mete

Structural metrics engine for code quality analysis

MCP Server | CLI Usage | Metrics | Installation

What is mete?

mete analyzes your codebase and reports structural quality metrics:

• Maintainability Index (MI) - Overall code health score (0-100)
• Cyclomatic Complexity (CC) - Number of independent paths through code
• Cognitive Complexity - How hard code is to understand
• Nesting Depth - Maximum control structure depth
• Code Duplication - Repeated code blocks across files
• Structural Entropy - Complexity distribution via Shannon entropy

Supports: Rust, TypeScript, JavaScript, Python, Go, Java, C#, C++, Elixir

Install as MCP Server

mete works as an MCP (Model Context Protocol) server, giving AI assistants direct access to code quality analysis.

Claude Code

claude mcp add mete -- mete mcp

Cursor

Or manually add to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "mete": {
      "command": "mete",
      "args": ["mcp"]
    }
  }
}

VS Code

Add to your VS Code MCP settings:

{
  "mcp": {
    "servers": {
      "mete": {
        "command": "mete",
        "args": ["mcp"]
      }
    }
  }
}

OpenCode

Add to ~/.config/opencode/config.json:

{
  "mcp": {
    "mete": {
      "command": "mete",
      "args": ["mcp"]
    }
  }
}

MCP Tools Available

Installation

From crates.io (Rust)

cargo install mete --features mcp

From npm (Node.js)

npm install -g @dutch.casa/mete-rs

From source

git clone https://github.com/dutch-casa/mete.rs
cd mete.rs
cargo install --path . --features mcp

CLI Usage

Analyze a file or directory

mete analyze src/
mete analyze src/main.rs

Find refactoring targets (AI-friendly)

mete targets src/ --limit 10

Function-level metrics

mete functions src/ --complex    # Show only complex functions
mete functions src/ --large      # Show only large functions (>50 LOC)
mete functions src/ --deep       # Show only deeply nested functions

Find duplicate code

mete duplicates src/
mete duplicates src/ --cross-file --threshold 0.8

Measure structural entropy

mete entropy src/

Explain metrics

mete explain mi
mete explain cc
mete explain depth

Metrics

Maintainability Index (MI)

Measures code maintainability on a scale of 0-100. Higher is better.

Cyclomatic Complexity (CC)

Number of linearly independent paths through code. Lower is better.

Nesting Depth

Maximum depth of nested control structures. Lower is better.

Star History

License

MIT