Get a line
A number in your area code, plus its own email address. About a minute to set up.
Claude is good at the part before the call: working out what to ask, what a fair price is, what to do if the answer is no. CosVoice is the part it cannot do. Give it a real number and the plan turns into a phone call, then into a written outcome it can act on.
A number in your area code, plus its own email address. About a minute to set up.
Add https://cosvoice.com/mcp to Claude, sign in on the CosVoice page that opens, and press Allow. No key to copy.
Tell Claude the outcome you want and the bounds it can work inside. It writes the brief and reads back what happened.
Plain sentences. The line works out the conversation.
“Call three plumbers for a quote on a tankless install and tell me who's cheapest and soonest.”
“Ring the vet for Max's results and put the recheck on my calendar if they offer one.”
“Call the hotel and ask about an early check-in, but don't agree to a fee.”
“Phone the garage, ask what the noise is likely to be, and book a look if it's under two hundred.”
Say what not to agree to and the line holds that line on the call, then tells you what was offered instead.
Outcome, structured details, action items, and the transcript, so the next step can happen without you retyping anything.
The same number works with ChatGPT, Cursor, and Grok Bot. Connect whichever you are in at the time.
No. The line handles the conversation and reports when it ends. You get the full transcript, so nothing is lost.
Yes. Ask for the calls and the comparison in one sentence; each call comes back separately and Claude reads them together.
No. Calls use your CosVoice plan's minutes, whichever assistant asked for them. Try it for $3 once: a number and 10 minutes of calls to use over 14 days.
No. The line never reads out a card number or agrees to a charge, so the most it commits you to is a booking or an appointment.
Also for Grok Bot, Meta's Muse, and anything you write yourself.
Pick a number, save the contact, make the first call. About a minute.