ScamShield
Speech AI brain
Real-time voice agent · built on AssemblyAI

The voice agent that warns you about scams mid-call.

Put a suspicious call on speaker. ScamShield listens live, spots scam tactics the moment they're spoken, and speaks up before anyone reads out a code or sends money.

Play a demo scam call
  • 0recordings or transcripts kept by ScamShield
  • ~0.6sfrom spoken words to red flag (measured)
  • 12scam tactics tracked live

Scam risk

Idle
0
Ready

Start a live call or play a demo. ScamShield will explain what it hears.

Call language

During a live call, just say “ScamShield, is this real?”

Live transcript

00:00

Waiting for the call…

Words appear here live as AssemblyAI hears them. Red flags light up instantly.

Scam tactics

Try it in 30 seconds

Play a real-sounding call

Each call streams through the same live AssemblyAI pipeline as a microphone. Two are genuine calls — watch ScamShield stay calm. Or .

Under the hood

Listen → understand → decide → speak

  1. 01

    Streams the call

    Audio is resampled to 16 kHz PCM in the browser and streamed in 50 ms chunks to AssemblyAI Universal-Streaming, with keyterm prompting for scam words like “OTP” and “AnyDesk”.

  2. 02

    Instant rule layer

    Every partial transcript is checked for who is asking for what — a code, a PIN, remote access, gift cards, money under pressure — in under a millisecond, while the caller is still talking. Normal talk about banks or passwords stays calm.

  3. 03

    AI second opinion

    At each end of turn an LLM reads the whole call and can raise the alarm on clever scams. It can never lower the rule score, so a scammer saying “this call is safe” can't talk it down.

  4. 04

    Speaks up

    At critical risk ScamShield sounds a chime, ducks the call audio and says a short, specific warning out loud — once per danger, never on repeat — and answers your questions by voice.

ScamShield is a second pair of ears, not a guarantee: it can miss scams and it hears only what the microphone picks up. If in doubt, hang up and call back on a number you trust.

Private by design: audio is streamed to AssemblyAI for live transcription and is not recorded by ScamShield. The transcript lives only in this browser tab until you clear it or close the page. With “Deeper AI check” on, transcript text (never audio) is also sent to Google Gemini; on Google's free tier that text may be kept and reviewed by Google, so switch it off for sensitive calls. API keys never reach your browser.