Short answer: OsmO is listed in ChatGPT's Plugins. Connect it, sign in with your mobile number and a texted code, and ChatGPT can call shops, clinics, restaurants and helplines for you. Setup takes about a minute; the first 50 credits are free.
OsmO is in ChatGPT's Plugins: search, Connect, sign in.
Sign-in uses your mobile number and a texted code; no card.
Business and Enterprise workspaces can also add https://api.getosmo.app/mcp as a custom server.
How it works
- Sign in with your mobile numberYou get 50 free credits. Nothing to pay.
- Add OsmO to ChatGPTChatGPT, 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
- A ChatGPT account where you can see Plugins (custom servers need Business, Enterprise or Edu).
- 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 ChatGPT
- Open ChatGPT on the web or in the app, go to Plugins and search for OsmO.
- Choose Connect. ChatGPT opens OsmO's sign-in page.
- Enter your mobile number, then the code we text you, and approve access.
- Back in a chat, ask: "Use OsmO to call the post office on High Street and ask when it closes today."
Plans and workspaces
The directory is the simplest route for most people. ChatGPT Business and Enterprise workspaces can also add OsmO as a custom MCP server with the address https://api.getosmo.app/mcp (Plugins → + → Add custom MCP server); on Business only admins or owners can create one, and on Enterprise admins can grant it to selected members. OpenAI lists custom servers for Business, Enterprise and Edu on ChatGPT web.
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
| 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 ChatGPT 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.
Keep reading
- Can ChatGPT make phone calls?No built-in calling found. With the OsmO plugin it calls businesses for you.Read ›
- Get your AI to phone a restaurant for a tableTables at places that only take bookings by phone.Read ›
- How to make phone calls from Claude: adding OsmO as a connectorCustomize → Connectors → Add custom connector, or claude mcp add.Read ›