you call.

Grade 250 contacts free. No card required, and US phone numbers only.

  • US phone numbers only
  • No card required
  • One credit per checked contact
Check 250 contacts freeOr read the docs