7 days on us. A real phone line for your AI Bot, with 10 minutes of calls. Nothing charged today.See how it works
FREEfor 7 days · 10 minutes of calls

Give your AI assistant a phone.

CosVoice gives the assistant you already use a real phone number and its own email address. You call it. It calls restaurants, contractors and offices for you. When it's done, a written summary lands in your inbox.

Nothing is charged today. A card is needed to start. On day 7 it's $29 a month unless you cancel first. How the trial works.

Real number in your area code · Its own email address · 100 minutes a month · Works with Grok Bot, ChatGPT, Claude, Cursor and any MCP assistant

See it work

Lloyd books dinner. Then Lloyd takes the plumber's call.

Lloyd is a CosVoice assistant. Graham is the person he works for. Here is the call, and here is what Graham reads afterward.

Call 1 · Lloyd books Friday dinner

Lloyd calls Osteria Mozza1:48
  1. LloydHi, this is Lloyd, calling on behalf of Graham. I'd like a table for two this Friday at 7:30, if you have it.
  2. ThemLet me look… 7:30 is full. I can do 7:00 or 8:15.
  3. Lloyd8:15 works. Could you put it under Graham?
  4. ThemDone. Friday, 8:15, party of two. Can I get a number for the reservation?
  5. Lloyd(310) 555-0142. Is there anything you need from us before Friday?
  6. ThemNo, you're all set. Thanks.
  7. LloydThank you, see you Friday.
Listen to the call

Scripted demonstration recorded with the real CosVoice voice. The restaurant side is played by a second voice.

Summary · sent to Graham
Reserved · Friday 8:15pm · party of 2

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

  • Hold Friday 8:15pm on the calendar
  • Email Graham the confirmation
What your Grok Bot receives, automatically
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": [ … ] } } }

Call 2 · the plumber calls back, Lloyd picks up

Coastline Plumbing calls Lloyd2:31
  1. ThemHi, it's Marco from Coastline Plumbing, calling Graham back about the water heater.
  2. LloydHi Marco, this is Lloyd, Graham's assistant. He asked me to get the details. Do you have the quote?
  3. ThemYeah. Tankless unit, installed: $4,850. That includes the permit and haul-away.
  4. LloydGot it: $4,850 installed, permit and haul-away included. Is that the Navien 240 you two discussed, and how long does the price hold?
  5. ThemYes, the 240. Price is good for 30 days. We could start a week from Monday.
  6. LloydA week from Monday, so the 21st. Anything he needs to decide before then?
  7. ThemJust whether he wants the recirculation pump. That's another $600.
  8. LloydUnderstood. I'll get all of this to him today, and he'll call you back at this number by tomorrow. Is this the best number?
  9. ThemYep, this one. Thanks.
  10. LloydThank you, Marco.
Listen to the call

Scripted demonstration recorded with the real CosVoice voice. The plumber is played by a second voice.

Summary · sent to Graham
Quote captured · $4,850 installed · start Mon Sep 21

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.

Amounts
$4,850 installed (permit + haul-away included) · Recirculation pump: +$600 (optional)
Dates
Start: Monday, September 21 · Quote valid 30 days
Options
Add recirculation pump
Reference
Unit: Navien 240
Next step
Graham calls Marco back by tomorrow

Callback: (310) 555-0188

  • Decide on the recirculation pump
  • Call Marco back by tomorrow
Why this matters

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.

What it does

Your assistant can finally do the calls.

Books a table

Say the place and the time. Your assistant calls the restaurant and books it under your name.

Takes the callback

Forward the calls you miss. When the contractor calls back, it asks for the price, what's included and the start date, and writes them down.

Holds and connects

It works the phone menu and the hold music, then rings your mobile when a person answers.

Writes it up

After every call and every email you get a short summary you can read in ten seconds.

How it starts

Connected in three steps.

1. Paste one address.

Into your assistant's MCP settings: https://cosvoice.com/mcp

2. Click Allow.

Your assistant picks a number in your area code and the line is live.

3. Ask.

"Call Osteria Mozza and get us a table for two Friday around 7:30. 8:15 is fine if they're full."

No assistant yet? CosVoice also works as a plain phone line you can call and text. Running a business that lives on the phone? See wolf at wolfsi.app, or the CosVoice AI receptionist for small business.

Its own email

A phone number and an email address, for your assistant.

Your assistant gets yourname@bot.cosvoice.com. People can write to it. It replies in the same thread. Every email is summarized for you, just like every call.

Safe by design

It does what you tell it, and nothing else.

  • It says it's an AI whenever anyone asks.
  • It calls only when you or your assistant tell it to.
  • It never gives out a card number or agrees to a charge.
  • Every call ends with a full transcript.
Pricing

Priced like a phone line.

Every plan includes the number, the email address and the assistant connection. Plans differ only in minutes.

Free trial7 days
$0 for 7 days

Try the line on your own calls before you pay for it.

10 minutes of calls · 1 US number with its own email

A card is needed to start and nothing is charged today. On day 7 your card is charged $29 for Starter, and $29 each month after that, unless you cancel first. Move to a larger plan and the trial ends: that plan is charged instead. One free trial per person. How the trial works.

Starter
$29/ month

A phone line and an inbox for your AI Bot. Enough for a normal month of errands.

100 minutes of calls a month · about 25 calls
  • A real number in your area code, plus its own email
  • 100 minutes of calls a month
  • Books tables, takes calls, takes notes, reports back
  • Works with Grok Bot and any AI assistant
Pro
$199/ month

For a household or a founder whose Bot is on the phone daily.

1,000 minutes of calls a month · about 250 calls
  • Everything in Plus
  • 1,000 minutes of calls a month
  • Hands-on setup help, including standing instructions
  • First access to new features

Extra minutes are $0.25 each on every paid plan, rounded up per call. Texts and email never use minutes. Change plans any time. Cancel and the number is released.

Questions

Straight answers.

What is CosVoice?

An office for your AI Bot: a real phone number, a real email address, and a desk that keeps notes. Your Bot (usually a Grok Bot) is your Chief of Staff. You call it. It calls people for you, like a restaurant or a contractor. It answers when you can't. People write to it, and it writes back from its own address. After every call and every email it sends you a short written summary.

How do I connect my assistant?

Give your Bot the address cosvoice.com/skill and say “read this and give yourself a phone number.” That page is written for assistants: it explains the one URL to connect, how to pick a number, and how to place calls. Or paste https://cosvoice.com/mcp into your Bot's MCP settings yourself and click Allow.

Does it say it's an AI?

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.

Can it spend my money?

On a call, no. It never gives out a card number or agrees to a charge, so a booking or appointment is the most it commits you to. Your plan's minutes are the only thing the line itself spends, and app orders (dinner, groceries) go through only after you confirm.

What counts as a minute?

Time connected on a call, in or out, rounded up per call. On a call where the line connects you, the time after you are put through counts too. Texts and email never use minutes.

What does it cost?

Starter is $29 a month with 100 minutes of calls. Plus is $79 with 300 minutes. Pro is $199 with 1,000. Extra minutes are $0.25 each, rounded up per call. Every plan includes the number, the email address, and the assistant connection.

Is there a free trial?

Yes. 7 days with 10 minutes of calls on a real number. You add a card to start and nothing is charged that day. On day 7 your card is charged $29 for Starter, and $29 each month after that, unless you cancel first. If the 10 minutes run out early, calls pause until the plan begins. Cancel in Settings in a few seconds. One free trial per person, and it needs a permanent email address.

All questions and answers →

Your assistant has a calendar and an inbox. Give it a phone.

Free for 7 days with 10 minutes of calls. Then $29 a month unless you cancel.

Start free for 7 days