Voice AI flow builder

The Voice AI flow builder lets you design AI phone conversations on a visual canvas instead of relying on one long prompt. You connect nodes that each handle one job: a Start Call node, AI Agent nodes that talk with the caller, Router nodes that send the call down different paths, action nodes and End Call nodes.

Each AI Agent node can have its own prompt, AI model and tools, so you can split a call into stages. For example, a dental office could use a greeter agent to welcome callers, a router to separate booking requests from questions about office hours, and a booking agent to collect the caller's name and phone number.

Key steps

• Go to AI Agents, then Voice AI, then Agent List. Click Create Agent and choose Flow Based Builder.
• Give the first AI agent a name, a prompt and a model.
• Add more agents and Router nodes, connect each route, and add End Call nodes.
• Add actions such as Send SMS, Send Email or a custom API request, or connect an MCP server for contacts, calendars and appointments.
• Set the language, welcome messages and other voice settings.
• Test with a web call or phone call before going live.

You can also have Ask AI build the flow. Describe what the agent should do, answer its follow-up questions and review the build plan. Then edit, test or rebuild the generated flow.

Flow-based agents can be included in snapshots and loaded into other accounts with their nodes, branches and connected actions. Phone numbers, contacts and call history do not transfer, so you assign a phone number in the new account.