Sidetone answers and places real phone calls with AI that callers can't clock — booking jobs, qualifying leads, and transferring when it matters.
No hold music, no voicemail black hole. The conversation just starts — at 2 AM, during the lunch rush, always.
Checks real availability, books the slot, confirms by SMS before the caller hangs up.
Outcomes, transcripts, and revenue captured overnight — waiting with your coffee.
Callers get a warm voice that listens, doesn't talk over them, and actually books the job. You get every outcome in the morning.
We tell callers it's an AI. They stay on the line anyway — that's the product.
to answer.
Forward your existing line or port it in. Nothing changes for callers.
Services, hours, booking rules. It learns your voice — literally and figuratively.
Call your own number. Interrupt it. Try to trip it up. That's the fun part.
Start with after-hours if you're cautious. Most people don't stay cautious long.
our callers have no idea. sidetone sounds so natural, 8 out of 10 think they're talking to a real person — and we tell them afterwards.
it answered 42 after-hours calls last month and booked $4,300 of work while we slept.
since early access we cut missed calls to zero and captured 23% more bookings. like an extra teammate who never sleeps.
my front desk finally does patient care instead of phone tag. scheduling complaints just… stopped.
it handles the friday rush while every human hand is carrying plates. 31 covers booked, zero rings missed.
placeholder voices — real quotes the day we have real customers
One request places a real call, handles the conversation, and returns the outcome as structured data. Ships as an MCP server — your agents plug in with one config line.
$ curl -X POST api.sidetone.ai/v1/calls \
-d '{ "to": "+14155550134",
"objective": "book a repair visit" }'
→ 201 {
"result": "booked",
"when": "Tue 9:30 AM",
"voice_to_voice_ms": 612
}
AI receptionist & call routing, live transcripts, calendar integration.
Custom voice & knowledge base, analytics and call insights, priority support.
SLA, security review, SSO, custom integrations.
Interrupt it mid-sentence. Mumble. Ask something weird. Try to catch it being a robot — that's the whole test.