Observed arrival · 2026-11-15
ByeBeep: voicemail detection with a human-safe fallback
A streaming API identifies whether a call was answered by a person or a machine, with integrations for common telephony systems.
- For
- Developers building or operating automated calling systems
- Worth noticing
- Its reported test covered 948 calls; the page says none of 518 people were classified as machines.
Field notes
The API accepts live call audio over a WebSocket or a recording by POST, then returns a verdict during the call. The page describes a conservative fallback: uncertain results are treated as people, while known call-screeners can be held until the five-second limit. It lists direct integrations for VICIdial, Asterisk, FreeSWITCH, Twilio, SignalWire, and Telnyx; the reported evaluation used 948 recorded calls and labels that were usually inherited from the dialer's existing detector.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue