tfmcp: Terraform Model Context Protocol Tool

⚠️ This project includes production-ready security features but is still under active development. While the security system provides robust protection, please review all operations carefully in production environments. ⚠️

tfmcp is a command-line tool that helps you interact with Terraform via the Model Context Protocol (MCP). It allows LLMs to manage and operate your Terraform environments, including:

🎮 Demo

See tfmcp in action with Claude Desktop:

• Reading Terraform configuration files
• Analyzing Terraform plan outputs
• Applying Terraform configurations
• Managing Terraform state
• Creating and modifying Terraform configurations

🎉 Current Release

tfmcp v0.2.2 is the current release:

cargo install tfmcp --version 0.2.2

What's new in v0.2.2

• RMCP 3.0.1 and MCP 2026-07-28 discovery support
• Structured JSON tool results with backward-compatible text content
• Five-minute public cache hints for tool and resource discovery
• Sessionless Streamable HTTP behavior for MCP 2026-07-28 clients
• Capability metadata aligned with the methods tfmcp implements

Features

Installation

From Source

# Clone the repository
git clone https://github.com/nwiizo/tfmcp
cd tfmcp

# Build and install
cargo install --path .

From Crates.io

cargo install tfmcp

Using Docker

# Clone the repository
git clone https://github.com/nwiizo/tfmcp
cd tfmcp

# Build the Docker image
docker build -t tfmcp .

# Run the container
docker run -it tfmcp

Requirements

• Rust 1.88.0+ (Rust Edition 2024)
• Terraform CLI 1.15.8 installed and available in PATH
• Claude Desktop (for AI assistant integration)
• Docker (optional, for containerized deployment)

Usage

$ tfmcp --help
✨ A CLI tool to manage Terraform configurations and operate Terraform through the Model Context Protocol (MCP).

Usage: tfmcp [OPTIONS] [COMMAND]

Commands:
  mcp       Launch tfmcp as an MCP server
  analyze   Analyze Terraform configurations
  help      Print this message or the help of the given subcommand(s)

Options:
  -c, --config <PATH>    Path to the configuration file
  -d, --dir <PATH>       Terraform project directory
  -V, --version          Print version
  -h, --help             Print help

Using Docker

When using Docker, you can run tfmcp commands like this:

# Run as MCP server (default)
docker run -it tfmcp

# Run with specific command and options
docker run -it tfmcp analyze --dir /app/example

# Mount your Terraform project directory
docker run -it -v /path/to/your/terraform:/app/terraform tfmcp --dir /app/terraform

# Set environment variables
docker run -it -e TFMCP_LOG_LEVEL=debug tfmcp

Integrating with Claude Desktop

To use tfmcp with Claude Desktop:

1. If you haven't already, install tfmcp:

   cargo install tfmcp
   

   Alternatively, you can use Docker:

   docker build -t tfmcp .
   

2. Find the path to your installed tfmcp executable:

   which tfmcp
   

3. Add the following configuration to ~/Library/Application\ Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "tfmcp": {
      "command": "/path/to/your/tfmcp",  // Replace with the actual path from step 2
      "args": ["mcp"],
      "env": {
        "HOME": "/Users/yourusername",  // Replace with your username
        "PATH": "/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin",
        "TERRAFORM_DIR": "/path/to/your/terraform/project"  // Optional: specify your Terraform project
      }
    }
  }
}

If you're using Docker with Claude Desktop, you can set up the configuration like this:

{
  "mcpServers": {
    "tfmcp": {
      "command": "docker",
      "args": ["run", "--rm", "-v", "/path/to/your/terraform:/app/terraform", "tfmcp", "mcp"],
      "env": {
        "TERRAFORM_DIR": "/app/terraform"
      }
    }
  }
}

4. Restart Claude Desktop and enable the tfmcp tool.

5. tfmcp will automatically create a sample Terraform project in ~/terraform if one doesn't exist, ensuring Claude can start working with Terraform right away. The sample project is based on the examples included in the example/demo directory of this repository.

MCP Tools

tfmcp provides 82 MCP tools for AI assistants:

Core Terraform Operations

Workspace & State (v0.1.9)

Code & Output (v0.1.9)

Analysis & Security

Registry

HCP Terraform / Terraform Enterprise (Read-only)