Give your Grok Bot a phone number

Do you already have a Bot you like?

That's the only question that matters at the start, because it decides which of two roads you take.

If you don't have a Grok Bot yet, or you have one you're not attached to, take the ready-made one. It arrives already knowing how to get itself a phone number. If you've spent months teaching a Bot about your life and your work, keep it. You paste one address into it and it gets the same number and the same call write-ups, and keeps everything it knows about you.

Both roads end in the same place: a real number in your area code that your Bot answers, dials from, and reports on.

Road one, the ready-made Bot

Go to our Bot page and tap the button to add it to your Grok. You need an x.ai account with Grok Bot. The tap opens x.ai and adds a Bot called Bot Phone Line by CosVoice to your account, as your own copy.

It's yours from that moment. Rename it, change how it talks, keep it or delete it. Nothing you do to your copy reaches anyone else. Adding it is free, and nothing is charged until you ask it for a number and pick a plan.

Asking it for a number

Open the Bot and ask it for a phone number, in whatever words come naturally. It asks you two questions back: your area code, and the mobile you'll call and text it from.

Then it shows you the numbers that are free and you pick one. You choose a plan and pay, which is when the number is issued (the pricing page has the plans). About a minute later you can ring it.

So ring it. Hearing your own Bot pick up the phone is the moment the whole idea makes sense, and no amount of reading about it does the same job. Save the number as a contact while you're there.

Road two, the Bot you already use

This road has one paste in it. The connection uses MCP (Model Context Protocol), the standard way an assistant plugs into an outside tool. Your Bot talks to the phone line the same way it talks to its other tools, so there's nothing to install.

Add the address cosvoice.com/mcp to your Bot's MCP settings. A CosVoice page opens. Sign in (or create an account), and click Allow. Then send your Bot one sentence: "Set up my CosVoice line in area code 949. Call it Lloyd." Swap in your own area code and whatever name you like. It searches for numbers, you pick, and the line exists.

There's an even lazier way, and we mean that kindly. Give your Bot the address cosvoice.com/skill and tell it to read the page and give itself a phone number. That page is written for assistants, not for people, and it walks the Bot through the same steps. The people version is on our Grok Bot page.

The first call you ask for

Once the line exists, ask your Bot for a call in the chat you already use. "Call the garage and see if they can take the car Thursday morning." One sentence. Add what you'd accept instead and the call is more likely to finish the job.

The Bot places the call through the line and reads the summary when it's done. You get the write-up by email too: the outcome, the price, the date, the name of whoever the line spoke to, and the whole conversation.

You can also skip the chat. Call or text the line from your own mobile and what you say is treated as an instruction for your Bot.

Waking the Bot when a call ends

Here's the part we'd switch on before anything else. Normally an assistant finds out what happened on the line when it next checks. With Bot push on, the line starts your Bot itself, the moment a call finishes, with the outcome and the transcript already in hand. If the call didn't get it done, the Bot can work out the next step without waiting to be asked.

It works through a webhook, which is a private address that one program posts a message to when it wants to start another. In Grok, make a routine with the Webhook trigger. It gives you a URL and a key. Paste both into Settings, under Connect, where it says Wake your Bot. Two minutes, once.

Or let the Bot do it. Tell it "set up your CosVoice Bot push" and it sets this up itself. The ready-made Bot offers to do it after your first call.

It isn't only calls that wake it

Two other moments can start your Bot. You text the line an instruction ("move my Thursday cleaning to next week") and the Bot starts within seconds and places the call, without you ever opening it. Or an email lands at the line's own address, a quote say, and the Bot wakes and reads it.

You pick which moments wake it, and you can turn it off any time. Until you switch it on, every write-up still arrives by email, so nothing goes missing in the meantime.

What your Bot won't do with a phone

It won't claim to be a person. The line says it's an assistant, and says it's an AI whenever anyone asks. It won't read out a card number, agree to a charge, or commit your money, so a deposit comes back to you as a decision.

And it doesn't text other people freely yet. Texts to the line always arrive, but texts from the line are limited for now, so anything that has to arrive goes as a call or an email. Better you hear that from us today than find out when a confirmation doesn't land.

Common questions

More on setup guides

• Conditional call forwarding, explained without the jargon
• Set up an AI phone agent in ten minutes
• Connect Claude to a phone line
• Get ChatGPT to make a phone call