FastVoice
Open voice automation

Build voice agents you can see, test, and own.

Design conversational workflows, test them in the browser, connect your preferred AI and telephony providers, and deploy on infrastructure you control.

Self-hostedBring your own modelsBrowser + telephony
Customer support agentDraft
StartWelcome caller

Greet naturally and identify the reason for calling.

AgentResolve request

Use knowledge, tools and live context.

EndClose the call

Confirm next steps and say goodbye.

One open control plane

From first prompt to production call.

Build the conversation, test it with your microphone, connect a number, and inspect every run without handing your data to a black box.

01

Design visually

Compose typed conversation nodes, tools, conditions, context extraction and post-call actions.

02

Speak before shipping

Run browser calls and text simulations against the exact workflow draft you are editing.

03

Deploy on your terms

Use xAI or another provider, your telephony account, and infrastructure you control.

Built for integration

A voice platform that is also an API.

Automate agents, campaigns and run analysis through the Python SDK, REST API and MCP server.

Read developer documentation