A Model Context Protocol (MCP) server that enables Claude and other AI assistants to initiate and manage voice calls using Twilio and OpenAI (GPT-4o Realtime model).
Voice Call MCP Server is an MCP project maintained in the lukaskai/voice-call-mcp-server repository. The maintainer describes its purpose as “A Model Context Protocol (MCP) server that enables Claude and other AI assistants to initiate and manage voice calls using Twilio and OpenAI (GPT-4o Realtime…”. Read the project documentation for the complete scope.
The project provides a local client configuration using node. Follow the repository’s build and installation steps before copying it, and replace example paths with the paths on your own computer.
The example declares TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN, TWILIO_NUMBER, OPENAI_API_KEY, NGROK_AUTHTOKEN. Secret-looking values have been replaced with placeholders. Required and optional labels are shown only when the documentation states them.
Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.
{
"mcpServers": {
"voice-call": {
"command": "node",
"args": [
"/path/to/your/mcp-new/dist/start-all.cjs"
],
"env": {
"TWILIO_ACCOUNT_SID": "your_account_sid",
"TWILIO_AUTH_TOKEN": "YOUR_TWILIO_AUTH_TOKEN",
"TWILIO_NUMBER": "your_e.164_format_number",
"OPENAI_API_KEY": "YOUR_OPENAI_API_KEY",
"NGROK_AUTHTOKEN": "YOUR_NGROK_AUTHTOKEN"
}
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
| Variable | Description | Required |
|---|---|---|
| TWILIO_ACCOUNT_SID | Declared in the maintainer’s client configuration. | Check documentation |
| TWILIO_AUTH_TOKEN | Declared in the maintainer’s client configuration. | Check documentation |
| TWILIO_NUMBER | Declared in the maintainer’s client configuration. | Check documentation |
| OPENAI_API_KEY | Declared in the maintainer’s client configuration. | Check documentation |
| NGROK_AUTHTOKEN | Declared in the maintainer’s client configuration. | Check documentation |
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