io.github.sns45/better-call-claude MCP Server

io.github.sns45/better-call-claude

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What is the io.github.sns45/better-call-claude MCP server?

Voice Calls, SMS, and WhatsApp for Claude Code with cross-channel context sharing.

How to install io.github.sns45/better-call-claude

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

BETTERCALLCLAUDE_PHONE_PROVIDER
required
Phone provider: 'twilio' or 'telnyx'
BETTERCALLCLAUDE_PHONE_NUMBER
required
Your phone number in E.164 format
BETTERCALLCLAUDE_PHONE_ACCOUNT_SID
required
secret
Twilio Account SID or Telnyx API Key
BETTERCALLCLAUDE_PHONE_AUTH_TOKEN
required
secret
Twilio Auth Token or Telnyx API Secret
BETTERCALLCLAUDE_USER_PHONE_NUMBER
required
Your personal phone number in E.164 format (for outbound calls/SMS)
BETTERCALLCLAUDE_OPENAI_API_KEY
required
secret
OpenAI API key for speech-to-text (Whisper) and text-to-speech
BETTERCALLCLAUDE_WHATSAPP_NUMBER
WhatsApp number if different from phone number (e.g., Twilio Sandbox)
BETTERCALLCLAUDE_PORT
Local HTTP server port
TAILSCALE_HOSTNAME
Override Tailscale hostname for webhook URL
BETTERCALLCLAUDE_WHATSAPP_PROVIDER
WhatsApp provider: set to 'baileys' for free WhatsApp via WebSocket (no Twilio needed)
BETTERCALLCLAUDE_BAILEYS_AUTH_DIR
Path to Baileys auth state directory (default: data/baileys-auth)
BETTERCALLCLAUDE_WHATSAPP_CHAT_HISTORY_SIZE
Max WhatsApp chat history messages to retain (default: 50)

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "better-call-claude": {
      "command": "npx",
      "args": [
        "-y",
        "better-call-claude"
      ],
      "env": {
        "BETTERCALLCLAUDE_PHONE_PROVIDER": "<YOUR_BETTERCALLCLAUDE_PHONE_PROVIDER>",
        "BETTERCALLCLAUDE_PHONE_NUMBER": "<YOUR_BETTERCALLCLAUDE_PHONE_NUMBER>",
        "BETTERCALLCLAUDE_PHONE_ACCOUNT_SID": "<YOUR_BETTERCALLCLAUDE_PHONE_ACCOUNT_SID>",
        "BETTERCALLCLAUDE_PHONE_AUTH_TOKEN": "<YOUR_BETTERCALLCLAUDE_PHONE_AUTH_TOKEN>",
        "BETTERCALLCLAUDE_USER_PHONE_NUMBER": "<YOUR_BETTERCALLCLAUDE_USER_PHONE_NUMBER>",
        "BETTERCALLCLAUDE_OPENAI_API_KEY": "<YOUR_BETTERCALLCLAUDE_OPENAI_API_KEY>",
        "BETTERCALLCLAUDE_WHATSAPP_NUMBER": "<YOUR_BETTERCALLCLAUDE_WHATSAPP_NUMBER>",
        "BETTERCALLCLAUDE_PORT": "<YOUR_BETTERCALLCLAUDE_PORT>",
        "TAILSCALE_HOSTNAME": "<YOUR_TAILSCALE_HOSTNAME>",
        "BETTERCALLCLAUDE_WHATSAPP_PROVIDER": "<YOUR_BETTERCALLCLAUDE_WHATSAPP_PROVIDER>",
        "BETTERCALLCLAUDE_BAILEYS_AUTH_DIR": "<YOUR_BETTERCALLCLAUDE_BAILEYS_AUTH_DIR>",
        "BETTERCALLCLAUDE_WHATSAPP_CHAT_HISTORY_SIZE": "<YOUR_BETTERCALLCLAUDE_WHATSAPP_CHAT_HISTORY_SIZE>"
      }
    }
  }
}