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copyleftdev

Systems-level software engineer building security tools, developer infrastructure, and AI-native systems in Rust, Go, and Zig. 560+ open source repositories.

Installation
Run this command in your terminal to add the MCP server to Claude Code.
Run in terminal:
Command
claude mcp add --transport stdio copyleftdev-copyleftdev cargo build --release \
  --env RUST_LOG="info"

How to use

Copyleftdev's MCP server is presented as part of the author’s toolkit for AI-native, protocol-driven systems. The server implements the Model Context Protocol (MCP) concepts to enable composable AI components, model context exchange, and policy-driven behavior within a single-binary or modular runtime. In practice, you can deploy it to host small, observable tools that interoperate via MCP endpoints, allowing you to chain scanners, DSL evaluators, or AI-enabled utilities with minimal runtime dependencies. Use the provided MCP endpoints to register services, publish capabilities, and compose them into pipelines that can be tested locally or deployed in a small cluster. The tools focus on small, auditable binaries, so expect straightforward observability, predictable resource usage, and clear, single-purpose responsibilities as you wire tools together through MCP messages and streams.

How to install

Prerequisites:

  • A supported development environment (Rust toolchain for Rust-based builds, or Go environment if the project ships a Go variant).
  • Basic Git and shell access.

Step 1: Install prerequisites

  • Install Rust (if building a Rust-based MCP server): curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh source $HOME/.cargo/env

Step 2: Acquire the code

Step 3: Build

  • Build the project in release mode (Rust): cargo build --release

Step 4: Run

  • Start the MCP server (adjust path if the binary name differs): ./target/release/copyleftdev-mcp-server

Optional: Provide a configuration file and environment variables as needed by the server (example placeholders below). If a config.yaml is used, start with: ./target/release/copyleftdev-mcp-server --config config.yaml

Prerequisites (alternative): If this project is configured to run via a Python/uv (uvx) or Docker workflow, install the corresponding runtime and follow its specific run commands as indicated in the project documentation.

Additional notes

Notes and tips:

  • The server emphasizes small, observable, single-purpose tools. When wiring MCP components, prefer light-weight, auditable modules that expose clear MCP endpoints.
  • If you encounter networking or endpoint discovery issues, ensure MCP service registration is enabled and that any firewall rules permit MCP channel traffic.
  • Set RUST_LOG or equivalent logging env vars to get actionable diagnostics during development and troubleshooting.
  • Verify compatibility of MCP payloads between components by keeping to the documented MCP version and schema in your environment.
  • If the project provides multiple runtime entrypoints (Rust, Go, Zig, etc.), choose the implementation that matches your deployment environment to minimize runtime dependencies.

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