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mohitbadwal/ringback

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Let your AI agent call your phone and talk to you — MCP servers for live, interruptible voice calls + tiered alerts, using free self-hosted pieces (pjsua2 + whisper.cpp + Linphone)

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MCP

mohitbadwal/ringback

Added 7 June 2026

#ai-agents#anthropic#claude#llm#macos#mcp#mcp-server#model-context-protocol
Catalogue record, not a reviewed recommendation. This record can include automatically collected descriptions and setup details. Confirm important claims with the original source. Explore source-reviewed tools.

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

Clients listed in this record (not verified here)

Claude Desktop, Claude Code, ChatGPT

Notes

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

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

Pairs with

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