Pick a number.
Choose your area code and pick the number you like. It comes with its own email address too: yourname@bot.cosvoice.com.
Pick a number, save the contact, start talking. Here is what happens after that.
Choose your area code and pick the number you like. It comes with its own email address too: yourname@bot.cosvoice.com.
Name it whatever you like. It knows your mobile number, so when you call, it knows it's you and takes instructions.
Call it. Text it. Or ask your Grok Bot to make a call for you. After each call, the written summary lands in your inbox.
Your Chief of Staff lives on your computer. CosVoice gives it a phone number, an email address, and a desk that keeps notes. Save the number as a contact, write to the address, and the same assistant is on the phone and in the mail.
You call it. It calls for you. It answers when you can't. "Book us a table Friday at 7:30," and your Bot calls the restaurant and books it under your name. Forward the calls you miss, and when the contractor calls back it asks what you would ask: the price, what's included, when they can start.
People write to it. It writes back. Nothing gets lost. A real address, yourname@bot.cosvoice.com. Mail that arrives is kept on the line, forwarded where you want, and can wake your Bot. It replies in the same thread, from its own address.
Everything written up, in one place. A short summary after every call and every email. A morning brief. Who gets a warm welcome. Standing instructions it always has, in your words.
After every call and every email: a short written summary in your inbox and in your Bot's chat. Read it in ten seconds.
Lloyd is a CosVoice assistant. Graham is the person he works for. Here is the call, and here is what Graham reads afterward.
Scripted demonstration recorded with the real CosVoice voice. The restaurant side is played by a second voice.
Lloyd called Osteria Mozza for Friday at 7:30. The host offered 7:00 or 8:15. Lloyd took 8:15, as allowed, and booked it under Graham's name. The restaurant has the line's number for callbacks.
Reserved: Osteria Mozza · Friday · 8:15pm · party of 2 · under Graham
POST https://your-agent.example/hooks/cosvoice
X-CosVoice-Event: call.completed
X-CosVoice-Signature: v1=…
{ "event": "call.completed",
"data": { "call": {
"direction": "outbound",
"outcome": "Reserved · Friday 8:15pm · party of 2",
"summary": "…", "transcript": [ … ] } } }Scripted demonstration recorded with the real CosVoice voice. The plumber is played by a second voice.
Marco called back with the tankless water heater quote: $4,850 installed, permit and haul-away included, Navien 240, price good for 30 days. Earliest start is Monday the 21st. One decision is open: the recirculation pump, an extra $600. Lloyd told him Graham will call back by tomorrow.
Callback: (310) 555-0188
Voicemail tells you "Marco called." Your Chief of Staff tells you the price, what's included, the start date, how long the quote holds, and the one decision that's yours to make.
Graham never made a call. He read two summaries.
It answers as your assistant in a natural voice and has a real conversation. It finds out who is calling and what they need, and writes down the amounts, dates, options, and next step. People you've approved get through warmly. Strangers get a polite assistant that never shares your details: your contacts and bookings are not part of a stranger's call at all. Numbers you block are turned away before the line answers. If a caller asks for something by email, the line can send one email per call, and only with links you put in its instructions.
Yes, whenever anyone asks. It introduces itself as your assistant and never claims to be you or a person. People are more helpful when they know.
Good enough that callers treat it as a person. You pick from 38 voices in two sets, the new ones and the classic ones, and change any time in Settings. Every voice has a play button, and you can hear full calls on the demo page.
No. The line works on its own. Call it, text it, and ask it to make calls from your dashboard. If you do have a Grok Bot, or another assistant that supports MCP, connecting it lets your assistant make calls and read the summaries by itself.
Free for 7 days with 10 minutes of calls. Then $29 a month unless you cancel.