mohitbadwal/ringback

Overview

This tool provides MCP servers that let an AI agent call your phone for live, interruptible voice conversations. It uses free self-hosted components (pjsua2, whisper.cpp, Linphone) and requires no paid telephony or extra API keys. Tiered alerts allow escalating urgency levels.

Best for

Best for
Developers who need a free, self-hosted way for their AI agent to make live phone calls.

Use cases

• Enable your AI assistant to call you with time-sensitive alerts
• Create interruptible voice interactions for real-time agent feedback
• Build a self-hosted voice notification system without recurring costs

How to use

Tools exposed

• VOICE_SIP_ID
• VOICE_SIP_USER
• VOICE_SIP_PASS
• VOICE_SIP_CALLEE
• VOICE_SIP_PROXY
• WHISPER_MODEL
• VOICE_TTS
• VOICE_PIPER_MODEL
• VOICE_TTS_CMD
• VOICE_NULL_AUDIO
• RINGBACK_PRESENCE
• PJPROJECT_DIR
• PYTHON_BIN
• OPENSSL_PREFIX
• alert_me
• alert_test
• alert_status
• call_start
• converse
• get_conversation

Tested with

Claude Desktop, Claude Code, ChatGPT

Notes

This tool provides MCP servers that let an AI agent call your phone for live, interruptible voice conversations. It uses free self-hosted components (pjsua2, whisper.cpp, Linphone) and requires no paid telephony or extra API keys. Tiered alerts allow escalating urgency levels.

3 stars on GitHub. Last updated 2026-06-06. Licensed Apache-2.0.

Use cases

• Enable your AI assistant to call you with time-sensitive alerts
• Create interruptible voice interactions for real-time agent feedback
• Build a self-hosted voice notification system without recurring costs

Pros

• Fully self-hosted and free with no paid telephony dependencies
• Interruptible calls allow natural back-and-forth communication
• Uses well-known open-source components (whisper.cpp, Linphone)

Cons

• Requires significant setup and maintenance of multiple self-hosted services
• Low GitHub stars suggest limited community support and maturing codebase
• Voice call quality depends on your own SIP infrastructure and hardware

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.