Depyler
Compiles Python to Rust, helping transition off of Python to Energy Efficient and Safe Rust Code
What is Depyler?
Depyler is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to compiles python to rust, helping transition off of python to energy efficient and safe rust code
Compiles Python to Rust, helping transition off of Python to Energy Efficient and Safe Rust Code
This server falls under the Coding Agents category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- Compiles Python to Rust, helping transition off of Python to
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx depylerConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Depyler
Depyler is a Python-to-Rust transpiler that compiles Python source code into safe, energy-efficient Rust programs. It uses type-directed transpilation with automatic ownership inference and supports 27 standard library modules, achieving an 80%+ single-shot compile rate. Developers use it to migrate performance-critical Python codebases to Rust without rewriting everything from scratch, gaining memory safety and significantly reduced energy consumption. The MCP server exposes transpilation, analysis, verification, and quality-check tools directly to AI assistants like Claude.
Prerequisites
- Rust toolchain 1.83.0 or newer (install via rustup)
- Python 3.8 or newer installed on the system
- cargo install depyler to build the binary from source
- An MCP client such as Claude Desktop or Claude Code
Install Rust toolchain
Depyler is built in Rust and must be compiled from source. Install the Rust toolchain using rustup if you do not already have it.
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | shInstall Depyler via cargo
Use cargo to download and compile the depyler binary. This places the depyler executable in your Cargo bin directory (usually ~/.cargo/bin/).
cargo install depylerVerify the installation
Confirm that the depyler binary is accessible and can be invoked. You should see version output.
depyler --versionAdd Depyler to your MCP client configuration
Open your Claude Desktop configuration file and register the depyler MCP server. The server is started with 'agent start' and communicates on the specified port.
{
"mcpServers": {
"depyler": {
"command": "depyler",
"args": ["agent", "start", "--foreground", "--port", "3000"],
"env": {
"RUST_LOG": "info"
}
}
}
}Restart Claude Desktop
After saving the configuration file, restart Claude Desktop so it picks up the new MCP server definition. The depyler tools will appear in the tools panel.
Analyze migration complexity before transpiling
Before transpiling a project, use the analyze_migration_complexity tool (or CLI) to estimate effort and identify unsupported patterns. This helps you plan which files to transpile first.
depyler analyze example.pyTranspile Python to Rust and verify
Run the transpilation and optionally verify semantic equivalence between the Python source and the generated Rust code. The --explain flag shows why specific decisions were made.
depyler transpile example.py --verify
depyler transpile example.py --explainDepyler Examples
Client configuration
Add this block to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or the equivalent path on your OS. Set RUST_LOG to 'debug' for more verbose output during troubleshooting.
{
"mcpServers": {
"depyler": {
"command": "depyler",
"args": ["agent", "start", "--foreground", "--port", "3000"],
"env": {
"RUST_LOG": "info"
}
}
}
}Prompts to try
Use these prompts with Claude after the depyler MCP server is connected.
- "Analyze the migration complexity of my Python file at /home/user/scripts/parser.py"
- "Transpile /home/user/scripts/parser.py to Rust and verify the output is semantically equivalent"
- "Convert my Python project at /home/user/myproject to Rust, starting with the most complex modules"
- "Run a pmat quality check on the generated Rust code and fix any issues"Troubleshooting Depyler
depyler: command not found after cargo install
Ensure ~/.cargo/bin is in your PATH. Add 'export PATH="$HOME/.cargo/bin:$PATH"' to your shell profile and restart your terminal.
Transpilation fails with unsupported Python construct
Run 'depyler analyze yourfile.py' first to identify unsupported patterns. Add Python type annotations to help depyler infer Rust types accurately, as type-directed transpilation relies on annotations.
MCP server does not appear in Claude Desktop after configuration
Check that the depyler binary path is accessible from the shell Claude uses. Set RUST_LOG=debug and restart Claude Desktop to see startup errors in the logs.
Frequently Asked Questions about Depyler
What is Depyler?
Depyler is a Model Context Protocol (MCP) server that compiles python to rust, helping transition off of python to energy efficient and safe rust code It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Depyler?
Follow the installation instructions on the Depyler GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Depyler?
Depyler works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Depyler free to use?
Yes, Depyler is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
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Set Up Depyler in Your Editor
Choose your AI client for step-by-step setup instructions.
Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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