RetellAI Voice Services

abhaybabbar/retellai-mcp-server

This is a Model Context Protocol (MCP) server implementation for RetellAI, allowing AI assistants to interact with RetellAI's voice services.

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Install

npx -y @abhaybabbar/retellai-mcp-server

Client configuration

{
  "mcpServers": {
    "retellai-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@abhaybabbar/retellai-mcp-server"
      ],
      "env": {
        "RETELL_API_KEY": "<RETELL_API_KEY>"
      }
    }
  }
}

Environment variables

RETELL_API_KEY

GitHub stars: 4
Author: @abhaybabbar
Category: Voice Processing, AI Chatbot
License: MIT
Updated: Oct 6, 2026

Features

Call Management: Create and manage phone calls and web calls
Agent Management: Create and manage voice agents with different LLM configurations
Phone Number Management: Provision and configure phone numbers
Voice Management: Access and use different voice options

Tools (18)

list_calls
Lists all Retell calls
create_phone_call
Creates a new phone call
create_web_call
Creates a new web call
get_call
Gets details of a specific call
delete_call
Deletes a specific call
list_agents
Lists all Retell agents
create_agent
Creates a new Retell agent
get_agent
Gets a Retell agent by ID
update_agent
Updates an existing Retell agent
delete_agent
Deletes a Retell agent
get_agent_versions
Gets all versions of a Retell agent
list_phone_numbers
Lists all Retell phone numbers
create_phone_number
Creates a new phone number
get_phone_number
Gets details of a specific phone number
update_phone_number
Updates a phone number
delete_phone_number
Deletes a phone number
list_voices
Lists all available Retell voices
get_voice
Gets details of a specific voice

Details on this page are taken from the project's README. Open README

Supported clients

Clients mentioned in this server's README:

View all

Claude Desktop

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Anthropic's official Claude AI desktop application. Supports MCP servers to extend functionality.

WindowsMacOS

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