Whatever assistant you use, it can make the call.

Open Calls is the ChatGPT integration that makes real phone calls for you: ChatGPT sets it up from one prompt, quotes each call, calls the business and brings back a grounded answer.

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.

Add Open Calls to Claude Code as a remote MCP server and let your coding agent make a real, approved phone call when a task needs one, with the grounded result back in the terminal.

Open Calls gives Manus the ability to make real phone calls: add the agent MCP server with a bearer token from your account, and Manus can quote, place and report calls with your approval.

Open Calls gives Muse, Meta's personal AI agent, a phone: Muse builds a custom connector from the Open Calls API, keeps the key in its Secure Credentials Store, quotes every call and reports back with quotes from the call.

Use Open Calls from n8n: an approved task creates one bounded phone call, the signed result webhook returns the confirmed facts, and your workflow writes them to a sheet, CRM or Slack.

Open Calls works with Zapier through its MCP Client and the REST API: a Zap creates one approved phone call and receives the grounded result to use in the next step.

Open Calls works with Make through its MCP Client and the REST API: a scenario creates one approved phone call and uses the grounded answer downstream.