Get started

The voice firewall listens to a live call and tells you, while the call is up, how likely the caller is a scammer. It transcribes the caller, scores the call as it runs, and sends you an event each time the score changes. When the call ends it runs one full analysis on the whole transcript and stores the result.

You bring the call. The filter works with a switch, a PBX, an SBC, a media server, or a Twilio or Telnyx number. You do not install anything.

Pick your path

There are three things you can do. They take different amounts of time.

Path 1: score a transcript or a recording

One HTTP request. Send text or audio and get a verdict back. About 5 minutes. Use it to test your key and to score calls after the fact.

Go to Score a transcript or a recording.

Path 2: score live calls from your switch

Your switch streams the caller's audio to a WebSocket and gets verdict events while the call is up. About one hour on FreeSWITCH. Half a day with a bridge on Asterisk or Kamailio. About 10 minutes on a Twilio or Telnyx number.

Go to What you get.

Path 3: hand scam calls to a persona

The honeypot answers the call as a vulnerable-sounding person, keeps the scammer busy, records what they reveal, and files the number. One setting on the CallerAPI SIP firewall, or one INVITE from your switch.

Go to Hand a call over.

What you need before any path

Your API key from the dashboard. It is the same key as the rest of the CallerAPI API.

Credits on the account. See Limits and thresholds for prices.

For path 2, a component that can open a WebSocket and stream audio. Before you start lists what to check.

Where to go when something breaks

Errors lists what you see and what causes it. Read it before you open a support ticket.

Pick your path#

Path 1: score a transcript or a recording#

Path 2: score live calls from your switch#

Path 3: hand scam calls to a persona#