zig-mcp

Overview

Zig Docs MCP is a well-implemented Model Context Protocol server that provides access to Zig programming language documentation. It reads STD lib source files through a WASM module and outputs Markdown to reduce token usage. The server supports both local mode (using locally installed Zig compiler) and remote mode (fetching from ziglang.org), ensuring users always get documentation matching their actual Zig version. The implementation follows Zig's official autodoc approach while optimizing for AI consumption.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• list_builtin_functions

  Lists all available Zig builtin functions

  Try:Show me all available builtin functionsTry:List all Zig builtin functions starting with @
• get_builtin_function

  Get detailed documentation for Zig builtin functions by name

  Try:Get documentation for @TypeInfoTry:Show me details about the @import builtin function
• search_std_lib

  Search Zig standard library for declarations by name

  Try:Search for ArrayList in the standard libraryTry:Find all math-related functions in std
• get_std_lib_item

  Get detailed documentation for a specific standard library item

  Try:Show documentation for std.mem.AllocatorTry:Get details on std.process

Comparable tools

Installation

claude mcp add zig-docs -- npx -y zig-mcp@latest

claude mcp add zig-docs -- bunx zig-mcp@latest

{
  "mcpServers": {
    "zig-docs": {
      "command": "npx",
      "args": ["-y", "zig-mcp@latest"]
    }
  }
}

{
  "mcpServers": {
    "zig-docs": {
      "command": "npx",
      "args": ["-y", "zig-mcp@latest", "--doc-source", "remote", "--version", "master"]
    }
  }
}

FAQ

What documentation sources does zig-mcp support?

Zig-mcp supports both local mode (using your locally installed Zig compiler via 'zig std') and remote mode (fetching documentation from ziglang.org).

Can I specify which version of Zig documentation to use?

Yes, you can specify exact versions like 0.14.1 or use 'master' for the latest development version when using remote mode.

On Hacker News

Recent discussion from the developer community.

• Show HN: MCP server for up-to-date Zig standard library documentation▲ 27💬 9
  Story by afirium · 2025-07-21

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