Side-by-side comparison of two Model Context Protocol servers — install paths, tools, quality signals, and directory engagement so you can pick the right one for Claude, Cursor, and other MCP clients.
An MCP server to make phone calls using VoIP/SIP and OpenAI's Realtime API and observe the transcript.
Give AI agents a real phone number and voice. Make outbound calls, handle inbound calls, send email, and manage contacts via 26 MCP tools. 500ms voice latency (Deepgram Nova-3 + Claude + Cartesia Sonic-3). Install: pip install spix-mcp. Free tier available.