Grok Phone Calls: Add OsmO as a Custom Connector

Short answer: Any Grok user can add a custom connector. Add OsmO at grok.com/connectors, sign in with your mobile number, and Grok can call businesses for you, including if you live outside the US, where Grok Bot's own calling does not reach.

grok.com/connectors → New Connector → Custom → https://api.getosmo.app/mcp.

Custom connectors are available to all Grok users.

Disconnecting in Grok may not end OsmO's side; remove it in the OsmO app too if you use it.

How it works

Sign in with your mobile numberYou get 50 free credits. Nothing to pay.
Add OsmO to GrokChatGPT, Claude, Grok and other apps that take connectors.
Ask it to callOsmO calls, talks, and tells you what was said.

The full guide

Before you start

Any Grok account (Business and Enterprise admins enable custom connectors first).
A mobile number from the US, Canada, the UK or Australia (India also works) to receive a sign-in code.
Nothing to pay: you start with 50 free credits.

Connect OsmO to Grok

Go to grok.com/connectors and choose New Connector → Custom.
Name it OsmO and paste https://api.getosmo.app/mcp.
Grok opens OsmO's sign-in page. Enter your mobile number and the texted code, then approve.
Ask Grok for a call in any chat: "Call the bike shop on Queen Street and ask if they service e-bikes."

When we tested this on grok.com, Grok found OsmO's sign-in by itself, with no client ID to enter.

Grok Business and Enterprise

Admins enable custom connectors in the xAI console before members can add them.

Grok Bot or OsmO?

Picking a calling route in Grok
You want to	Use
Call a US business and you pay for SuperGrok	Grok Bot's own calling works
Call from Canada, the UK or Australia	OsmO
Try calling without a subscription	OsmO (50 free credits)

Make a first test call

Make your first call a low-stakes one, such as asking a shop for its opening hours. You will see how your AI app confirms the call, how long a call takes and what the answer looks like, before you send it on anything that matters.

If something goes wrong

Common messages and what they mean
What you see	What it means	What to do
"You've used your free OsmO credits"	Not enough credits left for this request (each call needs 3)	Ask for fewer calls at once, or keep calling from the OsmO app: getosmo.app/app
"OsmO can call listed businesses and toll-free numbers"	The number is not a listed business, a toll-free line or one of your saved contacts	Give the business name instead. To call your contacts from your AI app, use the OsmO app, which syncs them
The sign-in page will not take your number	Sign-in accepts US, Canadian, UK, Australian and Indian mobile numbers	Use a mobile number from one of those countries
"Scheduling calls for later is available in the OsmO app"	Calls booked for a later time need the app	Ask for the call now, or schedule it in the OsmO app
A call is refused for the same number	OsmO places at most 5 calls to one number in any 24 hours	Try again once 24 hours have passed since the earliest of those calls

Turn it off

To disconnect, remove OsmO from your AI app's connector settings. Some apps do not tell OsmO when you do that. If you use the OsmO app, also open the Sharing card, then Connect AI apps, and tap Disconnect. If you only use OsmO from AI apps, email [email protected] with the mobile number you signed in with and we will end the access.

Questions people ask

Can Grok call without asking me?

OsmO asks your AI app to read you who it will call and why, and to wait for your yes before it dials. Some apps also ask permission before using a connector at all.

Sources

Checked November 13, 2026. Vendors change their products often; follow the links for the current version.

How to make phone calls from Grok: adding OsmO