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MCP server · Developer Tools

Retell

by · github.com/universal-mcp/retell

A Universal MCP Application: universal_mcp_retell

Unclaimed MIT last commit a year ago devtools
InstallView source
45Fair

Scored 5 months ago · breakdown

About Retell

Retell is an MCP server published by universal-mcp in the Developer Tools category: a Universal MCP Application: universal_mcp_retell.

The repository has 1 stars and 0 forks, with the last commit a year ago. Six months or more without a commit doesn't mean the server is broken, but check the open issues before depending on it in production.

Install

From source
git clone https://github.com/universal-mcp/retell

This server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.

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Security checks

Static checks derived from the repository 7 days ago. Heuristics on the source, not an audit.

  • ✓README presentThe repository ships documentation.
  • ✓License declaredUsable under a stated license.
  • ✓Tests presentA test suite exists in the repository.
  • !Dependencies pinnedNo lockfile. Installs can pull different code over time.
  • ✓No dynamic code executionSource scan found no eval, dynamic Function, or shell execution.
  • !Scoped permissionsDoesn't declare a permission scope. Assume it can do anything its process can.

Releases

v0.1.2v0.1.2
v0.1.1v0.1.1

README

Retell Universal MCP Server

This repository contains an implementation of an Retell Universal MCP (Model Context Protocol) server. It provides a standardized interface for interacting with Retell's tools and services through a unified API.

The server is built using the Universal MCP framework.

This implementation follows the MCP specification, ensuring compatibility with other MCP-compliant services and tools.

Usage

You can start using Retell directly from agentr.dev. Visit agentr.dev/apps and enable Retell.

If you have not used universal mcp before follow the setup instructions at agentr.dev/quickstart

Available Tools

The full list of available tools is at ./src/universal_mcp_retell/README.md

Local Development

📋 Prerequisites

Ensure you have the following before you begin:

  • Python 3.11+ (recommended)
  • uv (install globally with pip install uv)

🛠️ Setup Instructions

Follow the steps below to set up your development environment:

  1. Sync Project Dependencies

    uv sync

    This installs all dependencies from pyproject.toml into a local virtual environment (.venv).

  2. Activate the Virtual Environment

    For Linux/macOS:

    source .venv/bin/activate

    For Windows (PowerShell):

    .venv\Scripts\Activate

  3. Start the MCP Inspector

    mcp dev src/universal_mcp_retell/server.py

    This will start the MCP inspector. Make note of the address and port shown in the console output.

  4. Install the Application

    mcp install src/universal_mcp_retell/server.py

📁 Project Structure

.
├── src/
│   └── universal_mcp_retell/
│       ├── __init__.py       # Package initializer
│       ├── server.py            # Server entry point
│       ├── app.py            # Application tools
│       └── README.md         # List of application tools
├── tests/                    # Test suite
├── .env                      # Environment variables for local development
├── pyproject.toml            # Project configuration
└── README.md                 # This file

📄 License

This project is licensed under the MIT License.

Generated with MCP CLI — Happy coding! 🚀

README fetched from the repository 7 days ago. The original is authoritative.

Questions

About Retell

How do I install Retell?

No package has been published for this server, so install it from source: clone the repository and follow its README.

Is Retell safe to use with an AI agent?

Its trust score is 45 out of 100 (fair). It passes 4 of the 6 static security checks run so far; the failures are listed above. It has no ConduID identity yet, so agent calls to it are not receipted.

Is Retell still maintained?

The last commit was a year ago. That's long enough that you should check whether the maintainer is responding to issues before depending on it.