Krit

Go-first static analysis for Kotlin, Java, and Android. Krit uses tree-sitter for fast source analysis and can call JVM-backed Kotlin Analysis API/FIR helper tools for type-aware checks when a project needs them.

curl -fsSL https://raw.githubusercontent.com/kaeawc/krit/main/install.sh | sh
krit .

That's it. Run it in any Kotlin, Java, or Android project and get findings in seconds.

What it does

• Broad rule coverage — detekt-compatible, Android Lint-compatible, plus extras for resources, icons, and Gradle
• Auto-fixes at three safety levels — cosmetic, idiomatic, semantic
• SARIF / JSON / Checkstyle / plain output
• LSP + MCP servers — editor diagnostics and AI agent integration
• Cross-file dead code via bloom-filtered indexing across Kotlin, Java, and XML
• Optional JVM analysis through krit-types/KAA and FIR helper processes for checks that need compiler-grade facts

Install

# Recommended (macOS / Linux): verifies SHA256 and installs to ~/.local/bin
curl -fsSL https://raw.githubusercontent.com/kaeawc/krit/main/install.sh | sh

# Homebrew (macOS / Linux)
brew install --cask kaeawc/tap/krit

# Scoop (Windows)
scoop bucket add krit https://github.com/kaeawc/scoop-krit
scoop install krit

# Go (any platform; needs Go 1.25+ and a C compiler)
go install github.com/kaeawc/krit/cmd/krit@latest

See docs/install.md for the full set of install options and companion tools (krit-lsp, krit-mcp, krit-types, and krit-fir).

First run

krit --init     # write starter krit.yml
krit .          # analyze current directory
krit --fix .    # apply safe fixes

Docs

• Install — install options and companion binaries
• Quickstart — common commands and workflows
• Configuration — krit.yml, thresholds, baselines
• Rules — rules by category
• Integrations — IDE, CI hooks
• MCP setup — wiring krit-mcp into Claude Code, Claude Desktop, Codex

Contributing

git clone https://github.com/kaeawc/krit.git && cd krit
go build -o krit ./cmd/krit/
go test ./... -count=1

Rules live in internal/rules/. Fixtures live in tests/fixtures/. New rules embed the appropriate rule base and register v2 metadata. See CONTRIBUTING.md.

License

See LICENSE.