The Zig MCP Server provides a language-focused assistant for Zig, with dedicated tools for building and analyzing Zig projects. It includes capabilities to generate modern Zig build.zig files, analyze existing build configurations for modernization, and manage dependencies with a Zig-friendly build system. In addition to build tooling, there are tools for code optimization, compute-unit estimation, code generation from natural language prompts, and code improvement recommendations. This combination allows you to bootstrap Zig projects, keep builds up-to-date with Zig 0.15.2+ patterns, and receive actionable guidance on performance and safety improvements. To use it, run the server via MCP integration and invoke the available tools (generate_build_zig, analyze_build_zig, generate_build_zon, optimize_code, estimate_compute_units, generate_code, get_recommendations) through your MCP client or orchestration layer. Each tool provides structured inputs such as code samples, prompts, and context to tailor results to Zig patterns and the current build system.

Prerequisites:

• Node.js and npm installed on your machine
• Access to the MCP environment where you will register the server

Manual installation steps:

1. Clone the repository (or download the package): git clone <repository-url> cd zig-mcp-server

2. Install dependencies: npm install

3. Build the server: npm run build

4. Configure environment variables (example):

   Create a GitHub token for better API rate limits

   Required scope: public_repo

   GITHUB_TOKEN=your_token_here

5. Add to MCP settings (example JSON): { "mcpServers": { "zig": { "command": "node", "args": ["/path/to/zig-mcp-server/build/index.js"], "env": { "GITHUB_TOKEN": "your_token_here", "NODE_OPTIONS": "--experimental-vm-modules" }, "restart": true } } }

6. Start the MCP workflow or register the server in your MCP gateway as required by your environment.

Tips and notes:

• Ensure Node.js is updated to support modern ECMAScript modules, as the server uses the experimental VM modules flag in Node options.
• If you encounter API rate limits when accessing GitHub data, ensure GITHUB_TOKEN is set with public_repo scope.
• When upgrading Zig (0.15.2+), re-run the analyze_build_zig and generate_build_zig tools to bring legacy build patterns in line with the latest Zig module system.
• Use generate_build_zon to manage dependencies more effectively with the modern Zig package catalog.
• For best results, keep the MCP server environment isolated per project to avoid cross-project module conflicts.
• If you see build cache or path resolution issues, verify that /path/to/zig-mcp-server/build/index.js points to the actual built entry point.