open calls.Open Calls is the Claude connector that makes real phone calls: one prompt adds the connector, Claude quotes each call, dials, and reports back with quotes from the person who answered.
Verified on Claude.ai on September 16, 2026 (custom connector, published identity, sign-in when needed). Claude Desktop and Cowork use the same connector.
A custom connector in Claude (Customize › Connectors › Add custom connector) using Claude's published identity and a sign-in on opencalls.dev.
I am new to Open Calls (opencalls.dev), an AI phone-calling service. Walk me through setting it up and making a first test call with the free minute, one step at a time, waiting for me to confirm each step. 1) Account: I open https://opencalls.dev/signup?via=google, sign in with Google (email and GitHub work too), and a personal account is ready for me. 2) Free minute: on the page where I approve the connection (or at https://opencalls.dev/app/start) I give my mobile number and you call me at once for a one-minute introduction, free and without a card; that number becomes my callback number. Calling anyone else needs credit I add myself in https://opencalls.dev/app/billing. 3) Connect: add Open Calls to Claude as a custom connector. MCP server URL: https://opencalls.dev/mcp (Streamable HTTP). Authentication: OAuth with “Sign in when needed” and the OAuth client “Use Claude's published identity”. Your own documentation: https://support.claude.com/en/articles/11175166-get-started-with-custom-connectors-using-remote-mcp. If you cannot add connectors yourself, walk me through Customize › Connectors › Add custom connector step by step, then ask me to approve access to my account on opencalls.dev.dev when the sign-in card appears. 4) Confirm: run get_workspace and tell me that my account is connected, my available credit, the destination rates and its next_step. 5) First test call: I will give you my own mobile number. Quote the maximum charge for a one-minute call from the destination rates in get_workspace, ask for my approval, then use call_business in ask mode to call me and ask one simple question, for example what I would like for lunch tomorrow. Poll get_call until it ends and tell me exactly what I answered, with the supporting quote. After that we can try a real business. Getting-started guide: https://opencalls.dev/start Never place a call, spend credit or change settings without asking me first; every call needs my explicit approval and a maximum charge.
Yes. The same connector appears in Claude Desktop and Cowork once it is added to your Claude account; the desktop links on this page open the app with the prompt.
Pay as you go at $0.25 per minute of AI conversation, billed by the second after a one-minute minimum, with a cheaper waiting rate while the line keeps the AI on hold. Your assistant quotes the maximum before every call and you approve it.
No. Every call needs your explicit approval and a maximum charge, calls are information-only, and you can stop a call at any time.
Yes. Sign in with Google, give your mobile number, and your AI calls you for a free minute to introduce itself, with no card. After that, add credit to call anyone.
United States, Canada, Israel and the United Kingdom today, with per-destination rates shown before you approve.
Any other MCP client or REST integration works too: see the developer guide.