Short answer: Not by itself. We found no way in Anthropic's documentation for Claude to dial a phone number, and Claude's voice conversations are between you and Claude. What Claude does have is custom connectors: add OsmO as one and Claude can place a real call to a business, ask your question and give you the answer in the chat.
We found no built-in calling in Claude, but it takes remote connectors on every plan, including Free (one custom connector).
Add OsmO in Customize → Connectors with the address https://api.getosmo.app/mcp.
In Claude Code, one claude mcp add command does the same.
Your first 50 credits are free: about 16 answered calls.
How it works
- Sign in with your mobile numberYou get 50 free credits. Nothing to pay.
- Add OsmO to ClaudeChatGPT, Claude, Grok and other apps that take connectors.
- Ask it to callOsmO calls, talks, and tells you what was said.
The full guide
Why Claude needs a connector to call
A phone call needs a phone line, a voice that can listen and reply in real time, and a way to press keys in a phone menu. Claude is a model that reads and writes; it can plan a call, but it needs a phone line and a live voice to carry one. A calling connector supplies the line and the voice. Claude decides what to ask; OsmO makes the call and hands back what was said.
| Phone job | Claude on its own | Claude with OsmO |
|---|---|---|
| Ring a shop, clinic or restaurant and ask a question | No documented way | Yes |
| Find the business's number for you | It can search; no documented dialling | Yes, from its public listing |
| Work a phone menu and wait on hold | Not documented | Yes |
| Makes calls for you if you live in Canada, the UK or Australia | Not documented | Yes: sign in with your local mobile number |
| Cost to try | Not applicable | 50 free credits, about 16 answered calls |
Add OsmO to Claude (web, desktop and mobile)
- Open Customize → Connectors, choose + Add, then Add custom connector.
- Name it OsmO and paste
https://api.getosmo.app/mcpas the URL. - Choose Connect. Claude opens OsmO's sign-in page; enter your mobile number and the texted code, then approve.
- Start a chat and ask Claude to call a business. OsmO asks Claude to confirm the business and the question with you first.
On Team and Enterprise plans an owner adds the connector once in Organization settings → Connectors, and members then connect their own OsmO account. Connectors added on the web also work in the Claude mobile apps.
Add OsmO to Claude Code
In a terminal, run claude mcp add --transport http osmo https://api.getosmo.app/mcp, then type /mcp inside Claude Code to sign in. Claude Code handles the OAuth sign-in itself. A coding session can then make a call when a task needs a real-world answer, for example checking a supplier's opening hours.
What it costs
OsmO For my AI starts with 50 free credits when you sign in with your mobile number, with no card. An answered call uses 3 credits however long it lasts, and a call nobody answers is free, so the free credits cover about 16 answered calls. When they run out you can keep calling from the OsmO app.
Where it works
You can sign in with a mobile number from the United States, Canada, the United Kingdom or Australia (India too), and calls are placed from the OsmO number for your country. OsmO calls listed businesses in your own country, such as shops, clinics, restaurants and offices, and toll-free helplines. With the free web credits it does not call personal numbers; with the OsmO app it can also call your saved contacts.
Questions people ask
Can I use OsmO on Claude's free plan?
Claude Free allows one custom connector, so yes, if that slot is free. OsmO's 50 free credits are separate from your Claude plan.
Will Claude call without asking me?
OsmO asks Claude to read you who it will call and why, and to wait for your yes before it dials. Claude may also ask before using a connector, depending on your settings.
Is OsmO free to use with Claude?
You start with 50 free credits and no card. An answered call uses 3 credits, so that is about 16 calls; unanswered calls are free.
Sources
Checked November 13, 2026. Vendors change their products often; follow the links for the current version.