Add AST Metrics - #1860
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Hi! Thanks for maintaining this list, it has been a genuinely useful reference for me over the years.
This adds AST Metrics, a multi-language code maintainability analyzer.
It is not a linter in the correctness sense: instead of reporting rule violations, it computes maintainability metrics that most linters do not cover (cyclomatic and cognitive complexity, Halstead volume, afferent/efferent coupling, maintainability index) and detects communities in the dependency graph. Output formats: explorable HTML report, plus JSON, Markdown, SARIF and OpenMetrics for CI.
It ships as a single Go binary with no runtime dependency, so analyzing PHP or Python does not require a PHP or Python installation (parsing is done with tree-sitter). It also embeds an MCP server, so AI coding agents can query codebase structure and risk areas.
Languages supported today: Go, PHP, Python, Rust, Java, C#, TypeScript.
Disclosure: I am the author. I also wrote PhpMetrics, already listed here; AST Metrics is its multi-language successor, and PhpMetrics remains maintained.
Contributing criteria:
Only
data/tools/ast-metrics.ymlis added.README.mdanddata/api/are untouched. I ranmake render-skip-deprecatedlocally to validate: it renders without error and the entry lands in the "Multiple languages" section.Happy to adjust the wording, the tags or the category if you would rather have it described differently. Thanks for taking a look!