MCP Server

Local

callme

Enables voice calling via Twilio and OpenAI by initiating phone calls, handling text-to-speech (TTS), speech-to-text (STT), and live transcription. Requires Twilio and OpenAI API keys.

OpenAI

api-development

Add to Your Project

Copy this JSON into your .mcp.json to enable this server

Add to your .mcp.json:

{
  "mcpServers": {
    "callme": {
      "command": "bun",
      "args": [
        "run",
        "--cwd",
        "${CLAUDE_PLUGIN_ROOT}/server",
        "start"
      ],
      "env": {
        "CALLME_PORT": "${CALLME_PORT:-0}",
        "CALLME_TTS_VOICE": "${CALLME_TTS_VOICE}",
        "CALLME_KOKORO_URL": "${CALLME_KOKORO_URL:-}",
        "CALLME_PHONE_NUMBER": "${CALLME_PHONE_NUMBER}",
        "CALLME_TTS_PROVIDER": "${CALLME_TTS_PROVIDER:-openai}",
        "CALLME_OPENAI_API_KEY": "${CALLME_OPENAI_API_KEY}",
        "CALLME_NGROK_AUTHTOKEN": "${CALLME_NGROK_AUTHTOKEN}",
        "CALLME_PHONE_AUTH_TOKEN": "${CALLME_PHONE_AUTH_TOKEN}",
        "CALLME_PHONE_ACCOUNT_SID": "${CALLME_PHONE_ACCOUNT_SID}",
        "CALLME_USER_PHONE_NUMBER": "${CALLME_USER_PHONE_NUMBER}",
        "CALLME_TRANSCRIPT_TIMEOUT_MS": "${CALLME_TRANSCRIPT_TIMEOUT_MS:-180000}",
        "CALLME_STT_SILENCE_DURATION_MS": "${CALLME_STT_SILENCE_DURATION_MS:-800}"
      }
    }
  }
}

Replace placeholder values for: CALLME_OPENAI_API_KEY, CALLME_NGROK_AUTHTOKEN, CALLME_PHONE_AUTH_TOKEN

Security Considerations

Review these signals before enabling this server

Requires secrets

This MCP server needs API keys or credentials. Configure them in your environment before use.

Admin access level

This server has elevated permissions. Review the source code before enabling.

Details

Server configuration and connection parameters

Commandbun

Access Leveladmin

Arguments

Command-line arguments passed to the server process

run--cwd${CLAUDE_PLUGIN_ROOT}/serverstart

Environment Variables

Environment variables set when the server starts

CALLME_PORT=${CALLME_PORT:-0}

CALLME_TTS_VOICE=${CALLME_TTS_VOICE}

CALLME_KOKORO_URL=${CALLME_KOKORO_URL:-}

CALLME_PHONE_NUMBER=${CALLME_PHONE_NUMBER}

CALLME_TTS_PROVIDER=${CALLME_TTS_PROVIDER:-openai}

CALLME_OPENAI_API_KEY=${CALLME_OPENAI_API_KEY}

CALLME_NGROK_AUTHTOKEN=${CALLME_NGROK_AUTHTOKEN}

CALLME_PHONE_AUTH_TOKEN=${CALLME_PHONE_AUTH_TOKEN}

CALLME_PHONE_ACCOUNT_SID=${CALLME_PHONE_ACCOUNT_SID}

CALLME_USER_PHONE_NUMBER=${CALLME_USER_PHONE_NUMBER}

CALLME_TRANSCRIPT_TIMEOUT_MS=${CALLME_TRANSCRIPT_TIMEOUT_MS:-180000}

CALLME_STT_SILENCE_DURATION_MS=${CALLME_STT_SILENCE_DURATION_MS:-800}

Required Secrets

Sensitive values you must provide — never committed to source control

CALLME_OPENAI_API_KEYCALLME_NGROK_AUTHTOKENCALLME_PHONE_AUTH_TOKEN

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LanguageTypeScript

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Forks251

MaintenanceExcellent

Last CommitApr 7, 2026

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