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RetellAI MCP Server

@abhaybabbar

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Basic information

Category

Other

Transports

stdio

Author

abhaybabbar

About RetellAI MCP Server

MCP server for retellai

#retellai#mcp-server#voice-assistant

RetellAI MCP Server config

Add this server to your MCP-compatible client using the configuration below.

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

RetellAI MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

What is RetellAI MCP Server?

This is a Model Context Protocol (MCP) server implementation for RetellAI, allowing AI assistants to interact with RetellAI's voice services. It provides tools for managing calls, agents, phone numbers, and voices, and is intended for developers using AI assistants like Claude Desktop.

How to use RetellAI MCP Server?

Add a configuration block to your Claude Desktop claude_desktop_config.json with the command npx -y @abhaybabbar/retellai-mcp-server and set the environment variable RETELL_API_KEY. Alternatively, run the server from source: install dependencies (npm i), create a .env file with your API key, and execute node src/retell/index.js.

Key features of RetellAI MCP Server

  • Call management: create, list, get, delete calls
  • Agent management: create, list, get, update, delete agents
  • Phone number management: provision, configure, list, delete numbers
  • Voice management: list and get available voice options
  • Supports both phone calls and web calls
  • Integrates with Claude Desktop via MCP

Use cases of RetellAI MCP Server

  • List all phone numbers associated with a RetellAI account
  • List and inspect all created voice agents
  • Create an agent and initiate an outbound call for ordering food
  • Retrieve details of a specific call or agent by ID
  • Update or delete existing agents and phone numbers

Frequently asked questions

1

How do I obtain an API key for RetellAI MCP Server?

Get your API key from the Retell dashboard at https://dashboard.retellai.com/apiKey.

2

What dependencies are required to run RetellAI MCP Server?

You need Node.js, npm, and a valid RetellAI API key. The server is run via npx or from source.

3

Why might Claude Desktop show "No tools available" for RetellAI MCP Server?

This is typically caused by a dependency or version mismatch. Upgrading to the latest package with `npx -y @abhaybabbar/retellai-mcp-server@latest` often resolves the issue.

4

Where does data used by RetellAI MCP Server reside?

The server acts as a proxy to RetellAI’s cloud services; all call, agent, phone number, and voice data is stored in RetellAI’s infrastructure.

Comments

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