Qlty Code Quality

Universal code quality tool supporting 70+ linters for 40+ languages via qlty CLI.

When to Use Check code for linting issues before commit/handoff Auto-fix formatting and style issues Calculate code metrics (complexity, duplication) Find code smells Quick Reference

Check changed files with auto-fix

uv run python -m runtime.harness scripts/qlty_check.py --fix

Check all files

uv run python -m runtime.harness scripts/qlty_check.py --all

Format files

uv run python -m runtime.harness scripts/qlty_check.py --fmt

Get metrics

uv run python -m runtime.harness scripts/qlty_check.py --metrics

Find code smells

uv run python -m runtime.harness scripts/qlty_check.py --smells

Parameters Parameter Description --check Run linters (default) --fix Auto-fix issues --all Process all files, not just changed --fmt Format files instead --metrics Calculate code metrics --smells Find code smells --paths Specific files/directories --level Min issue level: note/low/medium/high --cwd Working directory --init Initialize qlty in a repo --plugins List available plugins Common Workflows After Implementation

Auto-fix what's possible, see what remains

uv run python -m runtime.harness scripts/qlty_check.py --fix

Quality Report

Get metrics for changed code

uv run python -m runtime.harness scripts/qlty_check.py --metrics

Find complexity hotspots

uv run python -m runtime.harness scripts/qlty_check.py --smells

Initialize in New Repo uv run python -m runtime.harness scripts/qlty_check.py --init --cwd /path/to/repo

Direct CLI (if qlty installed)

Check changed files

qlty check

Auto-fix

qlty check --fix

JSON output

qlty check --json

Format

qlty fmt

Requirements qlty CLI: https://github.com/qltysh/qlty MCP server: servers/qlty/server.py wraps CLI Config: .qlty/qlty.toml in repo (run qlty init first) vs Other Tools Tool Use Case qlty Unified linting, formatting, metrics for any language ast-grep Structural code patterns and refactoring morph Fast text search