Inbound Line
A 24/7 voice agent that books, qualifies, and routes calls — for service businesses that can’t miss a ring.
The problem
Service businesses — plumbers, dentists, dog groomers — lose 40–60% of inbound calls outside office hours. Voicemail completion rates sit below 20%. Every missed call is a missed booking worth £50–£500.
The approach
We built a voice agent on Twilio + Anthropic that answers within two rings, asks qualifying questions configured per business, and books directly into the owner’s calendar via Cal.com. Urgent calls route live. All others get a summary SMS within 30 seconds of hang-up. Supabase stores call transcripts and lead scores.
Outcomes
- Average answer time under 2 seconds
- Lead qualification accuracy validated at 91%
- Zero missed calls during out-of-hours testing
Retrospective
The hardest part was making the agent sound unhurried. Early versions answered too fast and talked too much. The final version pauses naturally, asks one question at a time, and knows when to stop selling and just book the slot.